Those of you who
are faithful followers of this blog (all 7 of you) should know that I come from
the school of thought that you always need a better battery. I even have a law for this, which I call the
zeroth law of batteries and it states:
The performance of any battery will
fall (just) short of
our expectations irrespective of the complexity of the device it is
powering.
This is true for
our cell phones and Roomba’s. And true
for electric cars and plug-in cars.
That is, unless
you have low expectations.
The world has
seen some dramatic changes in battery technology over the last 20 years, ever
since the Li-ion battery became commercial.
For one, the smartphone revolution would not have occurred if not for
the batteries. A lot of improvements are
still possible with lithium-ion, and we project that battery energy densities
will double when we succeed in controlling more energetic anode and cathode
materials.
But what happens
after that? At the pace at which my
smartphone is evolving, with Retina Display screens, 4G networks, and movies
playing off of the air, it’s hard to see a doubling in energy being
enough.
Question then
is: What is after Li-ion batteries? And
is there something out there?
The answer is:
Yes. But getting there is not going to
be easy.
I wrote about
this in two blog posts titled “A brief history of batteries- Part 1” and “Part 2”. These two posts describe possible battery
chemistries of the future and make the point that to succeed we really need to
understand the past. And it is written
in the style of the movie “Pulp Fiction”. Can any battery textbook beat that?
I would suggest
that you read this blog post first.
Once you do that,
you will want to know: So what is the progress in these chemistries in the two
years that have elapsed since the blog post?
You will get an
answer to this question if you show up at the Claremont Hotel in Berkeley CA
between June 5-7, 2012 (a month from today)*.
This will be the venue of the 5th in a series of symposia
titled “Beyond Li-ion”. In a 2 ½ day period
various researchers, who are at the forefront of this field, will tell you what
the latest trends are.
It is an
impressive speaker list, which you can see here.
As a bonus, you
will get to come to Berkeley Lab to see our Lab facilities. More importantly, you may (I should
emphasize the fact that this is a real possibility) actually get to shake my
hand!
To attend you
will need to register, which you can do here.
Hope to see you all
(and I mean all 7 of you) there.
Venkat
p.s. Please don’t ask me to waive your
registration fee. Being a co-organizer
means that I write blog posts to promote the meeting. It does not mean that I
can come up with the cash to pay for your meals.
* The previous version wrongly gave the date of the conference as July. It is June 5-7, 2012
* The previous version wrongly gave the date of the conference as July. It is June 5-7, 2012
My expectations must be low, because I'm mostly concerned about Li-Ion (or any battery/fuel cell) replacing the ICE for autos, and not particularly worried about battery life for mobile devices.
ReplyDeleteWhat is your opinion on Dr. Cui's recent result of achieving 6000 cycles using double-walled silicon nanotubes? Sounds very promising to a layperson, though my first question is the fab cost of these nanotubes. I assume they're quite expensive at the moment; any hope of them achieving a marketable price? Cost is almost always the biggest hurdle to alt energy.
Good to see ya back.
Good one, although I thought you were going to reveal something really new. Now that I ma here, can you pl. comment on F-ion batteries based on CuF2 cathodes...? Where you at the ECS-Seattle meeting...? I missed you.
ReplyDeleteDear Mr.Venkat,
ReplyDeleteI am a 19 years old teen and I am really inspired by you to do research in battery, just like you. Now I am given 3 engineering course to choose: mechanical engineering, electrical engineering, chemical engineering. If I intend to follow your footstep to research in battery, which engineering course should I take?
Thank you very much.
Alex from Malaysia
Alex- you GOT to choose chemical engineering. Its the only one that matters :-)
DeleteVenkat
Disclaimer: Neither the author of this post or his family/friends take any responsibility for careers gone awry. On the other hand, if things go well, the authors takes full credit.
Are we going to get a review of the cutting edge battery technology discussed at the conference? Any new trends? Don't be such a tease.
ReplyDeleteVenkat, random note:
ReplyDeleteI bought a 2012 Volt and so if you are still contemplating actually buying an electric car I can give my real world usage (I commute from Dublin to Palo Alto (81 mile roundtrip).
Bottom line is: a good car and the subsidies (both obvious and not) make this a cost effective car for the owner. Especially if you are a "professional" in the bay area and your choices would be higher-end cars vs the volt/leaf/etc.
Wish I had discovered this blog 6 weeks ago
ReplyDeleteHi Venkat,
ReplyDeleteI am working with a brand to build an engaging content community that covers topics relating to auto repair, auto safety and insurance.
We’ve taken a read through your blog and we think you’ve done a fantastic job covering topics that our brand's audience would also be interested in covering. It would be great if you could join our community to help educate, inform and converse with those in the auto industry.
If you would like to learn more about this, please send an email to info@atomicreach.com
Thanks,
Anne
Li-ion battery are old style. We need something new
ReplyDeleteHow about some discussion on Envia battery for your next post?
ReplyDeleteWould like to here unbiased information.
Does it your for laws of batteries?
Buying a car battery can be confusing due to terms such as group size, cold cranking amps and prorated warranties. Knowing what these terms mean can help individuals get a battery that will fit their car and provide the energy needed without wasting money on overly powerful batteries.
ReplyDeleteInteresting article. I have read your previous article about batteries part 1 and part 2. Even i know at the pace at which smartphone is evolving with good speed and Retina Display screens its too hard for the engineers to develop such batteries for smartphones. Li-ion batteries will be the upcoming batteries which will be doubling the power of batteries.
ReplyDeleteBATTERIES and CELLS Market Analysis