Three-Dimensional Hierarchical Ternary Nanostructures Bismuth/Polypyrrole/CNTs for High Performance Potassium-lon Battery Anodes

作     者：Wenming Zhang Xiaoyu Chen Haoshan Xu Yiqun Liu Xiaohui Zhao Zisheng Zhang Ling Li Wenming Zhang;Xiaoyu Chen;Haoshan Xu;Yiqun Liu;Xiaohui Zhao;Zisheng Zhang;Ling Li

作者机构：National-Local Joint Engineering Laboratory of New Energy Photoelectric DevicesCollege of Physics Science and TechnologyHebei UniversityBaodingHebei 071002China 

出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)

年 卷 期：2022年第40卷第13期

页      面：1585-1591页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 08[工学] 070205[理学-凝聚态物理] 0703[理学-化学] 0702[理学-物理学] 

基　　金：We gratefully acknowledge the financial support from the following sources:the National Natural Science Foundation of China(NSFC)(Grants 51772073,51762013) the Key Project of Hebei Natural Science Foundation(E2020201030) the Beijing-Tianjin-Hebei Collaborative Innovation Community Construction Project(21344301D) the Second Batch of Young Talent of Hebei Province(Nos.70280016160250,70280011808) the Key Fund in Hebei Province Department of Education China(ZD2021014) the Central Government Guide Local Funding Projects for Scientific and Technological Development(216Z4404G) the Graduate Innovation Fund Project of Hebei University(HBU2021ss071). 

主　　题：Bismuth Nanostructures Conducting materials Potassium ion battery Energy storage 

摘      要：In recent years,the anode materials of bismuth(Bi)-based potassium ion batteries with high theoretical capacity and suitable potassium ion insertion potential have attracted extensive attention.However,due to the volume expansion of Bi,the performance of Bi-based anode materials is not ideal during potassium ion(de)intercalation.In order to solve these problems,we report a three-dimensional(3D)ternary bismuth nanoparticles/conductive polymers/carbon nanotubes(Bi/PPy/CNT)hybrid anode material for K-ion batteries.At a current density of 100 mA·g^(-1),its reversible capacity reaches 302 mAh·g^(-1) after 200 cycles,while it reaches 195.7 mAh·g^(-1) after 600 cycles at 1 A·g^(-1).Its excellent performance is attributed to the hydrogel network which provides a range of electron transport networks and high porosity.Carbon nanotubes are used as electron enhancers to reduce the volume expansion of Bi particles during the reaction.This study provides a prerequisite for expanding the application of 3D ternary materials.