IBM's Super Battery

B

Bret Cahill

Guest
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill
 
"Bret Cahill" <BretCahill@aol.com> wrote in message
news:9684b1cd-dbe5-4784-8034-df8d496f5806@b9g2000yqm.googlegroups.com...
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill
Please cite a URL or information source for this.
What does "mechanical energy" mean when talking about a battery or a fuel?
 
In sci.physics Bret Cahill <BretCahill@aol.com> wrote:
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill
No, they didn't.

They announced they are starting a research project to TRY to develop
a whiz-bang battery.


--
Jim Pennino

Remove .spam.sux to reply.
 
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:
"Bret Cahill" <BretCahill@aol.com> wrote in message
news:9684b1cd-dbe5-4784-8034-df8d496f5806@b9g2000yqm.googlegroups.com...
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill


Please cite a URL or information source for this.
What does "mechanical energy" mean when talking about a battery or a fuel?
What they are actually doing is working on a proposal to get funding
from DOE to start research into the possibility of developing a
whiz-bang battery.

http://beta.technologyreview.com/energy/22780/



--
Jim Pennino

Remove .spam.sux to reply.
 
<jimp@specsol.spam.sux.com> wrote in message
news:ns4dg6-45f.ln1@mail.specsol.com...
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:

"Bret Cahill" <BretCahill@aol.com> wrote in message
news:9684b1cd-dbe5-4784-8034-df8d496f5806@b9g2000yqm.googlegroups.com...
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill


Please cite a URL or information source for this.
What does "mechanical energy" mean when talking about a battery or a
fuel?

What they are actually doing is working on a proposal to get funding
from DOE to start research into the possibility of developing a
whiz-bang battery.

http://beta.technologyreview.com/energy/22780/



--
Jim Pennino

Remove .spam.sux to reply.
Thanks. It looks like a form of this lithium-air battery already exists so
the IBM-MIT effort is not starting at square one. If developed, it may
change everything, but has to be reasonably priced and safe. That's a tall
order but seems promising.
 
On Jun 13, 10:39 am, Bret Cahill <BretCah...@aol.com> wrote:
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?
Nobody knows. That's why when people say battery, the
people with brains work on GPS, Digital Terrain Mapping, Atomic
Clock Wristwatches,
Pv Cells, Self-Replicating Machines, C++, Microprocessors, Optical
Computers,
Digital Fiber Optics, Laser Disk Libraries, Distrbuted Processing,
Cell Phones,
Holographics, Laser-Guided Phasors, All-In-One Printers, SGML,
XML, Flat Sceen Debuggers,
On-Line Publishing, USB, HDTV, mp3, mpeg, Blue Ray, Self-Assembling
Robots,
Compact Flourescent Lighting, Light Sticks, UAVs, AAVs, Thermo-
Electric Cooling,
Biodiesel, and post IBM syncopation instead.




Bret Cahill
 
Bret Cahill wrote:
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.
[snip crap]

Since this is a physical impossiblity, bullshit.

Density of energy generation/mass
----------------------------------
13) matter antimatter annihilation
12) nuclear fusion
11) nuclear fission
10) Radioisotope thermoelectric generator
9) Diesel internal combustion
8) kerosene internal combustion
7) gasoline internal combustion
6) lithium hydride battery
5) nickel metal hydride battery
4) lead acid battery
3) flywheel
2) capacitance
1) inductance

credulous idiot

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2
 
Ref: http://technologyreview.com/energy/22780/

IBM Research is beginning an ambitious project that it hopes will lead to the
commercialization of batteries that store 10 times as much energy as today's within the
next five years. The company will partner with U.S. national labs to develop a promising
but controversial technology that uses energy-dense but highly flammable lithium metal to
react with oxygen in the air. The payoff, says the company, will be a lightweight,
powerful, and rechargeable battery for the electrical grid and the electrification of
transportation.

Lithium metal-air batteries can store a tremendous amount of energy--in theory, more than
5,000 watt-hours per kilogram. That's more than ten-times as much as today's
high-performance lithium-ion batteries, and more than another class of energy-storage
devices: fuel cells. Instead of containing a second reactant inside the cell, these
batteries react with oxygen in the air that's pulled in as needed, making them lightweight
and compact.

