Ultra‐High Proportion of Grain Boundaries in Zinc Metal Anode Spontaneously Inhibiting Dendrites Growth

• DOI: 10.1002/ange.202406292
• Publication Date: 2024-05-23T15:44:02Z
• Authors: Sitian Lian; Zhijun Cai; Mengyu Yan; Congli Sun; Nianyao Chai; Bomian Zhang; Kesong Yu; Ming Xu; Jiexin Zhu; Xuelei Pan; Yuhang Dai; Jiazhao Huang; Bo Mai; Ling Qin; Wenchao Shi; Qiqi Xin; Xiangyu Chen; Kai Fu; Qinyou An; Qiang Yu; Liang Zhou; Wen Luo; Kangning Zhao; Xuewen Wang; Liqiang Mai
• Keywords: Dendrite (mathematics)

Abstract Aqueous Zn‐ion batteries are an attractive electrochemical energy storage solution for their budget and safe properties. However, dendrites uncontrolled side reactions in anodes detract the cycle life density of batteries. Grain boundaries metals generally considered as source above problems but we present a diverse result. This study introduces ultra‐high proportion grain on zinc electrodes through femtosecond laser bombardment to enhance stability metal/electrolyte interface. The promotes homogenization growth potential, achieve uniform nucleation growth, thereby suppressing dendrite formation. Additionally, abundant active sites mitigate during process. Consequently, 15 μm Fs−Zn||MnO 2 pouch cell achieves 249.4 Wh kg −1 operates over 60 cycles at depth‐of‐discharge 23 %. recognition favorable influence exerted by UP‐GBs paves new way other metal