Self-Healing Battery Electrode Shows Promise for Smartphones, EVs
November 18, 2013 3:03 PM
comment(s) - last by
The new electrode is made of silicon and coated with a self-healing polymer
Smartphones are increasingly able to do more and more as they evolve, but these enhanced capabilities also drain the battery much quicker. And electric vehicles are a promising way to help the environment and save money at the pump, but electric range remains a concern for drivers who don't want a dead battery when traveling from point A to point B.
In other words,
that power devices and vehicles used today could always use extra charge capacity. Now, researchers at Stanford and the SLAC National Accelerator Laboratory have found a potential way of doing just that.
According to a new report from
, the scientists have developed a self-healing battery electrode that will allow for greater charge capacity in lithium-ion batteries.
Researchers have seen silicon as a potential battery electrode material for awhile now because it's capable of holding large amounts of energy while
the battery charges
, which extends its life.
The problem is that silicon electrodes expand when they're charged, and contract when the electrons release. This causes them to stress and crack from the expansion until electrons can no longer be stored.
But the latest study aims to fix that problem by coating the silicon electrodes with self-healing polymer. When this polymer expands, it also cracks like the silicon. However, the broken bonds of the polymer "attract" one another, and returns back to its original shape.
By coating the silicon with this sort of material, it can expand all it wants without cracking, and the electrodes can continue storing more energy without worry.
So far, the technology appears to be working. The researchers have put the electrodes through 100 charge-discharge cycles without any issues.
However, the team said the coated electrodes need to achieve 500 cycles for smartphones and 3,000 cycles for electric vehicles, so further testing is necessary before it can be considered a sure thing.
"The ability to repair damage spontaneously, which is termed self-healing, is an important survival feature in nature because it increases the lifetime of most living creatures," said the team in their study. "This feature is highly desirable for rechargeable batteries because the lifetime of high-capacity electrodes, such as silicon anodes, is shortened by mechanical fractures generated during the cycling process."
This article is over a month old, voting and posting comments is disabled
RE: How about 730ish for a cellphone batter...
11/18/2013 4:55:57 PM
Let's not get greedy. 500 and 3000 are both way more than 0.
"We are going to continue to work with them to make sure they understand the reality of the Internet. A lot of these people don't have Ph.Ds, and they don't have a degree in computer science." -- RIM co-CEO Michael Lazaridis
Study: Lithium-Ion Batteries Can Impact Environment, Health Negatively
June 3, 2013, 1:41 PM
High School Student Creates Storage Device that Can Charge in 20 Seconds
May 20, 2013, 6:51 AM
Creationists are Mad About Google Doodle Depicting Evolution
November 24, 2015, 8:48 PM
DHS and TSA: Whoops, We Missed That 73 Airport Employees May be Terrorists
November 19, 2015, 2:16 PM
Star Wars Spinoff Film "Rogue One", Theme Park Attractions Announced
August 17, 2015, 12:20 PM
SpaceX Falcon 9's Seventh Supply Mission to ISS Ends w/ Fiery Stage 1 Explosion
June 28, 2015, 1:10 PM
Cool Science Video: Glowing Millipede Prowls the Nevada Desert
May 18, 2015, 12:00 PM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2016 DailyTech LLC. -
Terms, Conditions & Privacy Information