Polymer sandwich current collector boosts battery density, quells fire
Battery researchers are continually experimenting with alternative materials in an effort to boost performance, and a group from Stanford University and SLAC National Accelerator Laboratory is claiming to have landed on a winner. The team has redesigned the current collector component of lithium-ion batteries in a way that greatly reduces their weight, making them not only more efficient but also more resistant to fires.
Lithium-ion batteries feature a pair of current collectors, which work with the device’s two electrodes to distribute the current flowing in either direction. Today’s current collectors are typically made from sheets of copper or aluminum foil, which makes them one of the battery’s heaviest components, sometimes accounting for as much as 50 percent of the overall weight of the device.
Therefore, considerable performance improvements are to be gained by making these components and in turn the batteries themselves, lighter. This would enable them to store more energy per unit of weight, which would reduce the load an electrical vehicle has to carry with it, for example, allowing them to travel farther on each charge.
Previous approaches to this problem have involved tweaking current collectors to make them more porous or thin, as a way of cutting weight. But these have led to batteries that are more fragile, are chemically unstable or need to be compensated for by adding more electrolyte material, which makes them more costly.
The team from Stanford University and SLAC National Accelerator Laboratory were experimenting with another material entirely, a lightweight polymer called polymide. This was integrated with a fire retardant called triphenyl phosphate, or TPP, with the material then coated on either side with a very thin sheet of copper.
-
The OLED BurnPeople aren't cool with the LAPD getting drones15 holiday gifts that teachers will actually likeTim Cook promises a new Mac mini will come some dayHow to trademark your TikTok phrase and protect your brandChina, 11 more countries restrict travel from S. Korea over coronavirus concernFeather eyebrows are a trend now and it's tearing everyone apartN. Korea says it conducted 'strategic cruise missile' drills this weekThe Astounding World of Automata市慈善总会传递社会爱心 看望慰问267户特困群众
下一篇:NYT mini crossword answers for August 29
- ·Project 2025 Comstock Act: Trump’s new abortion comment exposed.
- ·Obama’s Laos visit is pretty awkwardly timed for Hillary
- ·EU condemns 'reckless' North Korean missile launch
- ·Skier eats it going off a jump and flips 7 times before stopping
- ·Arshad Nadeem receives Hilal
- ·15 holiday gifts that teachers will actually like
- ·US imposes fresh sanctions to restrict North Korea's revenues
- ·N. Korea says it fired Hwasong
- ·The Eyes of Lacy
- ·震后出国务工两年 归来赞叹家乡变化
- ·It's not been easy to understand Sarri, says Bonucci
- ·Anna Kendrick can't help but get anxious over Kendrick Lamar's success
- ·Revolutionary grid
- ·N. Korea to hold key party meeting amid severe food shortages
- ·O'Sullivan should withdraw from World Championship, says Judd Trump
- ·No genetic mutation in new coronavirus found: KCDC
- ·高燃!哨响表停赛不止,2024广东“村BA”开赛在即,一分钟带你重温高光瞬间。
- ·Cheong Wa Dae holds security ministers' meeting on N. Korea's projectile launch
- ·Kevin Hart is your 2019 Oscars host
- ·Dolphins appear to enjoy watching television, just like you
- ·11 Unique Amaros and Liqueurs to Level Up Your Aperol Spritz
- ·Obama grants 111 commutations, continuing historic clemency.
- ·Georgetown University will give admissions preference to descendants of slaves.
- ·US intensifying 'every leg of nuclear triad' to ensure deterrence: Gen. Cotton
- ·Campbell highlights Washington Declaration amid security concerns over Putin
- ·NK leader calls for attaining grain production goal amid reports of food shortages
- ·Weather update for second Pak vs Ban second Test match day one
- ·China, 11 more countries restrict travel from S. Korea over coronavirus concern
- ·EU condemns 'reckless' North Korean missile launch
- ·NK leader attends groundbreaking ceremony for housing project in Pyongyang
- ·Game Plan
- ·White nationalist caught assaulting protester on viral video blames President Trump in court
- ·No genetic mutation in new coronavirus found: KCDC
- ·North Korea still one of worst countries for human rights, freedom: report
- ·DOJ accuses TikTok of collecting and sharing users' personal views, as the app fights a ban
- ·雅西高速石棉至彝海路段解除管制恢复通行