In situ X-ray diffraction study of the lithium excess layered oxide compound Li[Li 0.2Ni 0.2Mn 0.6]O 2 during electrochemical cycling

Christopher R. Fell; Miaofang Chi; Ying Shirley Meng; Jacob L. Jones

doi:10.1016/j.ssi.2011.11.018

In situ X-ray diffraction study of the lithium excess layered oxide compound Li[Li _0.2Ni _0.2Mn _0.6]O ₂ during electrochemical cycling

Christopher R. Fell, Miaofang Chi, Ying Shirley Meng, Jacob L. Jones

electron Microscopy and Microanalysis

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

In situ X-ray diffraction patterns were collected using a laboratory X-ray diffractometer during the first electrochemical charge/discharge cycle of the layered lithium excess compound Li[Li _0.2Ni _0.2Mn _0.6]O ₂ in the family of Li[Ni _xLi _{1/3 - 2x/3}Mn _{2/3 - x/3}]O ₂ (x = 1/5). Dynamic changes in peak positions, lattice parameters, and microstrain help to explain the lithium de-intercalation mechanism in this class of materials. Strong anisotropy is observed in the shifts of the lattice parameters during the first cycle. The in situ electrochemical measurement shows dynamically changing strain during the first electrochemical cycle that is explained by known lithium and transition metal (TM) migration mechanisms.

Original language	English
Pages (from-to)	44-49
Number of pages	6
Journal	Solid State Ionics
Volume	207
DOIs	https://doi.org/10.1016/j.ssi.2011.11.018
State	Published - Jan 18 2012

Funding

J.L Jones acknowledges the financial support from the National Science Foundation through award DMR-0746902 . Y.S. Meng acknowledges the financial support from the Northeastern Center for Chemical Energy Storage (NECCES) , an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC 0001294 . a-S/TEM analysis is carried out at the ORNL Shared Research Equipment (SHaRE) User Facility, which is sponsored by the Office of Basic Energy Sciences, U.S. Department of Energy. C. R. Fell acknowledges the financial support from Florida Energy System Consortium through University of Florida under Award Number 80859 . C. R. Fell would like to acknowledge the assistance from A. Emly and M. Yang and B. Xu.

Funders	Funder number
Florida Energy System Consortium
Office of Basic Energy Sciences	DE-SC 0001294
National Science Foundation	DMR-0746902
U.S. Department of Energy
Office of Science
University of Florida	80859

Keywords

Cathode
In situ X-ray diffraction
Lithium ion battery

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ssi.2011.11.018

Cite this

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abstract = "In situ X-ray diffraction patterns were collected using a laboratory X-ray diffractometer during the first electrochemical charge/discharge cycle of the layered lithium excess compound Li[Li 0.2Ni 0.2Mn 0.6]O 2 in the family of Li[Ni xLi 1/3 - 2x/3Mn 2/3 - x/3]O 2 (x = 1/5). Dynamic changes in peak positions, lattice parameters, and microstrain help to explain the lithium de-intercalation mechanism in this class of materials. Strong anisotropy is observed in the shifts of the lattice parameters during the first cycle. The in situ electrochemical measurement shows dynamically changing strain during the first electrochemical cycle that is explained by known lithium and transition metal (TM) migration mechanisms.",

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AU - Jones, Jacob L.

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AB - In situ X-ray diffraction patterns were collected using a laboratory X-ray diffractometer during the first electrochemical charge/discharge cycle of the layered lithium excess compound Li[Li 0.2Ni 0.2Mn 0.6]O 2 in the family of Li[Ni xLi 1/3 - 2x/3Mn 2/3 - x/3]O 2 (x = 1/5). Dynamic changes in peak positions, lattice parameters, and microstrain help to explain the lithium de-intercalation mechanism in this class of materials. Strong anisotropy is observed in the shifts of the lattice parameters during the first cycle. The in situ electrochemical measurement shows dynamically changing strain during the first electrochemical cycle that is explained by known lithium and transition metal (TM) migration mechanisms.

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