1. Solid-State Electrolyte Anchored with a Carboxylated Azo Compound for All-Solid-State Lithium Batteries
- Author
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Chao Luo, Ji Chen, Jianjun Jiang, Karen J. Gaskell, Yujia Liang, Xiao Ji, Chunsheng Wang, and Xinzi He
- Subjects
Materials science ,Azo compound ,Ionic bonding ,02 engineering and technology ,General Chemistry ,Electrolyte ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,7. Clean energy ,01 natural sciences ,Catalysis ,0104 chemical sciences ,chemistry.chemical_compound ,Azobenzene ,chemistry ,Chemical engineering ,13. Climate action ,Carboxylate ,Solubility ,0210 nano-technology ,Dissolution - Abstract
Organic electrode materials are promising for green and sustainable lithium-ion batteries. However, the high solubility of organic materials in the liquid electrolyte results in the shuttle reaction and fast capacity decay. Herein, azo compounds are firstly applied in all-solid-state lithium batteries (ASSLB) to suppress the dissolution challenge. Due to the high compatibility of azobenzene (AB) based compounds to Li3 PS4 (LPS) solid electrolyte, the LPS solid electrolyte is used to prevent the dissolution and shuttle reaction of AB. To maintain the low interface resistance during the large volume change upon cycling, a carboxylate group is added into AB to provide 4-(phenylazo) benzoic acid lithium salt (PBALS), which could bond with LPS solid electrolyte via the ionic bonding between oxygen in PBALS and lithium ion in LPS. The ionic bonding between the active material and solid electrolyte stabilizes the contact interface and enables the stable cycle life of PBALS in ASSLB.
- Published
- 2018