Boron/phosphorus co-doped nitrogen-rich carbon nanofiber with flexible anode for robust sodium-ion battery  

作　　者：Jiaojiao Liang Youming Peng Zhichao Xu Yufei Wang Menglong Liu Xin Liu Di Huang Yuehua Wei Zengxi Wei 

机构地区：[1]Hunan University of Technology,Zhuzhou 412008,China [2]School of Physics and Optoelectronics,Xiangtan University,Xiangtan 411105,China [3]Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China

出　　处：《Chinese Chemical Letters》2025年第1期585-590,共6页中国化学快报(英文版)

基　　金：supported by Natural Science Foundation of China(No.6230031623);the Natural Science Foundation of Hunan Province(No.2024JJ5127);the Education Department of Hunan Province(No.22B0580);the Scientific Research and Innovation Foundation of Hunan University of Technology(No.CX2317);the Innovation and Entrepreneurship Training Project for College Students(No.S202311535061)。

摘　　要：Flexible energy storage devices have been paid much attention and adapts to apply in various fields.Benefiting from the active sites of boron(B)and phosphorus(P)doping materials,co-doped carbon materials are widely used in energy storage devices for the enhanced electrochemical performance.Herein,B and P co-doped flexible carbon nanofibers with nitrogen-rich(B-P/NC)are investigated with electro-spinning for sodium-ion battery.The flexible of binderless B-P/NC with annealing of 600℃(B-P/NC-600)exhibits the remarkable performance for the robust capacity of 200 mAh/g at 0.1 A/g after 500 cycles and a durable reversible capacity of 160 m Ah/g even at 1 A/g after 12,000 cycles,exhibiting the equally commendable stability of flexible B-P/NC-600.In addition,B-P/NC-600 delivers the reversible capacity of265 m Ah/g with the test temperature of 60℃.More importantly,the flexible B-P/NC-600 is fabricated as anode for the whole battery,delivering the capacity of 90 m Ah/g at 1 A/g after 200 cycles.Meanwhile,theoretical calculation further verified that boron and phosphorus co-doping can improve the adsorption capacity of nitrogen carbon materials.The favorable performance of flexible B-P/NC-600 can be ascribed to the nitrogen-rich carbon nanofibers with three-dimensional network matrix for the more active site of boron and phosphorus co-doping.Our work paves the way for the improvement of flexible anodes and wide-operating temperature of sodium-ion batteries by doping approach of much heteroatom.

关 键 词：CO-DOPED FLEXIBLE Carbon nanofibers Durable Sodium-ion batteries 

分 类 号：TM912[电气工程—电力电子与电力传动] O646.542[理学—物理化学]