Laser-induced Zinc Metal Battery Anodes with Ultra-long Cycling Performance
Laser-induced Zinc Metal Battery Anodes with Ultra-long Cycling Performance
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DOI：
10.1109/3m-nano58613.2023.10305360
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发表时间：
2023-07
期刊：
影响因子：
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通讯作者：
Zhen Yang;Bingyu Li;Hui-jun Xiao;He Zhang;Chengjuan Yang;Yanling Tian
中科院分区：
文献类型：
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作者：
Zhen Yang;Bingyu Li;Hui-jun Xiao;He Zhang;Chengjuan Yang;Yanling Tian
锌离子电池由于其固有的高安全性、低成本和相对高的理论能量密度而显示出作为便携式和电网规模应用的有利选择的巨大潜力。然而，由于在充电-放电过程中严重的枝晶形成，扁平锌金属阳极不能够具有长循环性能。在这项研究中，我们采用纳秒激光改性锌表面形貌和表面化学，以减轻枝晶生长。结果表明，激光诱导锌箔（LZF）表面具有超亲水性，表面具有微观结构和一层ZnO涂层。对称电池和半电池研究表明，LZF电极具有较低的成核过电位和稳定的镀/剥行为。活性炭负极锌离子电池性能优异，在2A/g电流下可稳定工作20000次，在10A/g电流下可稳定工作50000次，库仑效率接近100%。本文为激光制备高性能锌离子电池锌阳极提供了新的选择。
Zinc ion batteries show great potential as favorable options for both portable and grid-scale applications due to their inherently high safety, low cost, and relatively high theoretical energy density. However, the flat zinc metal anodes are not capable of long cycling performance owing to severe dendrites formation during the charge-discharge process. In this study, we employed nanosecond laser to modify zinc surface morphology and surface chemistry in order to alleviate the dendrites growth. The results demonstrate that the laser-induced zinc foil (LZF) surfaces show super-hydrophilic property with microstructures and a layer of ZnO coating. The symmetric cells and half-cells investigations indicate that the LZF electrode possesses lower nucleation overpotential and stable plating/striping behavior. Moreover, excellent zinc ion battery performance is achieved with activated carbon (AC) cathode, stably working for 20000 cycles at 2 A/g and 50000 cycles at 10 A/g with the Coulombic efficiency almost 100%. This paper offers new option for laser fabrication of high-performance zinc anodes for Zn-ion batteries.