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LISICON structured Li3V2(PO4)3 with high rate and ultralong life for low-temperature lithium-ion batteries

Authors :
Ruihuan Qin
Tianyou Zhai
Huiqiao Li
Yaqing Wei
Source :
Journal of Materials Chemistry A. 6:9737-9746
Publication Year :
2018
Publisher :
Royal Society of Chemistry (RSC), 2018.

Abstract

Current electrode materials for commercial lithium ion batteries (LIBs) suffer from poor low temperature electrochemical performance, which seriously limits their application in winter and cold climate areas. Herein, pure phase LISICON structured Li3V2(PO4)3 (r-LVP) was successfully prepared and investigated for the first time as a low temperature cathode for LIBs. Benefiting from a fast ionic conductive structure and high structural stability, the r-LVP exhibits an outstanding high rate performance in a wide temperature range from 25 °C to āˆ’20 °C. Even at āˆ’30 °C, a discharge capacity of 90 mA h gāˆ’1 at 0.2C can be achieved, corresponding to 80% of the room temperature capacity. After 5000 cycles at a high rate of 10C, 84% of the initial capacity can be retained at āˆ’10 °C. Such a high rate capability and long cycle stability promise r-LVP could be a competitive candidate for low temperature LIBs.

Details

ISSN :
20507496 and 20507488
Volume :
6
Database :
OpenAIRE
Journal :
Journal of Materials Chemistry A
Accession number :
edsair.doi...........0d54aee239b4a2bf78cc17fab6404a62
Full Text :
https://doi.org/10.1039/c8ta01124a