Enhanced electrochemical performance of Li2.72Na0.31MnPO4CO3 as a cathode material in “water-in-salt” electrolytes

A carbonophosphate compound of Li2.72Na0.31MnPO4CO3 was synthesized via ion exchange. The initial discharge capacity of Li2.72Na0.31MnPO4CO3 in 15 molal (or 15 m) LiTFSI was 110 mA h g−1 at 2 mA cm−2 (∼0.5C). Due to the decomposition of Li2.72Na0.31MnPO4CO3, the capacity retention degraded to 64% af...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-11, Vol.57 (95), p.12840-12843
Main Authors: Xie, Baowei, Sakamoto, Ryo, Kitajou, Ayuko, Zhao, Liwei, Nakamoto, Kosuke, Okada, Shigeto, Albrecht, Ken, Kobayashi, Wataru, Okada, Masaki, Takahara, Toshiya
Format: Article
Language:English
Subjects:
Chemical synthesis
Electrochemical analysis
Electrode materials
Electrolytes
Ion exchange
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Summary:A carbonophosphate compound of Li2.72Na0.31MnPO4CO3 was synthesized via ion exchange. The initial discharge capacity of Li2.72Na0.31MnPO4CO3 in 15 molal (or 15 m) LiTFSI was 110 mA h g−1 at 2 mA cm−2 (∼0.5C). Due to the decomposition of Li2.72Na0.31MnPO4CO3, the capacity retention degraded to 64% after 100 cycles.
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc04350a