IBM is pursuing the risky technology instead of lithium-ion batteries because it has the
potential to reach high enough energy densities to change the transportation system, says
Chandrasekhar Narayan, manager of science and technology at IBM's Almaden Research Center,
in San Jose, CA. "With all foreseeable developments, lithium-ion batteries are only going
to get about two times better than they are today," he says. "To really make an impact on
transportation and on the grid, you need higher energy density than that." One of the
project's goals, says Narayan, is a lightweight 500-mile battery for a family car. The
Chevy Volt can go 40 miles before using the gas tank, and Tesla Motors' Model S line can
travel up to 300 miles without a recharge.

One of the main challenges in making lithium metal-air batteries is that "air isn't just
oxygen," says Jeff Dahn, a professor of materials science at Dalhousie University, in Nova
Scotia. Where there's air there's moisture, and "humidity is the death of lithium," says
Dahn. When lithium metal meets water, an explosive reaction ensues. These batteries will
require protective membranes that exclude water but let in oxygen, and are stable over time.

IBM does not currently have battery research programs in place. However, Narayan says that
IBM has the expertise needed to tackle the science problems. In addition to Oak Ridge, IBM
will partner with Lawrence Berkeley, Lawrence Livermore, Argonne, and Pacific Northwest
national labs. The company and its collaborators are currently working on a proposal for
funding from the U.S. Department of Energy under the Advanced Research Projects Agency-Energy.

Research on lithium-metal batteries stalled about 20 years ago. In 1989, Canadian company
Moli Energy recalled its rechargeable lithium-metal batteries, which used not air but a
more traditional cathode, after one caught fire; the incident led to legal action, and the
company declared bankruptcy. Soon after, Sony brought to market the first rechargeable
lithium-ion batteries, which were safer, and research on lithium-metal electrodes slowed
nearly to a halt. (After restructuring, Moli Energy refocused its research efforts and is
now selling lithium-ion batteries under the name Molicel.) Only a handful of labs around
the world, including those at PolyPlus Battery, in Berkeley, CA, Japan's AIST, and St.
Andrews University, in Scotland, are currently working on lithium-air batteries.

Safety problems with lithium-metal batteries can arise when they're recharged. "When you
charge and discharge, you have to electroplate and strip the metal over and over again,"
says Dahn, who is not a contributor to the IBM project. Over time, just as in a
lithium-ion battery, the lithium-metal surface becomes rough, which can lead to thermal
runaway, when the battery literally burns until all the reactants inside are used up. But
Narayan says that lithium-air batteries are inherently safer than previously developed
lithium-metal batteries as well as today's lithium-ion batteries because only one of the
reactants is contained in the cell. "A lithium-air cell needs air from outside," says
Narayan. "You will never get a runaway reaction because air is limited."

PolyPlus Battery has been working on lithium metal-air technology for about six years and
has some dramatic evidence of the technology's viability: floating among clownfish in an
aquarium tank at the company's headquarters, a lithium-metal battery pulls in oxygen from
the salt water to power a green LED. The company has also developed a prototype battery
that pulls oxygen from ambient air. But Steven Visco, founder and vice president of
research at the company, says that lithium metal-air batteries are "still a young
technology that's not ready to be commercialized."

IBM's Narayan points to two remaining major problems with lithium metal-air technology.
First, the design of the cathode needs to be optimized so that the lithium oxide that
forms when oxygen is pulled inside the battery won't block the oxygen intake channels.
Second, better catalysts are needed to drive the reverse reaction that recharges the battery.

Narayan says that it won't be clear how much money and how much time the project will take
until about a year and half from now, after research has begun. He estimates that the
company will devote about five years to the project. IBM will probably not make the
batteries but will license the technology to manufacturers.
 
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:
jimp@specsol.spam.sux.com> wrote in message
news:ns4dg6-45f.ln1@mail.specsol.com...
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:

"Bret Cahill" <BretCahill@aol.com> wrote in message
news:9684b1cd-dbe5-4784-8034-df8d496f5806@b9g2000yqm.googlegroups.com...
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill


Please cite a URL or information source for this.
What does "mechanical energy" mean when talking about a battery or a
fuel?

What they are actually doing is working on a proposal to get funding
from DOE to start research into the possibility of developing a
whiz-bang battery.

http://beta.technologyreview.com/energy/22780/



--
Jim Pennino

Remove .spam.sux to reply.

