Low-temperature synthesized Li4Mn5O12-like cathode with hybrid cation- and anion-redox capacities
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c9cc02006c.pdf
Description
Published version
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2.23 MB
Format
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Checksum (MD5)
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Author(s)
Liu, Yang
Liu, Guang
Xu, Hui
Zheng, Yuheng
Huang, Yunhui
Li, Sa
Li, Ju
Date Issued
July 2019
Journal
Chemical Communications
Publisher
Royal Society of Chemistry (RSC)
Citation
Liu, Yang, et al., "Low-temperature synthesized Li4Mn5O12-like cathode with hybrid cation- and anion-redox capacities." Chemical Communications 56 (2019): no. 8118 doi 10.1039/C9CC02006C ©2019 Author(s)
Version
Final published version
Abstract
The Li-rich spinel Li4Mn5O12 (Li(Mn5/3Li1/3)O4) historically only shows a reversible cation-redox reaction, with a theoretical capacity of 135.5 mA h g-1. However, we found that a simple 400 °C solid-state synthesis method gives a Li4Mn5O12-like nanoparticulate cathode that yields significant reversible hybrid cation- and anion-redox capacities. A high specific capacity of 212 mA h g-1 was achieved. The reversible anion-redox contribution is attributed to the tiny particle size (<10 nm), which facilitates electron tunneling, and a possible random solid-solution in the Li(Mn5/3Li1/3)O4 lattice due to the low synthesis temperature. ©2019
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Creative Commons Attribution Noncommercial 3.0 unported license
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DOI of Published Version
https://doi.org/10.1039/C9CC02006C
