电解质
材料科学
阴极
电池(电)
电极
化学工程
离子
铜
储能
锂离子电池
离解(化学)
无机化学
纳米技术
化学
物理化学
冶金
有机化学
热力学
功率(物理)
物理
工程类
作者
Yingyi Ding,Tianli Han,Zhongtao Wu,Yong Guan,Jun Hu,Chaoquan Hu,Yangchao Tian,Jinyun Liu
出处
期刊:ACS Nano
[American Chemical Society]
日期:2022-09-01
卷期号:16 (9): 15369-15381
被引量:5
标识
DOI:10.1021/acsnano.2c07174
摘要
Magnesium/lithium hybrid-ion batteries (MLHBs) combine the advantages of high safety and fast ionic kinetics, which enable them to be promising emerging energy-storage systems. Here, a high-performance MLHB using a modified all-phenyl complex with a lithium bis(trifluoromethanesulfonyl)imide electrolyte and a NiCo2S4 cathode on a copper current collector is developed. A reversible conversion involving a copper collector with NiCo2S4 efficiently avoids the electrolyte dissociation and diffusion difficulties of Mg2+ ions, enabling low polarization and fast redox, which is verified by X-ray absorption near edge structure analysis. Such combination affords the best MLHB among all those ever reported, with a reversible capacity of 204.7 mAh g–1 after 2600 cycles at 2.0 A g–1, and delivers an ultrahigh full electrode-basis energy density of 708 Wh kg–1. The developed MLHB also achieves good rate performance and temperature tolerance at −10 and 50 °C with a low electrolyte consumption. The hybrid-ion battery system presented here could inspire a broad set of engineering potentials for high-safety battery technologies and beyond.
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