Degraded Electrodes Observed In Aging Batteries

schliz writes "Scientists have identified nanoscale changes in aging lithium-ion batteries that could be responsible for their degradation over time. By dissecting and examining dead batteries, they found that some lithium was irreversibly lost from the positive to negative electrode of dead batteries, and no longer participated in charging and discharging. They discovered that finely-structured nanomaterials on dead batteries' electrodes had coarsened in size, and theorise that the coarsening of the cathode may be responsible for the loss of lithium."

Comments

Too bad your mom!

[PeopleMakeMeLOL]

I guess she'll have to replace her rechargeable batteries in her Silver Bullet sooner than expected...

Re:News? Not news.

[Algorithmnast]

And instead of just taking the "attributed" reason they bothered to do some work and report on what they suspect is the actual physical/chemical cause rather than just a catch-all "disorder". Since that helps with trying to reduce the problem.

Why didn't you do that sometime in the last 20 years if it was so damn obvious?

1. Instead of taking the "attributed" value of G in physics, we can keep re-testing it every few years just to ensure that we keep science alive - but I won't call it "News" when that's done.
2. I stopped doing Chemistry 20 years ago, when I started doing Computer Science.
3. They'll wind up increasing entropy in the process of trying to avoid it [but you may have had to take CHM 102 for that...]
4. It's cheaper both in terms of money and entropy to recycle the battery instead of trying to slow down the molecular rearrangement into a permanent lower energy state.

Thanks for ths easy questions. Next time try some of Dr. Tantrum's "Elixer for Polite Discourse" before you post.

But if they wanted to get research grants instead of doing "real work", then they did a great job.

YUO FyAIL IT!!

[Anonymous Coward]

same wor7hless to fight what has