A General Strategy of Anion-Rich High-Concentration Polymeric Interlayer for High-Voltage, All-Solid-State Batteries
- Authors
- Bae, Jiwoong; Zhang, Xiao; Guo, Xuelin; Yu, Guihua
- Issue Date
- Jan-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- solid-state battery; high concentration; lithium-ion conductor; polymer coating; high-voltage cathode
- Citation
- NANO LETTERS, v.21, no.2, pp 1184 - 1191
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANO LETTERS
- Volume
- 21
- Number
- 2
- Start Page
- 1184
- End Page
- 1191
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189226
- DOI
- 10.1021/acs.nanolett.0c04959
- ISSN
- 1530-6984
1530-6992
- Abstract
- All-solid-state batteries are promising energy storage systems as a power source for future electric applications. However, the solid electrolytes have suffered from oxidative vulnerability at the catalytic cathode's surface, particularly at the high-voltage charging process. The poor charge transport and the contact issue at the electrolyte/electrode interface also hamper fully utilizing high-energy-density batteries. In this work, a general design of a high-concentration polymeric interlayer is developed. The interactions between a number of anions in the high-salt-concentration and the polymer chain's functional groups have shown outstanding physicochemical properties, including the rich solvation sites and conductive nanochannels, which Li+ ions can coordinate to or conduct through. The high-concentration polymeric interlayer is also highly resistant to oxidation (up to 5 V) that leads to significant improvement in cycle life with various cathodes, including LiNi1/3Co1/3Mn1/3O2, LiCoO2 and LiFePO4, demonstrating a high Coulombic efficiency over 99.9%.
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