卤化物
锌
法拉第效率
卤素
化学
溶解
水溶液
电解质
无机化学
有机化学
电极
物理化学
烷基
作者
Wanlong Wu,Xiaofei Yin,Sibo Wang,Quanwei Jiang,Hua‐Yu Shi,Xiaoqi Sun
摘要
Aqueous zinc-halogen batteries suffer from poor coulombic efficiency and short cycle life owing to the formation and dissolution of polyhalides in electrolytes. Herein, we apply a zinc-dual-halide complex strategy to confine free halides and suppress polyhalide formation. The high stabilities of zinc-dual-halide complexes are identified to be essential for effective confinement. The resulting Zn-Br2 and Zn-I2 cells deliver excellent rate capability and cycling stability, as well as high coulombic efficiency and energy efficiency.
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