Superconcentrated electrolytes for a high-voltage lithium-ion battery
The University of Tokyo · Kyoto University · +2 more institutions
Abstract
Finding a viable electrolyte for next-generation 5 V-class lithium-ion batteries is of primary importance. A long-standing obstacle has been metal-ion dissolution at high voltages. The LiPF6 salt in conventional electrolytes is chemically unstable, which accelerates transition metal dissolution of the electrode material, yet beneficially suppresses oxidative dissolution of the aluminium current collector; replacing LiPF6 with more stable lithium salts may diminish transition metal dissolution but unfortunately encounters severe aluminium oxidation. Here we report an electrolyte design that can solve this dilemma. By mixing a stable lithium salt LiN(SO2F)2 with dimethyl carbonate solvent at extremely high…
Citation impact
- FWCI
- 40.73
- Percentile
- 100%
- References
- 36
Authors
6- JWJianhui WangCorresponding
The University of Tokyo
- YYYuki Yamada
Kyoto University, The University of Tokyo
- KSKeitaro Sodeyama
National Institute for Materials Science, Kyoto University, Japan Science and Technology Agency
- CHChing Hua Chiang
The University of Tokyo
- YTYoshitaka Tateyama
National Institute for Materials Science, Kyoto University
Topics & keywords
- Dissolution
- Electrolyte
- Dimethyl carbonate
- Battery (electricity)
- Lithium (medication)
- Inorganic chemistry
- Salt (chemistry)
- Transition metal