Thanks. It looks like a form of this lithium-air battery already exists so
the IBM-MIT effort is not starting at square one. If developed, it may
change everything, but has to be reasonably priced and safe. That's a tall
order but seems promising.
Yeah, well there still is the inconvienient reality that there isn't
that much recoverable lithium on the planet.

That which does exist is mostly in South America and China, so the net
effect of making all cars electric would be to swap foreign oil imports
for foreign lithium imports until it runs out.

There is no such thing as bio-lithium.


--
Jim Pennino

Remove .spam.sux to reply.
 
On Sat, 13 Jun 2009 14:17:26 -0700, Uncle Al wrote:

Bret Cahill wrote:

IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.
[snip crap]

Since this is a physical impossiblity, bullshit.

Density of energy generation/mass
----------------------------------
13) matter antimatter annihilation
12) nuclear fusion
11) nuclear fission
10) Radioisotope thermoelectric generator
9) Diesel internal combustion
8) kerosene internal combustion
7) gasoline internal combustion
6) lithium hydride battery
5) nickel metal hydride battery
4) lead acid battery
3) flywheel
2) capacitance
1) inductance

credulous idiot
It's Li-air, UA. Wouldn't that theoretically be be up around 9.5 or so?
 
On Jun 13, 5:17 pm, Uncle Al <Uncle...@hate.spam.net> wrote:
Bret Cahill wrote:

IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

[snip crap]

Since this is a physical impossiblity, bullshit.

Density of energy generation/mass
----------------------------------
13) matter antimatter annihilation
12) nuclear fusion
11) nuclear fission
10) Radioisotope thermoelectric generator
 9) Diesel internal combustion
 8) kerosene internal combustion
 7) gasoline internal combustion
 6) lithium hydride battery
 5) nickel metal hydride battery
 4) lead acid battery
 3) flywheel
 2) capacitance
 1) inductance

credulous idiot

--
Uncle Alhttp://www.mazepath.com/uncleal/
 (Toxic URL! Unsafe for children and most mammals)http://www.mazepath.com/uncleal/lajos.htm#a2

Nice list, you might add TNT at 9.5, Then there is air pressure
storage not sure where it fits(do you count the pressure vessel as
part of the mass?), and gravity storage. (I'm thinking of pumped
water reservoirs. ) down at 0.5.

George H.
 
On Sat, 13 Jun 2009 19:08:14 -0700, George Herold wrote:

On Jun 13, 5:17 pm, Uncle Al <Uncle...@hate.spam.net> wrote:
Bret Cahill wrote:

IBM and MIT announced a battery with a 40% more mechanical energy
than liquid fuel: 5 kW-hr/kg.

[snip crap]

Since this is a physical impossiblity, bullshit.

Density of energy generation/mass
----------------------------------
13) matter antimatter annihilation
12) nuclear fusion
11) nuclear fission
10) Radioisotope thermoelectric generator
 9) Diesel internal combustion
 8) kerosene internal combustion
 7) gasoline internal combustion
 6) lithium hydride battery
 5) nickel metal hydride battery
 4) lead acid battery
 3) flywheel
 2) capacitance
 1) inductance

credulous idiot

--
Uncle Alhttp://www.mazepath.com/uncleal/
 (Toxic URL! Unsafe for children and most
 mammals)http://www.mazepath.com/uncleal/lajos.htm#a2


Nice list, you might add TNT at 9.5,
I think TNT would be lower than air breathers, because it has to bring
its own oxygen to the party. Maybe a 5.5?

Then there is air pressure storage
not sure where it fits(do you count the pressure vessel as part of the
mass?), and gravity storage. (I'm thinking of pumped water reservoirs.
) down at 0.5.
 
On Sat, 13 Jun 2009 19:08:14 -0700, George Herold wrote:

Nice list, you might add TNT at 9.5,
TNT's energy density of 4.2MJ/kg is less than a tenth of that of petrol,
diesel or kerosene (all around 45MJ/kg).
 
