Unexpected phase separation in Li1−xNi0.5Mn1.5O4 within a porous composite electrode

Mi Lu; Jian Wang; Haitao Fang; Yongfeng Hu; Jigang Zhou

doi:10.1039/C8CC01866A

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Unexpected phase separation in Li_1−xNi_0.5Mn_1.5O₄ within a porous composite electrode†

Mi Lu,^a Jian Wang,*^b Haitao Fang,^c Yongfeng Hu^b and Jigang Zhou

*^b

Author affiliations

* Corresponding authors

^a Key Laboratory of Functional Materials and Applications of Fujian Province, School of Materials Science and Engineering, Xiamen University of Technology, Xiamen, China

^b Canadian Light Source Inc., Saskatoon, Canada
E-mail: jigang.zhou@lightsource.ca, jian.wang@lightsource.ca
Fax: +1-306-6573535
Tel: +1-306-657-3587

^c School of Materials Engineering, Harbin Institute of Technology, China

Abstract

The Ni oxidation state in Li_1−xNi_0.5Mn_1.5O₄ (LNMO) within a composite electrode mapped by soft X-ray scanning transmission X-ray microscopy (STXM) has shown unexpected distinct variations in phase separation among and within individual battery particles, which has been experimentally correlated to both their morphology and interface structure for the first time. The obtained new insights will assist the further development of long-life high voltage LNMO batteries.

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Article information

DOI: https://doi.org/10.1039/C8CC01866A
Article type: Communication
Submitted: 08 Mar 2018
Accepted: 27 Mar 2018
First published: 27 Mar 2018

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Chem. Commun., 2018,54, 4152-4155

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Unexpected phase separation in Li_1−xNi_0.5Mn_1.5O₄ within a porous composite electrode

M. Lu, J. Wang, H. Fang, Y. Hu and J. Zhou, Chem. Commun., 2018, 54, 4152 DOI: 10.1039/C8CC01866A

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