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
- Battery Metal Lithium Left Behind as Commodities Reboundon June 29, 2020 at 4:47 am
Lithium has been left for dust during the rebound in commodity prices, but it could be poised to benefit from stimulus packages that aim to reduce greenhouse-gas emissions.
- How The Covid-19 Pandemic Is Impacting The Battery Sectoron June 28, 2020 at 3:05 pm
In today’s article I interview industry experts to explore the impact the Covid-19 pandemic is having on the battery sector.
- Lithium Ion Battery Market 2020 - Impact of COVID-19 on Opportunity Assessment, Global Analysis and Forecast Report To 2025on June 26, 2020 at 7:36 am
The scope of the report includes a detailed study of global and regional markets on Lithium Ion Battery Market with the reasons given for variations in the growth of the industry in certain regions.
- American Battery Metals Corporation Assesses Lithium-Ion Supply Chain Economy Amid Global Interruptionon June 26, 2020 at 7:30 am
INCLINE VILLAGE, NV / ACCESSWIRE / June 26, 2020 / American Battery Metals Corporation (OTCQB: ABML ) (the “Company”), an American-owned advanced extraction and battery recycl ...
- Argonne Scientists Make Lithium-Ion Battery Recycling Breakthroughson June 25, 2020 at 9:11 am
The Department of Energy’s ReCell Center at Argonne National Laboratory reported making several lithium-ion battery recycling breakthroughs since opening earlier last year.
- Unlocking the passivation nature of the cathode–air interfacial reactions in lithium ion batterieson June 25, 2020 at 2:06 am
Environmentally triggered degradation at the cathode–air interface is dictated by Li-ion de-intercalation caused by Li+-water interactions. Here, thin disordered rocksalt surface layers are reported ...
- German battery market growth driven by on lithium-ion demand: ZVEIon June 23, 2020 at 11:17 am
Germany's electronics industry saw a strong increase in the battery market last year, spurred by demand for lithium-ion batteries for electric cars in a wider roll-out aimed at cutting carbon ...
- Global Lithium-Ion Battery Separator Market to 2025 - by Manufacturers, Regions, Technology, Application & Product Typeon June 23, 2020 at 9:00 am
Ion Battery Separator Market Insights 2020, Analysis and Forecast Global and Chinese Market to 2025, by Manufacturers, ...
- Cool metric for lithium-ion batteries could spur progresson June 23, 2020 at 5:04 am
A new measure for the rate of heat removal from battery packs gives manufacturers a simple way to compare products.
- Using the game 'Jenga' to explain lithium-ion batterieson June 17, 2020 at 6:54 am
Tower block games such as Jenga can be used to explain to schoolchildren how lithium-ion batteries work, meeting an educational need to better understand a power source that has become vital to ...
via Bing News