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Low-temperature synthesized Li4Mn5O12-like cathode with hybrid cation- and anion-redox capacities

Author(s)
Liu, Yang; Liu, Guang; Xu, Hui; Zheng, Yuheng; Huang, Yunhui; Li, Sa; Li, Ju; ... Show more Show less
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Creative Commons Attribution Noncommercial 3.0 unported license https://creativecommons.org/licenses/by-nc/3.0/
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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
Date issued
2019-07
URI
https://hdl.handle.net/1721.1/124430
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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
ISSN
1364-548X
1359-7345

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