期刊
ADVANCED FUNCTIONAL MATERIALS
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202301554
关键词
3D Sb-based frameworks; sodiophilicity; sodium dendrites; sodium metal anodes; sodium metal batteries
A flexible 3D hollow porous carbon nanofiber framework embedded with Sb nanoparticles (Sb@HPCNF) is reported to enhance the safety and stability of sodium metal batteries (SMBs). The framework enables highly reversible Na plating-stripping cycles for over 550 hours at 5 mA cm(-2) and exhibits excellent high-rate performance. This study provides new insights for constructing functionalized 3D composite frameworks for next-generation high-safety and high-energy SMBs.
Sodium (Na) dendrites, as the ringleader for triggering safety concerns, have restricted the practical application of sodium metal batteries (SMBs). The fundamental reason is due to the high activity of Na metal anodes, which can continuously induce the interfacial side reactions and Na dendrites growth, resulting in rapid capacity deterioration, low Coulombic efficiency, and even internal short-circuit. In order to enhance the safety and stability of SMBs, a flexible 3D hollow porous carbon nanofiber framework embedded with Sb nanoparticles (Sb@HPCNF) is reported by integrating interface chemistry and structural engineering. The 3D Sb@HPCNF framework with gradient sodiophilicity can maintain highly reversible Na plating-stripping cycles at 5 mA cm(-2) for >550 h and possesses a low overpotential of 24 mV. In addition, the full-cells using Na3V2(PO4)(3) cathode and Sb@HPCNF-Na anode exhibit impressive long-term cycling stability and excellent high-rate performance. This study provides a new insight on constructing functionalized 3D composite framework with gradient sodiophilicity toward next-generation high-safety and high-energy SMBs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据