Roll-to-roll fabrication of lithiophilic Sn-modified Cu mesh via chemical tin plating approach for long-cycling lithium metal batteries  

作　　者：Ke-Xin Liu Ran Tan Zhong Zheng Rui-Rui Zhao BurakÜlgüt Xin-Ping Ai Jiang-Feng Qian 

机构地区：[1]Hubei Key Laboratory of Electrochemical Power Sources,College of Chemistry and Molecular Sciences,Wuhan University,Wuhan,430072,China [2]Research Institute,EVE Battery Corporation Limited,Huizhou,516006,China [3]Department of Chemistry,Bilkent University,Ankara,06800,Turkey

出　　处：《Rare Metals》2025年第1期81-94,共14页稀有金属(英文版)

基　　金：supported by the Key Research and Development Program of Hubei Province,China(No.2023BAB108);the Natural Science Foundation of Hubei Province,China(No.2022CFB096);the National Natural Science Foundation of China(Nos.22279093 and 22075216)。

摘　　要：Lithium metal,with its exceptionally high theoretical capacity,emerges as the optimal anode choice for high-energy-density rechargeable batteries.Nevertheless,the practical application of lithium metal batteries(LMBs)is constrained by issues such as lithium dendrite growth and low Coulombic efficiency(CE).Herein,a roll-to-roll approach is adopted to prepare meter-scale,lithiophilic Sn-modified Cu mesh(Sn@Cu mesh)as the current collector for long-cycle lithium metal batteries.The two-dimensional(2D)nucleation mechanism on Sn@Cu mesh electrodes promotes a uniform Li flux,facilitating the deposition of Li metal in a large granular morphology.Simultaneously,experimental and computational analyses revealed that the distribution of the electric field in the Cu mesh skeleton induces Li inward growth,thereby generating a uniform,dense composite Li anode.Moreover,the Sn@Cu mesh-Li symmetrical cell demonstrates stable cycling for over 2000 h with an ultra-low 10 mV voltage polarization.In Li||Cu half-cells,the Sn@Cu mesh electrode demonstrates stable cycling for 100 cycles at a high areal capacity of 5 mAh·cm-2,achieving a CE of 99.2%.This study introduces a simple and large-scale approach for the production of lithiophilic three-dimensional(3D)current collectors,providing more possibilities for the scalable application of Li metal batteries.

关 键 词：Roll-to-roll fabrication Lithiophilic Sn modification Cu mesh Li nucleation and growth Lithium metal batteries 

分 类 号：TM9[电气工程—电力电子与电力传动]