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 4:51:23 PM
That would be nice, but I am sure it isnt just "pick a # that fits with peoples usage". They are likely getting it as good as it can get with the current "economically viable" tech (meaning, if it would cost an extra $500 to get it from 500 to 730 days, its not worth it to anyone).
"The whole principle [of censorship] is wrong. It's like demanding that grown men live on skim milk because the baby can't have steak." -- Robert Heinlein
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
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Researchers Hope to Find "Exotic" Lifeforms Inside Crater of Dinosaur Killing Meteor
April 14, 2015, 8:47 PM
Mathematician's Sociological Formulation May Explain the "Hipster Paradox"
April 14, 2015, 1:13 PM
Cool Science Video: This is What a McDonald's Burger Looks Like in Your Stomach
April 7, 2015, 1:43 PM
Fraud Artist Engineered Stunning UK Jailbreak Via Typosquatting, Email
April 4, 2015, 2:57 PM
Food Chemists at Italy's Barilla Claim to Have Perfect Instant Noodles w/out Frying
March 26, 2015, 4:25 PM
Most Popular Articles
Windows 10 Build 10061: A Quick Review
April 27, 2015, 10:57 AM
Ding Dong the Deal is Dead: What's Next After Failed Comcast/TWC Merger
April 28, 2015, 2:06 PM
Report: Apple Pulls the Plug on Apple Watch Store Launch
April 16, 2015, 3:18 PM
Quick Note: Lady Macbath -- One Japanese Woman's Apple Themed Revenge
April 23, 2015, 11:47 AM
After Record-Setting Week, Samsung Predicts 70 Million GS6/GS6 Edge Sales
April 17, 2015, 8:39 PM
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 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information