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Updated: Jul 17, 2025

Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Zinc-dual-halide complexes suppressing polyhalide formation for rechargeable aqueous zinc-halogen batteries
Wanlong Wu1, Xiaoyu Yin1, Sibo Wang1
1Department of Chemistry, Northeastern University, Shenyang 110819, China. sunxiaoqi@mail.neu.edu.cn.
Abstract:
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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