摘要
以废旧高镍锂离子电池(NCM523)硫酸浸出液为原料,采用三种不同沉淀剂,通过共沉淀法回收制备NaNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)正极材料。利用扫描电子显微镜、X射线衍射和电化学测试对材料的形貌结构和电化学性能进行分析。实验结果表明,以氢氧化钠为沉淀剂制备的钠离子电池结晶度较好,首次放电比容量为81.09 mAh/g,具有最小电荷转移电阻为177.38Ω,有利于离子扩散,相较于另外两种沉淀剂制备的材料表现出更为优异的电化学性能。
NaNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)cathode material was prepared by coprecipitation with three different precipitators and sulfuric acid leaching solution of waste high-nickel lithium ion battery(NCM523)as raw material.The morphology,structure and electrochemical properties of the materials were analyzed by scanning electron microscopy,X-ray diffraction and electrochemical testing.The experimental results showed that the sodium ion battery prepared with sodium hydroxide as precipitator had good crystallinity,the first discharge specific capacity was 81.09 mAh·g^(-1),and the minimum charge transfer resistance was 177.38Ω,which was conducive to ion diffusion.Compared with the other two precipitators,the materials prepared with sodium hydroxide showed better electrochemical performance.
作者
李云秀
刘志江
LI Yun-xiu;LIU Zhi-jiang(Shenyang Ligong University,Shenyang Liaoning 100159,China)
出处
《辽宁化工》
CAS
2023年第9期1303-1305,1309,共4页
Liaoning Chemical Industry
关键词
废旧锂离子电池
回收
共沉淀
镍钴锰酸钠
Waste lithium-ion batteries
Recycling
Coprecipitation
NaNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)
作者简介
李云秀(1998-),女,山东省青岛人,硕士,2023年毕业于沈阳理工大学环境科学与工程专业,研究方向:环境污染控制技术;通信作者:刘志江(1973-),男,副教授,硕士,研究方向:腐蚀科学与防护技术。
