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Published on: December 6, 2021
Silver Nanoparticle-Doped 3D Porous Carbon Nanofibers as Separator Coating for Stable Lithium Metal Anodes
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.
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