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 inChemical communications (Cambridge, England) Vol. 57; no. 95; pp. 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 Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 30.11.2021
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.
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ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc04350a