Enhanced electrochemical performance of LiNaMnPOCO as a cathode material in "water-in-salt" electrolytes

A carbonophosphate compound of Li 2.72 Na 0.31 MnPO 4 CO 3 was synthesized via ion exchange. The initial discharge capacity of Li 2.72 Na 0.31 MnPO 4 CO 3 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 Li 2.72 Na 0.31 MnPO 4 CO 3 , the capacity rete...

Full description

Saved in:
Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 57; no. 95; pp. 1284 - 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
Published 30.11.2021
Online AccessGet full text

Cover

More Information
Summary:A carbonophosphate compound of Li 2.72 Na 0.31 MnPO 4 CO 3 was synthesized via ion exchange. The initial discharge capacity of Li 2.72 Na 0.31 MnPO 4 CO 3 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 Li 2.72 Na 0.31 MnPO 4 CO 3 , the capacity retention degraded to 64% after 100 cycles. A full cell composed of ion-exchanged Li 2.72 Na 0.31 MnPO 4 CO 3 from Na 3 MnPO 4 CO 3 and LiTi 2 (PO 4 ) 3 with a water-in-salt electrolyte exhibites operation voltage of approximately 1 V.
Bibliography:10.1039/d1cc04350a
Electronic supplementary information (ESI) available. See DOI
ISSN:1359-7345
1364-548X
DOI:10.1039/d1cc04350a