The Effect of Anion-sublattice Structure on the Displacement Reaction in Copper Sulfide Cathodes of Rechargeable Magnesium Batteries
The Effect of Anion-sublattice Structure on the Displacement Reaction in Copper Sulfide Cathodes of Rechargeable Magnesium Batteries
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DOI：
10.1246/cl.170503
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发表时间：
2017-07
影响因子：
1.6
通讯作者：
Y. Tashiro;K. Taniguchi;H. Miyasaka
中科院分区：
文献类型：
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作者：
Y. Tashiro;K. Taniguchi;H. Miyasaka
具有不同S²⁻亚晶格结构（例如立方蓝辉铜矿和六方辉铜矿）的硫化铜（Cu₂₋ₓS，其中x表示位置缺陷）已被作为镁（Mg）电池的阴极材料进行研究。只有使用立方蓝辉铜矿阴极才能实现可充电性能；然而，使用六方辉铜矿阴极会产生较差的可充电性能。立方蓝辉铜矿中面心立方的S²⁻亚晶格能够使Cu⁺和Mg²⁺离子相互置换而不会导致晶格坍塌，这可能在提高可充电阴极性能方面起关键作用。
Copper sulfides (Cu2−xS, where x denotes position defects) with different structures of the S2− sublattice, such as cubic digenite and hexagonal chalcocite, have been investigated as cathode materials for magnesium (Mg) batteries. Rechargeable performance is only achieved using a cubic digenite cathode; however, using hexagonal chalcocite cathode yields poor rechargeable performance. The face-centered cubic S2− sublattice in cubic digenite, which enables Cu+ and Mg2+ ions to be displaced from each other without causing the lattice to collapse, could play a key role in improving the performance of rechargeable cathodes.