铁镍二次电池负极材料的制备及其添加剂的研究  

Preparation of anode materials and study on their additives for nickel iron secondary batteries

作　　者：徐肖静 王晓函 陈彦早 杨少华[1] 孙杰[1] 李继龙 董华 XU Xiaojing;WANG Xiaohan;CHEN Yanzao;YANG Shaohua;SUN Jie;LI Jilong;DONG Hua(Shenyang Ligong University,Shenyang Liaoning 110159,China;Northwest Industries Group Co.,Ltd.,Xi’an Shaanxi 710043,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159 [2]西北工业集团有限公司,陕西西安710043

出　　处：《电源技术》2025年第4期852-858,共7页Chinese Journal of Power Sources

摘　　要：以FeC_(2)O_(4)·2H_(2)O为铁源,SnO_(2)为锡源,柠檬酸为碳源和还原剂,采用溶胶凝胶法制备了铁镍二次电池锡掺杂铁负极材料,探究不同柠檬酸含量对负极材料的影响,考察了NiS和FeS两种硫化物添加剂对所合成负极材料性能的影响,并采用XRD、SEM、CV和EIS对合成材料的结构、形貌和电化学性能进行表征。结果表明:柠檬酸高温烧结成碳为负极材料提供主要的碳源,且金属离子与柠檬酸摩尔比为1∶1.5时,制备的铁比容量达523 mAh/g。适宜比例硫化物的添加均能提升负极材料比容量,其中添加5%FeS的负极材料放电比容量达到582 mAh/g,放电比容量最高,并且具有良好的循环稳定性。In this paper,Tin doped iron anode materials for iron nickel secondary batteries were prepared by the sol gel method using FeC_(2)O_(4)·2H_(2)O as the iron source,SnO_(2) as the tin source,citric acid as the carbon source and reducing agent.The influence of different citric acid contents on anode materials was explored,and the effects of two sulfide additives,NiS and FeS,on the performance of the synthesized anode were investigated.XRD,SEM,CV and EIS were used to characterize the structure,morphology,and electrochemical properties of the synthesized materials.The results show that high temperature sintering of citric acid into carbon provides the main carbon source for the negative electrode material,and when the ratio of metal ions to citric acid was 1∶1.5,the iron specific capacity prepared reaches 523 mAh/g.The addition of appropriate proportions of sulfides can enhance the specific capacity of anode materials.Among them,the anode material with 5%FeS added has a discharge specific capacity of 582 mAh/g,the highest discharge specific capacity,and good cycling stability.

关 键 词：铁负极 柠檬酸 硫化物 

分 类 号：TM912[电气工程—电力电子与电力传动]