【作者】 吴平； 唐亚文； 周益明； 陆天虹；

【Author】 WU Ping;TANG Yawen;ZHOU Yiming;LU Tianhong;Jiangsu Key Laboratory of New Power Batteries,Jiangsu Collaborative Innovation Center of Biomedical Functional Materials,School of Chemistry and Materials Science,Nanjing Normal University;

【机构】 江苏省新型动力电池重点实验室,江苏省生物医药功能材料协同创新中心,南京师范大学化学与材料科学学院；

【摘要】 三维纳米多孔锡基合金在脱嵌锂过程中同时具有结构和组成上的特性,有望表现出优越的储锂性能从而满足锂离子动力电池的需求。本文以SnCl₄-K₃Co（CN）₆-K₂Ni（CN）₄三金属氰胶为前驱体,通过简便的化学还原过程制备三维纳米多孔Sn-Co-Ni三元合金。作为锂离子电池负极材料,该三维纳米多孔Sn-Co-Ni三元合金表现出了好的循环稳定性和高的比容量。200次循环后,该合金样品的放电比容量仍高达462.9 mA·h/g。更多还原

【Abstract】 Three-dimensional nanoporous tin-based alloys possess unique structural and compositional superiorities toward lithium storage,and are thus anticipated to meet the performance requirements of advanced lithium-ion batteries（LIBs）.Herein,three-dimensional nanoporous Sn-Co-Ni ternary alloy has been prepared through a facile chemical reduction route by using SnCl₄-K₃Co（CN）₆-K₂Ni（CN）₄ trimetalhc cyanogel as a precursor.When utilized as an anode for LIBs,the as-prepared Sn-Co-Ni ternary alloy manifests excellent cycling stability and higher capacities.A high discharge capacity of 462.9 mA-h/g can still be retained after 200discharge/charge cycles.更多还原