<jimp@specsol.spam.sux.com> wrote in message
news:anmdg6-deo.ln1@mail.specsol.com...
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:

jimp@specsol.spam.sux.com> wrote in message
news:ns4dg6-45f.ln1@mail.specsol.com...
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:

"Bret Cahill" <BretCahill@aol.com> wrote in message
news:9684b1cd-dbe5-4784-8034-df8d496f5806@b9g2000yqm.googlegroups.com...
IBM and MIT announced a battery with a 40% more mechanical energy
than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill


Please cite a URL or information source for this.
What does "mechanical energy" mean when talking about a battery or a
fuel?

What they are actually doing is working on a proposal to get funding
from DOE to start research into the possibility of developing a
whiz-bang battery.

http://beta.technologyreview.com/energy/22780/



--
Jim Pennino

Remove .spam.sux to reply.

Thanks. It looks like a form of this lithium-air battery already exists
so
the IBM-MIT effort is not starting at square one. If developed, it may
change everything, but has to be reasonably priced and safe. That's a
tall
order but seems promising.

Yeah, well there still is the inconvienient reality that there isn't
that much recoverable lithium on the planet.

That which does exist is mostly in South America and China, so the net
effect of making all cars electric would be to swap foreign oil imports
for foreign lithium imports until it runs out.

There is no such thing as bio-lithium.
Very true.
Maybe we should look at Sodium as substitute for Lithium.
Sodium-air electropotental is just slightly less energy dense, but Sodium is
a lot more abundant.

Rob

--
Jim Pennino

Remove .spam.sux to reply.
 
"Uncle Al" <UncleAl0@hate.spam.net> wrote in message
news:4A341766.9D924F85@hate.spam.net...
Bret Cahill wrote:

IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.
[snip crap]

Since this is a physical impossiblity, bullshit.
What makes you think this is a physical impossibility ?
The 5kWh/kg is real (at least theoretical) for the Lithium-air
electrochemical reaction.

Rob

Density of energy generation/mass
----------------------------------
13) matter antimatter annihilation
12) nuclear fusion
11) nuclear fission
10) Radioisotope thermoelectric generator
9) Diesel internal combustion
8) kerosene internal combustion
7) gasoline internal combustion
6) lithium hydride battery
5) nickel metal hydride battery
4) lead acid battery
3) flywheel
2) capacitance
1) inductance

credulous idiot

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2
 
On Sat, 13 Jun 2009 22:45:03 GMT, jimp@specsol.spam.sux.com wrote:

In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:

jimp@specsol.spam.sux.com> wrote in message
news:ns4dg6-45f.ln1@mail.specsol.com...
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:

"Bret Cahill" <BretCahill@aol.com> wrote in message
news:9684b1cd-dbe5-4784-8034-df8d496f5806@b9g2000yqm.googlegroups.com...
IBM and MIT announced a battery with a 40% more mechanical energy than
liquid fuel: 5 kW-hr/kg.

Is the spent battery material reprocessed or is the battery simply
recharged?

What is the projected price?


Bret Cahill


Please cite a URL or information source for this.
What does "mechanical energy" mean when talking about a battery or a
fuel?

What they are actually doing is working on a proposal to get funding
from DOE to start research into the possibility of developing a
whiz-bang battery.

http://beta.technologyreview.com/energy/22780/



--
Jim Pennino

Remove .spam.sux to reply.

Thanks. It looks like a form of this lithium-air battery already exists so
the IBM-MIT effort is not starting at square one. If developed, it may
change everything, but has to be reasonably priced and safe. That's a tall
order but seems promising.

Yeah, well there still is the inconvienient reality that there isn't
that much recoverable lithium on the planet.

That which does exist is mostly in South America and China, so the net
effect of making all cars electric would be to swap foreign oil imports
for foreign lithium imports until it runs out.

There is no such thing as bio-lithium.
http://www.evworld.com/article.cfm?storyid=1434
"Lithium in Abundance"

"Open Access Article Originally Published: April 15, 2008"

"As to the issue of American lithium resources, Evans pointed out that
a single geothermal well in southern California can produce enough
lithium to meet all of the world's current demand for lithium."

":He estimates it at 28.4 million tonnes of lithium, which is
equivalent to 150 million tonnes of lithium carbonate. Current world
demand is 16,000 tonnes."

@5kWh per kg of battery weight. One needs less than 10 kg of lithium
per EV, which can easily be recycled when the vehicle is junked.

