材料科学
镓
阳极
电磁屏蔽
锌
电镀(地质)
离子
电偶阳极
无机化学
化学工程
冶金
复合材料
电极
阴极保护
物理化学
有机化学
化学
工程类
地球物理学
地质学
作者
Jin Cao,Yan Jin,Haiyang Wu,Yilei Yue,Shouxin Zhang,Ding Luo,Lulu Zhang,Jiaqian Qin,Xuelin Yang
标识
DOI:10.1002/aenm.202403175
摘要
Abstract The cost‐effectiveness and environmental benefits of aqueous zinc‐ion batteries (ZIBs) have attracted considerable attention. However, practical applications are hindered by side processes including dendritic growth and hydrogen evolution corrosion. Herein, gallium ions (Ga 3+ ) have been chosen as a multifunctional electrolyte additive to improve the reversibility of zinc‐ion batteries (ZIBs). Remarkably, Ga 3+ ions adhere to the anode surface, establishing a dynamic electrostatic shielding layer that modulates Zn 2+ deposition and prevents side reactions. Typically, Ga 3+ ions preferentially adsorb onto the (002) and (110) planes of Zn, facilitating preferential deposition on the (100) plane, resulting in a dendrites‐free zinc anode. Consequently, the Zn||Zn symmetrical cell with Ga 3+ ‐modified electrolyte demonstrates a prolonged lifespan of 4000 h, while the Zn||Ti asymmetric cell exhibits an impressive coulombic efficiency of 99.12% for zinc stripping and plating at 2 mA cm −2 . Additionally, the Zn||VO 2 cell maintains high capacity retention after 1500 cycles at 5 A g −1 . This work presents Ga 3+ ions as an electrolyte additive, facilitating the development of a durable dynamic electrostatic shielding effect and preferential (100) plane electroplating, ensuring zinc deposition free from dendrite formation. Such discoveries form a basis for future investigations into novel materials to propel advancements in metal battery technology.
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