文献类型：期刊文献

英文题名：High Performance Sodium Ion Anodes Based on Sn4P3 Encapsulated within Amphiphilic Graphene Tubes

作者：Tan, Xinyi[1];Mo, Runwei[2];Xu, Jinhui[1];Li, Xinru[1];Yin, Qingyang[1];Shen, Li[1];Lu, Yunfeng[1]

机构：[1]Univ Calif Los Angeles, Chem & Biomol Engn, Los Angeles, CA 90095 USA;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200030, Peoples R China

年份：2022

卷号：12

期号：2

外文期刊名：ADVANCED ENERGY MATERIALS

收录：;EI(收录号：20215011322687);WOS:【SCI-EXPANDED(收录号:WOS:000728992400001)】；

基金：The authors acknowledge the funding supports from the UCLA-ENN Center for Nanomedicine and Energy Conversion, Shanghai Pujiang Program (20PJ1402500) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：amphiphilic graphene tubes; sodium-ion batteries; tin phosphide anodes

摘要：High-performance sodium-ion anode composites are synthesized through confined growth Sn4P3 nanoparticles within amphiphilic graphene tubes, which provide mechanical robustness, the ability to confine Sn4P3 particles with their highly conductive frameworks, and the capability to accommodate the volume change of the particles during cycling. This unique structure endows a sodium-ion anode with high reversible capacity (821 mA h g(-1)), excellent rate capability (326 mA h g(-1) at 20 A g(-1)), and cycling stability (>90% reversible capacity retention after 500 cycles). This strategy can be extended to other conversion- and alloying-type materials that experience dramatic volume change during charging and discharging.