Sb_(2)S_(3)/石墨烯负极材料的制备及其储钠性能研究  

Research on the preparation and sodium storage properties of Sb_(2)S_(3)/graphene anode materials

作　　者：王旭[1] 杨观华 李翼宏[1] 张志国 张杰 WANG Xu;YANG Guanhua;LI Yihong;ZHANG Zhiguo;ZHANG Jie(School of Mechanical and Automotive Engineering,Guangxi University of Science and Technology,Liuzhou 545616,China;Guangxi Key Laboratory of Low Carbon Energy Materials,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]广西师范大学广西低碳能源材料重点实验室,广西桂林541004

出　　处：《广西科技大学学报》2024年第1期106-112,共7页Journal of Guangxi University of Science and Technology

基　　金：广西自然科学基金青年基金项目(2019GXNSFBA245099);广西自然科学基金面上项目(2020GXNSFAA297019);广西低碳能源材料重点实验室项目(2020GKLLCEM01)资助。

摘　　要：钠离子电池(sodium-ion batteries,SIBs)具有成本低的潜在优势,有望成为替代锂离子电池(lithium ion batteries,LIBs)的储能设备。为提升钠离子电池的性能,开发出适应钠离子脱嵌的负极材料尤为重要。硫化锑(Sb_(2)S_(3))因其理论比容量高被认为是较好的钠离子电池负极材料。本文使用简单水热法将Sb_(2)S_(3)与石墨烯复合,制备Sb_(2)S_(3)/石墨烯复合材料(Sb_(2)S_(3)/Gr)。结果表明:Sb_(2)S_(3)/Gr作为钠离子电池负极时,不仅表现出良好的电导率(3.5×10~(-3)S/cm)和钠离子扩散速率(4.853×10~(-13)cm~2/s),而且在0.5 A/g的电流密度下,首圈库伦效率为76.27%,经150次循环后的比容量稳定在488 m A·h/g,表现出较高的比容量。Sb_(2)S_(3)/Gr复合材料表现出了极大的应用潜力,为高性能钠离子电池负极材料的研发提供了一定的参考价值。Sodium-ion batteries(SIBs)have the potential advantage of low cost and hold promise as an alternative to lithium-ion batteries(LIBs)for energy storage devices.It is particularly important to develop anode materials that are adapted to sodium ion insertion and extraction so as to enhance the performance of sodium-ion batteries.And antimony sulfide(Sb_(2)S_(3))is considered to be an extremely promising anode material for sodium-ion batteries due to its high theoretical specific capacity.In this paper,Sb_(2)S_(3)/graphene composites(Sb_(2)S_(3)/Gr)were prepared by compounding Sb_(2)S_(3) with graphene using a simple hydrothermal method.The results show that Sb_(2)S_(3)/Gr not only exhibited good conductivity(3.5×10-3 S/cm)and sodium ion diffusion rate(4.853×10-13 cm2/s)when used as the negative electrode of sodium-ion batteries,but also had a first-turn Coulomb efficiency of 76.27%at a current density of 0.5 A/g and a stable specific capacity after 150 cycles at 488 mA·h/g,which also exhibited a high specific capacity.The Sb_(2)S_(3)/Gr composites show great potential for application and provide a certain reference value for the development of anode materials for high-performance sodium-ion batteries.

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

分 类 号：TB33[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]