Rechargeable Aluminum-Ion Battery Based on MoS2 Microsphere Cathode
Rechargeable Aluminum-Ion Battery Based on MoS2 Microsphere Cathode
复制标题
基于MoS2微球正极的可充电铝离子电池
DOI：
10.1021/acsami.8b00100
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发表时间：
2018-03-21
影响因子：
9.5
通讯作者：
Kang, Feiyu
中科院分区：
文献类型：
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作者：
Li, Zhanyu;Niu, Bangbang;Kang, Feiyu
近年来，基于离子液体电解质的可充电铝离子电池因其具有三电子电化学反应、资源丰富、安全等优点而受到广泛探索。本文首次制备了由二硫化钼微球阴极、铝阳极和离子液体电解质组成的可充电铝离子电池。结果表明，在电化学反应过程中，Al3+嵌入到MoS2中，但两者在电极材料界面和内部的存储机制有较大差异。这一结果得到了非原位x射线光电子能谱和x射线衍射刻蚀技术的证实。同时，该铝离子电池也表现出优异的电化学性能，在电流密度为20 mA g（-1）时的放电比容量为253.6 mA h g(-1)，在电流密度为40 mA g（-1）时，循环100次后的放电容量为66.7 mA h g（-1）。这将为铝离子电池的商业化奠定坚实的基础。
In recent years, a rechargeable aluminum-ion battery based on ionic liquid electrolyte is being extensively explored due to three-electron electrochemical reactions, rich resources, and safety. Herein, a rechargeable Al-ion battery composed of MoS2 microsphere cathode, aluminum anode, and ionic liquid electrolyte has been fabricated for the first time. It can be found that Al3+ intercalates into the MoS2 during the electrochemical reaction, whereas the storage mechanisms of the electrode material interface and internal are quite different. This result is confirmed by ex situ X-ray photoelectron spectroscopy and X-ray diffraction etching techniques. Meanwhile, this aluminum-ion battery also shows excellent electrochemical performance, such as a discharge specific capacity of 253.6 mA h g(-1) at a current density of 20 mA g(-1) and a discharge capacity of 66.7 mA h g(-1) at a current density of 40 mA g(-1) after 100 cycles. This will lay a solid foundation for the commercialization of aluminum-ion batteries.