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Published in: Journal of Materials Science 5/2019

12-11-2018 | Energy materials

Preparing enhanced electrochemical performances Fe2O3-coated LiNi1/3Co1/3Mn1/3O2 cathode materials by thermal decomposition of iron citrate

Authors: Yike Lei, Yonghu Li, Hongyu Jiang, Chunyan Lai

Published in: Journal of Materials Science | Issue 5/2019

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Abstract

The Fe2O3-coated LiNi1/3Co1/3Mn1/3O2 (NCM111-Fe) was successfully prepared via a co-precipitation reaction assisted by thermal decomposition of iron citrate. The crystal structure, morphologies and element condition of the samples were researched by XRD, SEM, TEM and XPS. The NCM111 was covered with Fe2O3-layer after thermal decomposition of iron citrate, and the existence of Fe2O3 layer did not change the pristine crystal structure of NCM111. Between 3.0 and 4.8 V, the NCM111-Fe delivered an initial capacity of 192.5 mA h g−1 at 0.1 C and 86.7% of the capacity remained after 100 cycles. In contrast, NCM111 exhibited an initial capacity of 187 mA h g−1 and only remained 63.5% after 100 cycles. The results indicated that the NCM111-Fe displayed weaker polarization, smaller charge-transfer resistance and better electrochemistry performance than the pristine sample.

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Literature
Metadata
Title
Preparing enhanced electrochemical performances Fe2O3-coated LiNi1/3Co1/3Mn1/3O2 cathode materials by thermal decomposition of iron citrate
Authors
Yike Lei
Yonghu Li
Hongyu Jiang
Chunyan Lai
Publication date
12-11-2018
Publisher
Springer US
Published in
Journal of Materials Science / Issue 5/2019
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-018-3126-2

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