1000 / 10 * 2.84e+7 tonns == 2.84 billion EVs.
 
"T. Keating" <tkusenet@ktcnslt.com> ha scritto nel messaggio
news:0sr935lia632n11takn2qlgbhrqjmmkh8a@4ax.com...
http://www.evworld.com/article.cfm?storyid=1434
"Lithium in Abundance"

"Open Access Article Originally Published: April 15, 2008"

"As to the issue of American lithium resources, Evans pointed out that
a single geothermal well in southern California can produce enough
lithium to meet all of the world's current demand for lithium."

":He estimates it at 28.4 million tonnes of lithium, which is
equivalent to 150 million tonnes of lithium carbonate. Current world
demand is 16,000 tonnes."

I believe it, unfortunately no lithium EV sold, today! That 16,000 tonns of
demand is totally useless...

@5kWh per kg of battery weight. One needs less than 10 kg of lithium
per EV, which can easily be recycled when the vehicle is junked.

1000 / 10 * 2.84e+7 tonns == 2.84 billion EVs

5 kWh per kg of battery is not a credible number for the state of the art of
tecnology, we are still in the range of 0,1-0,2 kWh per kg at max. But I'd
tend to agree with you anyway, it takes about 50 grams of lithium per kg of
battery, so there is enough litium in the earth to build billions of
electric and plugin vehicles like GM's Volt (16 kWh for about 60 km of
range)
 
<jimp@specsol.spam.sux.com> ha scritto nel messaggio
news:anmdg6-deo.ln1@mail.specsol.com...
In sci.physics Bob Eld <nsmontassoc@yahoo.com> wrote:
Yeah, well there still is the inconvienient reality that there isn't
that much recoverable lithium on the planet.

That which does exist is mostly in South America and China, so the net
effect of making all cars electric would be to swap foreign oil imports
for foreign lithium imports until it runs out.

There is no such thing as bio-lithium.
Oil is not a renewable fuel, while lithium is a reusable-recyclable
material, it's not a fair comparison (besides the fact that very likely we
have enough lithium to build even billions electric vehicles wortdwide)
 
"Sam Wormley" <swormley1@mchsi.com> ha scritto nel messaggio
news:UQVYl.143947$DP1.26376@attbi_s22...
Ref: http://technologyreview.com/energy/22780/

IBM Research is beginning an ambitious project that it hopes will lead to
the commercialization of batteries that store 10 times as much energy as
today's within the next five years. The company will partner with U.S.
national labs to develop a promising but controversial technology that
uses energy-dense but highly flammable lithium metal to react with oxygen
in the air. The payoff, says the company, will be a lightweight, powerful,
and rechargeable battery for the electrical grid and the electrification
of transportation.

Lithium metal-air batteries can store a tremendous amount of energy--in
theory, more than 5,000 watt-hours per kilogram. That's more than
ten-times as much as today's high-performance lithium-ion batteries, and
more than another class of energy-storage devices: fuel cells. Instead of
containing a second reactant inside the cell, these batteries react with
oxygen in the air that's pulled in as needed, making them lightweight and
compact.

IBM is pursuing the risky technology instead of lithium-ion batteries
because it has the potential to reach high enough energy densities to
change the transportation system, says Chandrasekhar Narayan, manager of
science and technology at IBM's Almaden Research Center, in San Jose, CA.
"With all foreseeable developments, lithium-ion batteries are only going
to get about two times better than they are today," he says. "To really
make an impact on transportation and on the grid, you need higher energy
density than that." One of the project's goals, says Narayan, is a
lightweight 500-mile battery for a family car. The Chevy Volt can go 40
miles before using the gas tank, and Tesla Motors' Model S line can travel
up to 300 miles without a recharge.

One of the main challenges in making lithium metal-air batteries is that
"air isn't just oxygen," says Jeff Dahn, a professor of materials science
at Dalhousie University, in Nova Scotia. Where there's air there's
moisture, and "humidity is the death of lithium," says Dahn. When lithium
metal meets water, an explosive reaction ensues. These batteries will
require protective membranes that exclude water but let in oxygen, and are
stable over time.

