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Silver Nanoparticle-Doped 3D Porous Carbon Nanofibers as Separator Coating for Stable Lithium Metal Anodes

By Min Liu (45756), Nanping Deng (5052794), Jingge Ju (5052815), Liyuan Wang (795570), Gang Wang (36685), Yali Ma (1444522), Weimin Kang (5052803) and Jing Yan (312090)

Abstract

The ever-increasing demand for electric devices and vehicles prompts the fast development of energy storage systems. Lithium metal is thought to be the most promising electrode for high-performance batteries. However, the growth of lithium dendrites impedes the industrial production of lithium metal batteries. Herein, an effective approach is proposed by coating a commercial separator with three-dimensional porous carbon fibers loaded with silver nanoparticles (Ag-PCNFs), which can be regarded as a subsidiary of the electrode to improve the cycling performance of lithium metal batteries. The porous structure with a high specific surface area endows the electrode with a high lithium-loading capacity. The silver nanoparticles provide the electrode pro-Li property and excellent electrical conductivity, which are beneficial for the electrochemical reaction and reduce the local current density to attain a dendrite-free electrode. Electrochemical cycling performance of symmetric Li–Li batteries shows that Ag-PCNF coating can hinder dendrite growth and enhance the cycling stability, indicating that Ag-PCNFs acting as host materials can effectively guide the deposition of Li and solve the dendrite problem

Topics: Medicine, Neuroscience, Physiology, Sociology, Developmental Biology, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Electrochemical cycling performance, Silver Nanoparticle-Doped 3 D Porous Carbon Nanofibers, coating, electrode pro-Li property, energy storage systems, silver nanoparticles, Stable Lithium Metal Anodes, Ag-PCNF, dendrite, lithium metal batteries
Year: 2019
DOI identifier: 10.1021/acsami.9b04122.s001
OAI identifier: oai:figshare.com:article/8082476
Provided by: FigShare
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