A group of Washington State University researchers has developed a chewing gum-like battery material that could dramatically improve the safety of lithium ion batteries.
Led by Katie Zhong, Westinghouse Distinguished Professor in the School of Mechanical and Materials Engineering, the researchers recently reported on their work in the journal, Advanced Energy Materials. They have also filed a patent.
High performance lithium batteries are popular in everything from computers to airplanes because they are able to store a large amount of energy compared to other batteries. Their biggest potential risk, however, comes from the electrolyte in the battery, which is made of either a liquid or gel in all commercially available rechargeable lithium batteries. Electrolytes are the part of the battery that allow for the movement of ions between the anode and the cathode to create electricity. The liquid acid solutions can leak and even create a fire or chemical burn hazard.
While commercial battery makers have ways to address these safety concerns, such as adding temperature sensors or flame retardant additives, they “can’t solve the safety problem fundamentally,’’ says Zhong.
Zhong’s research group has developed a gum-like lithium battery electrolyte, which works as well as liquid electrolytes at conducting electricity but which doesn’t create a fire hazard.
Researchers have been toying around with solid electrolytes to address safety concerns, but they don’t conduct electricity well and it’s difficult to connect them physically to the anode and cathode. Zhong was looking for a material that would work as well as liquid and could stay attached to the anode and cathode – “like when you get chewing gum on your shoe,’’ she told her students.
Advised by Zhong, graduate student Yu “Will” Wang designed his electrolyte model specifically with gum in mind. It is twice as sticky as real gum and adheres very well to the other battery components.
The material, which is a hybrid of liquid and solid, contains liquid electrolyte material that is hanging on solid particles of wax or a similar material. Current can easily travel through the liquid parts of the electrolyte, but the solid particles act as a protective mechanism. If the material gets too hot, the solid melts and easily stops the electric conduction, preventing any fire hazard. The electrolyte material is also flexible and lightweight, which could be useful in future flexible electronics. You can stretch, smash, and twist it, and it continues to conduct electricity nearly as well as liquid electrolytes. Furthermore, the gummy electrolyte should be easy to assemble into current battery designs, says Zhong.
The Latest on: Lithium ion batteries
via Google News
The Latest on: Lithium ion batteries
- Israeli 5-minute battery charge aims to fire up electric carson March 7, 2021 at 1:13 am
Ultra-fast recharge specialists StoreDot have developed a first-generation lithium-ion battery that can rival the filling time of a standard car at the pump. "We are changing the entire experience of ...
- Built to last: New copolymer binder to extend the life of lithium ion batterieson March 5, 2021 at 8:00 am
The capacity of lithium-ion batteries decreases over time partly due to the degradation of the binder that protects the graphite anode. To address this problem, scientists from the Japan Advanced ...
- New copolymer binder to extend the life of lithium ion batterieson March 5, 2021 at 6:59 am
Anyone who has owned a smartphone for over a year is most likely aware that its built-in lithium (Li)-ion battery does not hold as much charge as when the device was new. The degradation of Li-ion ...
- Federal government is warning not to buy, use, or even throw away loose lithium-ion battery cellson March 4, 2021 at 11:29 am
These cells are manufactured as industrial component parts of battery packs and are not intended for individual sale to consumers, according to a commission press release.
- Flux Power Announces Increasing Traction of X-Series Lithium-ion Battery Packs with New Customerson March 4, 2021 at 10:17 am
Flux Power has initiated delivery of its LiFT Pack X48 lithium-ion battery packs for two new customers to power their fleets of Class I forklifts.
- Attractive Opportunities in the Lithium-Ion Battery Marketon March 4, 2021 at 9:11 am
The global lithium-ion battery market size is estimated to grow from USD 44.2 billion in 2020 to USD 94.4 billion by 2025; it is expected to grow at a CAGR of 16.4%. The growth of this market is ...
- Anode Grade Material of Lithium Ion Battery Market with Key Players, Applications, Trends and Forecasts to 2026on March 4, 2021 at 5:07 am
Selbyville, Delaware, According to this latest study, the 2020 growth of Anode Grade Material of Lithium Ion Battery will have significant change from previous year. By the most conservative estimates ...
- Global Lithium-ion Battery for Vehicles Market By Type, By Application, By Segmentation, By Region, and By Countryon March 3, 2021 at 8:49 pm
Projected and forecast revenue values are in constant U.S. dollars, unadjusted for inflation. Product values and ...
- Chemists develop a new technology to prevent lithium-ion batteries from catching fireon March 3, 2021 at 10:05 am
Lithium-ion battery fire hazards are extensive worldwide and such failure can have a severe implication for both smartphones and electric cars, says the head of the group and Professor in the ...
- NeoVolta at the Forefront of Solar Battery Safety with Lithium Iron Phosphate Technology: A Safer Alternative to Lithium Ionon March 2, 2021 at 10:21 am
Tolerant and Generally Safer for In-Home Installations than Lithium Ion SAN DIEGO, CA / ACCESSWIRE / March 2, 2021 / NeoVolta Inc. (OTCQB:NEOV) - NeoVolta home energy storage systems are equipped ...
via Bing News