HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Blog
USC Researchers Invent Longer-Lasting Lithium-Ion Battery
2/25/2013

Researchers at the University of Southern California, led by Professor Chongwu Zhou, replaced graphite with porous silicon nanoparticles in anodes of lithium-ion batteries to come up with a new design. The battery, which could be available in two to three years, has a longer life and charges more quickly than lithium-ion batteries used now.   (Source: Mingyuan Ge & Chongwu Zhou/USC)
Researchers at the University of Southern California, led by Professor Chongwu Zhou, replaced graphite with porous silicon nanoparticles in anodes of lithium-ion batteries to come up with a new design. The battery, which could be available in two to three years, has a longer life and charges more quickly than lithium-ion batteries used now.
(Source: Mingyuan Ge & Chongwu Zhou/USC)

Return to Article

View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 2/3  >  >>
Ann R. Thryft
User Rank
Blogger
Re: Longer Lasting?
Ann R. Thryft   2/26/2013 5:31:36 PM
NO RATINGS
Jack, that's not a spec or a standard, just a handle that immediately gives a picture of how long a battery charge lasts in a cell phone app, based on what the app is used for, in this case, talking. I suppose you could say "video watching time" if you had a battery-powered video player. I don't even know if the term is still in use. Back in the day I used to do the same kind of monitoring you describe on my Mac laptop, although it now comes with preset options for Battery vs AC Power, and switches automatically depending on whether it's plugged in.

Jack Rupert, PE
User Rank
Platinum
Re: Longer Lasting?
Jack Rupert, PE   2/26/2013 4:37:49 PM
NO RATINGS
Ann, I didn't know about the "talk-time" term either.  Is there a standard for calculating it?  I pay more attention to monitoring the battery hours on my laptop, so I know that there are a whole bunch of things that can affect that (brightness, software being run, communication devices, etc.).  I would think that there would need to be a certain standard combination of those types of inputs for comparison across products.

Ann R. Thryft
User Rank
Blogger
Re: Longer Lasting?
Ann R. Thryft   2/26/2013 12:20:18 PM
NO RATINGS
I think we could use a few different versions of "talk time" for other, non-cell phone apps, to indicate length of charge. Anybody know any?

warren@fourward.com
User Rank
Platinum
Now we're talkin!
warren@fourward.com   2/26/2013 9:16:31 AM
NO RATINGS
The weakness in any portable system is the battery. If you can recharge in 10 minutes, you have a winner. And they said nothing good ever came out of California...

Elizabeth M
User Rank
Blogger
Re: Innovation is happening
Elizabeth M   2/26/2013 6:23:49 AM
NO RATINGS
Yes, it would be great if they could overcome what you note is a long-time hurdle. This would be a great invention, particularly for the future of electric vehicles and could overcome any remaining hurdles to adoption. It's good to know at least that some very clever people are looking at the problem in new ways.

Elizabeth M
User Rank
Blogger
Re: Longer Lasting?
Elizabeth M   2/26/2013 6:20:42 AM
NO RATINGS
I didn't know that term, Ann, but it makes sense! Now I will know to use it when I am talking about cell phone batteries anyway and avoid any confusion in the future.

Charles Murray
User Rank
Blogger
Re: Innovation is happening
Charles Murray   2/25/2013 7:16:57 PM
NO RATINGS
Nice story, Liz. Let's hope this technology reaches its potential. Material scientists have tried many lithium-ion chemistries over the past 20 years and short cycle life has often been a problem. Lithium-sulfur, for example, has offered high energy but has had problems getting past about 50 cycles. Most automakers are looking for a minimum of a thousand cycles. Some are looking for 2,000 because they want some margin for warranties. Let's hope these engineers can do it.

Ann R. Thryft
User Rank
Blogger
Re: Longer Lasting?
Ann R. Thryft   2/25/2013 5:44:42 PM
NO RATINGS
Thanks for posting this: potentially really good news. And yes, it's helpful to use two different terms for total lifespan and length of charge. In cell phone batteries, the latter is called "talk time."

TJ McDermott
User Rank
Blogger
Re: Longer Lasting?
TJ McDermott   2/25/2013 1:32:39 PM
NO RATINGS
And I should have said "at first glance" in my message.  You DID use two different terms: lifespan and longer lasting.

I'm with you, a longer-lasting battery with quicker charge will be VERY welcome.

Elizabeth M
User Rank
Blogger
Re: Longer Lasting?
Elizabeth M   2/25/2013 1:25:00 PM
NO RATINGS
Yes, you're right, TJ...tricky wording there...It depends on what you mean as longer lasting. The battery will run out more quickly but it will continue to be charged and recharged longer, and apparently they are working on the design so it will eventually be longer lasting in both respects. Sorry for the confusion...I should have worded it more clearly.

<<  <  Page 2/3  >  >>
Partner Zone
More Blogs
Researchers in Canada have developed a chin strap that harvests energy from chewing and can potentially power a digital earplug that can provide both protection and communication capabilities.
In case you haven't heard, the deadline to enter the 2014 Golden Mousetrap Awards is coming up fast – Oct. 28! Have you entered yet?
Enabling the Future is designing prosthetic appendages modeled more like superhero arms and hands than your average static artificial limbs. And they’re doing it through a website and grassroots movement inspired by two men’s design and creation in 2012 of a metal prosthetic for a child in South Africa.
In order to keep an enterprise truly safe from hackers, cyber security has to go all the way down to the device level. Icon Labs is making the point that security has to be built into device components.
Three days after NASA's MAVEN probe reached Mars, India's Mangalyaan probe went into orbit around the red planet. India's first interplanetary mission, and the first successful Mars probe launched by an Asian nation, has a total project cost of nearly $600 million less than MAVEN's.
Design News Webinar Series
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: October 2
Sponsored by Altera
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service