Stanford researchers create a self-healing Li-Ion battery that can last

Stanford researchers create a self-healing Li-Ion battery that can last

Whoever cracks the battery puzzle will become a billionaire overnight, and many research centers and universities are fully aware of that, putting hard work into developing new electrodes that will make juicers in phones and cars last longer and stay safer.

Stanford just chipped in with the announcement it has created the so-called self-healing battery, which uses a "stretchy polymer that coats the electrode, binds it and spontaneously heals tiny cracks that develop."

The need for such a polymer coating arose when the researchers, always experimenting with new electrode materials, found out that silicon proved to be a great choice if you want to keep the weight in check, and the battery capacity much higher than what we have now. Unfortunately, silicon also swells up to three time while soaking up lithium ions from the battery fluid, and then shrinks back when discharging them.

All that motion quickly introduces tiny cracks in the brittle material, and it flies off the electrode, degrading battery performance. The new polymer coating kind of seals the silicon, filling the fractures in when they appear. As per Chao Wang, a postdoc at Stanford, and an associate professor who co-led the research:

source: Stanford 



1. D.Aceveda

Posts: 430; Member since: Jun 30, 2012

This is the sort of battery tech Samsung should be developing!! Stop just increasing the size!

2. itsdeepak4u2000

Posts: 3718; Member since: Nov 03, 2012

Great! Soon everything would come with self healing thing and then there'll be no need or less need to repair our phones.

3. XaErO

Posts: 353; Member since: Sep 25, 2012

How long users have to wait to see this technology become available for Smartphones or Vehicles ??

4. mr.techdude

Posts: 571; Member since: Nov 19, 2012

Also better displays should stop for a while and START WORKING ON battery life performance.

5. taikucing unregistered

Self healing case & self healing battery. Good!

6. rawbow

Posts: 428; Member since: Mar 30, 2012

Now that's innovation!

7. WindowsiDroid

Posts: 138; Member since: Jul 22, 2013

I would rather have huge battery with 720p than having 2560 x 1440 with just little battery >.

8. Slammer

Posts: 1515; Member since: Jun 03, 2010

More evidence that sealing batteries inside devices is not yet ready for prime time. The vulnerability of the common battery is that it is old technology. Advances have been made to eliminate the memory tolerance issues of NiCad and implement Li-On as its replacement. Unfortunately, the basic principle remains with the key chemicals and elements that encompass the battery design. This article clearly points out the issues that arise with each charge applied to the battery and the problems inherent to it. Removable batteries allow the user to keep their perfectly good device by just replacing the battery themselves. The above tech is still many years away and how much money are consumers going to needlessly spend on battery replacement from service centers until then? My continued quest for the industry is to keep removable batteries relevant until a much more stable energy cell is applied before sealing them up like Fort Knox. John B.

9. ardent1

Posts: 2000; Member since: Apr 16, 2011

This must be your favorite topic.

10. Slammer

Posts: 1515; Member since: Jun 03, 2010

Actually, I hate it. However, people don't seem to take this cash grab seriously. You purchase a new device. Wierd things start to happen outside the warranty period. The sergice center claims it can't be fixed and you are somehow told to pay anywhere between 150-200 dollars for a refurbished device. Not only are you still paying for your original device, you now just spent an additional couple hundred. Then when you find out that almost 35% of phone issues are due to failed or failing batteries, you realize that consumers are slowly being groomed for needless spending just so insurance companies, manufacturers and service centers can make huge dollars off people that can't change their own battery. If you don't like what I have to say, at least answer the question why you would voluntarily sacrifice your income to savings ratio because the industry feels you are not going to change your own battery. John B.

11. buccob

Posts: 2952; Member since: Jun 19, 2012

Yes, soon it will be "Self Healing Terminators"... judgement day is getting closer... :P

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