Thermal stability and phase transformation of electrochemically charged/discharged LiMnPO4 cathode for Li-ion batteries

Daiwon Choi; Jie Xiao; Young Joon Choi; John S. Hardy; M. Vijayakumar; M. S. Bhuvaneswari; Jun Liu; Wu Xu; Wei Wang; Zhenguo Yang; Gordon L. Graff; Ji-Guang Zhang

doi:10.1039/C1EE01501J

Thermal stability and phase transformation of electrochemically charged/discharged LiMnPO₄ cathode for Li-ion batteries†

Daiwon Choi,*^a Jie Xiao,^a Young Joon Choi,^a John S. Hardy,^a M. Vijayakumar,^a M. S. Bhuvaneswari,^a Jun Liu,^a Wu Xu,^a Wei Wang,^a Zhenguo Yang,^a Gordon L. Graff^a and Ji-Guang Zhang*^a

Author affiliations

* Corresponding authors

^a Pacific Northwest National Laboratory, 902 Battelle Boulevard P. O. Box 999, Richland, WA, USA
E-mail: daiwon.choi@pnl.gov, jiguang.zhang@pnl.gov
Fax: +1 509-375-4448
Tel: +1 509-375-4341

Abstract

Electrochemically active LiMnPO₄ nanoplates at lithiated/delithiated state were subjected to thermal stability and phase transformation evaluations for safety as a cathode material for Li-ion batteries. The phase transformation and oxygen evolution temperature of delithiated MnPO₄ were characterized using in situ hot-stage X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric-differential scanning calorimetry-mass spectroscopy (TGA-DSC-MS), transmission electron microscopy and scanning electron microscopy (SEM)-energy dispersive X-ray analysis (EDAX).

Energy & Environmental Science

Thermal stability and phase transformation of electrochemically charged/discharged LiMnPO₄ cathode for Li-ion batteries†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Thermal stability and phase transformation of electrochemically charged/discharged LiMnPO₄ cathode for Li-ion batteries

Social activity

Search articles by author

Spotlight

Advertisements

Energy & Environmental Science