Nanoflower Copper Sulfide as Cathode Materials for Magnesium Ion Batteries  

纳米花状CuS作为镁离子电池正极材料

作　　者：He Yuantai Wu Liang Shi Yongan Zhong Zhiyong Yao Wenhui Pan Fusheng 何元泰;吴量;史永安;钟志永;姚文辉;潘复生(重庆大学材料科学与工程学院国家镁合金材料工程技术研究中心,重庆400044;重庆大学机械传动国家重点实验室,重庆400044;池州市质量监督检验研究院,安徽池州247100)

机构地区：[1]National Engineering Research Center for Magnesium Alloys,College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China [2]State Key Laboratory of Mechanical Transmission for Advance Equipment,Chongqing University,Chongqing 400044,China [3]Chizhou Research Institute of Quality Supervision and Inspection,Chizhou 247100,China

出　　处：《稀有金属材料与工程》2025年第3期545-553,共9页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(52171101);Fundamental Research Funds for the Central Universities(2024IAIS-QN009);National Key R&D Program of China(2021YFB3701100)。

摘　　要：CuS-C50,the cathode materials for magnesium ion batteries,was synthesized by adding the surfactant cetyltrimethyl ammonium bromide(CTAB)and adjusting the percentage of ethylene glycol to 50vol%in hydrothermal synthesis process.Results show that CuS-C50 has the complete nanoflower structure.In aluminum chloride-pentamethylcydopentodiene/tetrahydrofuran(APC/THF)electrolyte,the CuS-C50 exhibits a high specific capacity of 331.19 mAh/g when the current density is 50 mA/g and still keeps a specific capacity of 136.92 mAh/g over 50 cycles when the current density is 200 mA/g.Results of morphology characterizations indicate that the complete nanoflower structure can provide more active sites and reduce the barriers for Mg^(2+)movement,eventually improving the charge and discharge performance of the CuS cathode materials for magnesium ion batteries.在水热合成过程中加入表面活性剂十六烷基三甲基溴化铵(CTAB),调节乙二醇的用量为50vol%,合成了镁离子电池正极材料CuS-C50。结果表明:CuS-C50具有完整的纳米花状结构,在氯化铝-季戊四醇四甲醚/四氢呋喃(APC/THF)电解液中,当电流密度为50 mA/g时,其比容量高达331.19 mAh/g;当电流密度为200 mA/g时,其比容量在50次循环后仍保持136.92 mAh/g。形貌表征结果表明,完整的纳米花状结构可以提供更多的活性位点,减少Mg^(2+)的移动障碍,最终提高镁离子电池CuS正极材料的充放电性能。

关 键 词：copper sulfide nanoflower magnesium ion batteries CTAB hydrothermal synthesis 

分 类 号：TM912[电气工程—电力电子与电力传动]