IBM does not currently have battery research programs in place. However,
Narayan says that IBM has the expertise needed to tackle the science
problems. In addition to Oak Ridge, IBM will partner with Lawrence
Berkeley, Lawrence Livermore, Argonne, and Pacific Northwest national
labs. The company and its collaborators are currently working on a
proposal for funding from the U.S. Department of Energy under the Advanced
Research Projects Agency-Energy.

Research on lithium-metal batteries stalled about 20 years ago. In 1989,
Canadian company Moli Energy recalled its rechargeable lithium-metal
batteries, which used not air but a more traditional cathode, after one
caught fire; the incident led to legal action, and the company declared
bankruptcy. Soon after, Sony brought to market the first rechargeable
lithium-ion batteries, which were safer, and research on lithium-metal
electrodes slowed nearly to a halt. (After restructuring, Moli Energy
refocused its research efforts and is now selling lithium-ion batteries
under the name Molicel.) Only a handful of labs around the world,
including those at PolyPlus Battery, in Berkeley, CA, Japan's AIST, and
St. Andrews University, in Scotland, are currently working on lithium-air
batteries.

Safety problems with lithium-metal batteries can arise when they're
recharged. "When you charge and discharge, you have to electroplate and
strip the metal over and over again," says Dahn, who is not a contributor
to the IBM project. Over time, just as in a lithium-ion battery, the
lithium-metal surface becomes rough, which can lead to thermal runaway,
when the battery literally burns until all the reactants inside are used
up. But Narayan says that lithium-air batteries are inherently safer than
previously developed lithium-metal batteries as well as today's
lithium-ion batteries because only one of the reactants is contained in
the cell. "A lithium-air cell needs air from outside," says Narayan. "You
will never get a runaway reaction because air is limited."

PolyPlus Battery has been working on lithium metal-air technology for
about six years and has some dramatic evidence of the technology's
viability: floating among clownfish in an aquarium tank at the company's
headquarters, a lithium-metal battery pulls in oxygen from the salt water
to power a green LED. The company has also developed a prototype battery
that pulls oxygen from ambient air. But Steven Visco, founder and vice
president of research at the company, says that lithium metal-air
batteries are "still a young technology that's not ready to be
commercialized."

IBM's Narayan points to two remaining major problems with lithium
metal-air technology. First, the design of the cathode needs to be
optimized so that the lithium oxide that forms when oxygen is pulled
inside the battery won't block the oxygen intake channels. Second, better
catalysts are needed to drive the reverse reaction that recharges the
battery.

Narayan says that it won't be clear how much money and how much time the
project will take until about a year and half from now, after research has
begun. He estimates that the company will devote about five years to the
project. IBM will probably not make the batteries but will license the
technology to manufacturers.
Intersting, even if I doubt that 5 kWh/kg is an easy easy target to achieve
 
"Romeo Gigli" <rgigli @ (no-spam) libero.it> ha scritto nel messaggio
news:Sv7Zl.45186$Ux.38325@tornado.fastwebnet.it...
"T. Keating" <tkusenet@ktcnslt.com> ha scritto nel messaggio
news:0sr935lia632n11takn2qlgbhrqjmmkh8a@4ax.com...
http://www.evworld.com/article.cfm?storyid=1434
"Lithium in Abundance"

"Open Access Article Originally Published: April 15, 2008"

"As to the issue of American lithium resources, Evans pointed out that
a single geothermal well in southern California can produce enough
lithium to meet all of the world's current demand for lithium."

":He estimates it at 28.4 million tonnes of lithium, which is
equivalent to 150 million tonnes of lithium carbonate. Current world
demand is 16,000 tonnes."


I believe it, unfortunately no lithium EV sold, today! That 16,000 tonns
of demand is totally useless...

@5kWh per kg of battery weight. One needs less than 10 kg of lithium
per EV, which can easily be recycled when the vehicle is junked.

1000 / 10 * 2.84e+7 tonns == 2.84 billion EVs


5 kWh per kg of battery is not a credible number for the state of the art
of tecnology, we are still in the range of 0,1-0,2 kWh per kg at max. But
I'd tend to agree with you anyway, it takes about 50 grams of lithium per
kg of battery, so there is enough litium in the earth to build billions of
electric and plugin vehicles like GM's Volt (16 kWh for about 60 km of
range)
moreover, lithium is quite easily reuseable/recyclable as a raw material
(unlike petrol and fossil fuels)
 

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