分离层状结构Ni_(2)P/C锂离子电池负极材料合成及电化学性能研究  

Synthesis and electrochemical properties of Ni_(2)P/C lithium-ion battery anode materials with separated layered structure

作　　者：夏思雨 刘嘉铭 李金辉[3] 刘智勤 巫祯 高岩 常德政 欧阳剑 XIA Siyu;LIU Jiaming;LI Jinhui;LIU Zhiqin;WU Zhen;GAO Yan;CHANG Dezheng;OUYANG Jian(Jiangxi Provincial Key Laboratory of Green and Low Carbon Metallurgy for Strategic Nonferrous Metals,Ganzhou 341000,China;School of Metallurgical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;School of Chemistry and Chemical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Research Center of Carbon Emission Reduction and Utilization Engineering Technology,Henan Academy of Sciences,Zhengzhou 450053,China;Henan Institute of Metallurgy Co.,Ltd.,Zhengzhou 450053,China)

机构地区：[1]战略有色金属绿色低碳冶金江西省重点实验室,赣州341000 [2]江西理工大学冶金工程学院,赣州341000 [3]江西理工大学化学化工学院,赣州341000 [4]河南省科学院碳减排与利用工程技术研究中心,郑州450053 [5]河南省冶金研究所有限责任公司,郑州450053

出　　处：《江西冶金》2025年第2期133-139,共7页Jiangxi Metallurgy

基　　金：国家自然科学基金项目(52064018);河南省二〇二四年科技发展计划项目(242102240016);有色金属资源高值开发与绿色低碳经济研究创业团队项目(20230112)。

摘　　要：过渡金属磷化物因具有理论比容量高、工作电势低、电极极化低以及热稳定性优异等优点而成为目前锂离子电池负极材料研究的热点。本研究以六亚甲基四胺(HMT)和六水合硝酸镍(Ni(NO_(3))_(2)·6H_(2)O)为原料,通过液相合成法制备了3种不同形貌的金属有机框架(MOF)Ni-HMT前驱体。利用低温固相磷化法将前驱体转化为Ni_(2)P/C负极材料。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)和X射线能谱仪(EDS)等检测手段对前驱体及Ni_(2)P/C复合材料的结构和形貌进行表征。考察了金属与有机配体的比例对Ni_(2)P/C复合负极材料电化学储锂性能的影响。结果表明,具有分离层状结构的Ni_(2)P/C-0.5材料的电化学性能显著优于其他材料,展现了其作为高性能锂离子电池负极材料的巨大应用潜力。Transition metal phosphide has become a hot spot in the research of anode materials for lithium-ion batteries because of its high theoretical specific capacity,low working potential,low electrode polarization and excellent thermal stability.In this study,three kinds of Ni-hexamethylenetetramine(HMT)precursors with different morphologies of metal-organic framework(MOF)were prepared by liquid phase synthesis with HMT and nickel nitrate hexahydrate(Ni(NO_(3))_(2)·6H_(2)O)as raw materials.The precursor was transformed into Ni_(2)P/C anode material by low-temperature solid-state phosphating.X-ray diffraction(XRD),scanning electron microscope(SEM)and energy dispersive X-ray spectroscopy(EDS)were used to characterize the structure and morphology of the precursor and Ni_(2)P/C composites.The effect of the ratio of metal to organic ligand on the electrochemical lithium storage performance of Ni_(2)P/C composite anode materials was investigated.The experimental results show that the electrochemical performance of Ni_(2)P/C-0.5 material with separated layered structure is significantly better than other materials,which shows its great application potential as a cathode material for high-performance lithium-ion batteries.

关 键 词：锂离子电池 金属有机框架 负极材料 磷化镍 

分 类 号：TD912[矿业工程—选矿] TF752[冶金工程—钢铁冶金]