Bi_(2)S_(3)/石墨烯负极材料的制备及其储钠性能研究  

The preparation and sodium storage properties of Bi_(2)S_(3)/graphene anode materials

作　　者：张杰[1] 杨观华 王旭[1] 张志国[1] 李翼宏 覃现灵 郝虎威 ZHANG Jie;YANG Guanhua;WANG Xu;ZHANG Zhiguo;LI Yihong;QIN Xianling;HAO Huwei(School of Mechanical and Automotive Engineering,Guangxi University of Science and Technology,Liuzhou 545616,China;Guangxi Key Laboratory of Low Carbon Energy Material,Guangxi Normal University,Guilin 541004,China)

机构地区：[1]广西科技大学机械与汽车工程学院,广西柳州545616 [2]广西低碳能源材料重点实验室(广西师范大学),广西桂林541004

出　　处：《广西科技大学学报》2025年第2期85-92,100,共9页Journal of Guangxi University of Science and Technology

基　　金：广西自然科学基金面上项目(2020GXNSFAA297019);广西科技大学研究生教育创新计划项目(GKYC202317);广西低碳能源材料重点实验室经费(2023GKLLCEM0104);广西汽车零部件与整车技术重点实验室经费(2022GKLACVTZZ05)资助。

摘　　要：钠离子电池因钠储量丰富和成本费用低,有望取代锂离子电池成为新型储能电池。但由于缺少高性能的负极材料,钠离子电池的商业应用受到严重制约,导致其发展远远滞后于锂离子电池。硫化铋(Bi_(2)S_(3))因具有较高的比容量、对环境友好和成本低等优势受到了研究者们的广泛关注。将石墨烯与Bi_(2)S_(3)进行水热反应,获得具有优异电化学性能的Bi_(2)S_(3)/NSGr负极材料。与Bi_(2)S_(3)相比,Bi_(2)S_(3)/NSGr的电化学性能提升比较理想,拥有更小的阻抗值(57Ω)、更大的钠离子扩散速率(1.74×10^(-13)cm2/s),在0.5 A/g的电流密度下循环100圈后容量稳定在370 mA·h/g。结果表明,引入石墨烯对提升Bi_(2)S_(3)材料的循环稳定性和导电性能具有可观的效果,并能够提升材料的整体性能,为开发高性能的Bi_(2)S_(3)基负极材料提供研究思路。Sodium-ion batteries are considered to be one of the new energy storage devices that are likely to replace lithium-ion batteries because of their abundant sodium reserves and low cost.However,due to the lack of high-performance anode materials,the commercial application of sodium ion batteries has been severely limited,resulting in the fact that its development speed is far lagging behind that of lithium-ion batteries.Bismuth sulfide(Bi_(2)S_(3))has received widespread attention from researchers due to its advantages of high specific capacity,environmental friendliness and low cost.In this paper,Bi_(2)S_(3)/NSGr anode materials with excellent electrochemical properties were obtained by hydrothermal reaction of graphene with Bi_(2)S_(3).Compared with Bi_(2)S_(3),Bi_(2)S_(3)/NSGr has a better electrochemical performance,with a smaller impedance value of 57Ω,a larger sodium ion diffusion rate of 1.74×10^(-13)cm2/s,and a stable capacity of 370 mA·h/g after 100 cycles at a current density of 0.5 A/g.The results show that the introduction of graphene has a considerable effect on improving the cycle stability and conductivity of Bi_(2)S_(3)material,and can improve the overall performance of the material,and provide research ideas and reference value for the development of high-performance Bi_(2)S_(3)-based anode electrode materials.

关 键 词：硫化铋(Bi_(2)S_(3)) 石墨烯 负极材料 钠离子电池 

分 类 号：TM912[电气工程—电力电子与电力传动]