Imaging state of charge and its correlation to interaction variation in an LiMn0.75Fe0.25PO4 nanorods–graphene hybrid

Jigang Zhou; Jian Wang; Yongfeng Hu; Tom Regier; Hailiang Wang; Yuan Yang; Yi Cui; Hongjie Dai

doi:10.1039/C3CC39015B

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Imaging state of charge and its correlation to interaction variation in an LiMn_0.75Fe_0.25PO₄nanorods–graphene hybrid†

Jigang Zhou,*^ab Jian Wang,*^a Yongfeng Hu,^a Tom Regier,^a Hailiang Wang,^c Yuan Yang,^d Yi Cui^d and Hongjie Dai^c

Author affiliations

* Corresponding authors

^a Canadian Light Source Inc., Saskatoon, Canada
E-mail: jigang.zhou@lightsource.ca, jian.wang@lightsource.ca

^b Harbin Institute of Technology, Harbin, China

^c Department of Chemistry, Stanford University, USA

^d Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA

Abstract

Visualization of the state of charge (SOC) in an LiMn_0.75Fe_0.25PO₄ nanorods–graphene hybrid nanostructure (LMFP–C) is realized by chemical mapping of the Fe valance state using scanning transmission X-ray microscopy (STXM). The LMFP–graphene interaction strength variation studied by C K-edge STXM has been correlated to SOC variation, i.e. a stronger interaction was observed for sample regions with a higher SOC in LMFP. Such structure–performance correlation opens new perspectives for a rational design of a better performance olivine cathode for lithium ion batteries.

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Article information

DOI: https://doi.org/10.1039/C3CC39015B
Article type: Communication
Submitted: 17 Dec 2012
Accepted: 10 Jan 2013
First published: 11 Jan 2013

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Chem. Commun., 2013,49, 1765-1767

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Imaging state of charge and its correlation to interaction variation in an LiMn_0.75Fe_0.25PO₄ nanorods–graphene hybrid

J. Zhou, J. Wang, Y. Hu, T. Regier, H. Wang, Y. Yang, Y. Cui and H. Dai, Chem. Commun., 2013, 49, 1765 DOI: 10.1039/C3CC39015B

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