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Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells
Published on: February 1, 2016
Anion-tethered interface engineering enabling dendrite-free lithium metal anodes
Lanlan Zuo1, Xu Fan1, Hang Yu1
1Department of Materials Science and Engineering, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, Hunan 410000, China. chenyufang@nudt.edu.cn.
Abstract:
A functionalized fiber separator with an anion-sieving effect facilitates rapid Li+ transfer and guides ordered Li deposition. The in situ integration of metal organic frameworks (MOFs) with polyacrylonitrile (PAN) fibers effectively prevents MOF agglomeration, and reduces the high reactivity of -CN groups with Li anodes. Real-time visualization technology confirms uniform Li deposition behavior. The Li‖Li symmetric cell demonstrates exceptional plating-stripping reversibility at 10 mA cm-2. The Li‖LiNi0.8Co0.1Mn0.1O2 cell exhibits 17% higher capacity retention after 250 cycles than commercial polyolefin separator. This in situ chemical modification enables dendrite-free Li metal batteries through separator engineering.
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