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https://hdl.handle.net/2440/133523
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Type: | Journal article |
Title: | Phosphorus-Based Alloy Materials for Advanced Potassium-Ion Battery Anode |
Author: | Zhang, W. Mao, J. Li, S. Chen, Z. Guo, Z. |
Citation: | Journal of the American Chemical Society, 2017; 139(9):3316-3319 |
Publisher: | ACS Publications |
Issue Date: | 2017 |
ISSN: | 0002-7863 1520-5126 |
Statement of Responsibility: | Wenchao Zhang, Jianfeng Mao, Sean Li, Zhixin Chen, Zaiping Guo |
Abstract: | Potassium-ion batteries (PIBs) are interesting as one of the alternative metal-ion battery systems to lithium-ion batteries (LIBs) due to the abundance and low cost of potassium. We have herein investigated Sn4P3/C composite as a novel anode material for PIBs. The electrode delivered a reversible capacity of 384.8 mA h g−1 at 50 mA g−1 and a good rate capability of 221.9 mA h g−1 , even at 1 A g−1 . Its electrochemical performance is better than any anode material reported so far for PIBs. It was also found that the Sn4P3/C electrode displays a discharge potential plateau of 0.1 V in PIBs, slightly higher than for sodium-ion batteries (SIBs) (0.01 V), and well above the plating potential of metal. This diminishes the formation of dendrites during cycling, and thus Sn4P3 is a relatively safe anode material, especially for application in large-scale energy storage, where large amounts of electrode materials are used. Furthermore, a possible reaction mechanism of the Sn4P3/C composite as PIB anode is proposed. This work may open up a new avenue for further development of alloy-based anodes with high capacity and long cycle life for PIBs. |
Keywords: | Potassium; Electrodes; Physical and chemical processes; Anode materials; Batteries |
Rights: | © 2017 American Chemical Society |
DOI: | 10.1021/jacs.6b12185 |
Grant ID: | http://purl.org/au-research/grants/arc/DP170102406 |
Published version: | http://dx.doi.org/10.1021/jacs.6b12185 |
Appears in Collections: | Chemistry publications |
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