纳米炭材料应用于稳定锌离子电池中锌负极

Carbon nanomaterials for stabilizing zinc anodes in zinc-ion batteries

水系锌离子电池(ZIBs)由于价格低、安全性好、储能性能优异等优点,在电网和可穿戴设备中具有极大的前景。然而,锌离子电池的锌金属负极并不稳定,例如,锌负极上会形成锌枝晶,同时还会发生析氢反应和其他副反应。这些不稳定的因素阻碍了ZIBs的应用。最近,纳米炭材料因其独特的结构、优异的导电性和良好的稳定性成为优化锌负极的重要材料。这篇综述系统地概述了纳米炭材料用于稳定ZIBs中锌负极的最新进展。总结了纳米炭材料稳定锌负极的4种策略,包括使用炭材料作为基底、保护涂层、电解质添加剂和隔膜改性。最后,指出了纳米炭材料在稳定锌负极方面的挑战和前景。

Because of their low price,excellent safety and energy storage performance,aqueous zinc-ion batteries(ZIBs)have great potential for use in the power grid and in wearable devices.However,the Zn anode of ZIBs is not stable,for example,Zn dend-rite can be formed on the Zn anode accompanied by hydrogen evolution and side reactions,leading to its instability,which has been an obstacle to its use.Carbon nanomaterials have recently been used to improve the performance of Zn anodes due to their unique structure,excellent conductivity and good stability.This review summarizes this recent development for stabilizing zinc anodes.The carbon nanomaterials are used are as hosts,protective coating layers,electrolyte additives and modifiers in the separators to stabilize the Zn electrodes.The problems involved in doing this are presented,and some future developments are outlined.