Novel K3V2(PO4)3/C Bundled Nanowires as Superior Sodium-Ion Battery Electrode with Ultrahigh Cycling Stability

作者: Xuanpeng Wang , Chaojiang Niu , Jiashen Meng , Ping Hu , Xiaoming Xu

DOI: 10.1002/AENM.201500716

关键词:

摘要: Sodium-ion battery has captured much attention due to the abundant sodium resources and potentially low cost. However, it suffers from poor cycling stability diffusion coefficient, which seriously limit its widespread application. Here, K3V2(PO4)3/C bundled nanowires are fabricated usinga facile organic acid-assisted method. With a highly stable framework, nanoporous structure, conductive carbon coating, manifest excellent electrochemical performances in sodium-ion battery. A capacity of 119 mAh g−1 can be achieved at 100 mA g−1. Even high current density 2000 g−1, 96.0% retained after charge–discharge cycles. Comparing with blocks, show significantly improved stability. This work provides effective approach enhance performance batteries.

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