摘要
以废旧锂离子电池正极材料为原料,采用燃烧法制备高性能富锂锰基正极材料Li_(1.2)Mn_(0.54-x)Ni_(0.13)Co_(0.13)Al_(x)O_(2),实现了多组元金属离子的高值转化和全量利用,从根本上缩短产品化路径,消减二次污染。SEM和XRD检测表明,所有样品形貌差别不大,基本呈球形,直径约0.5μm,样品均无杂相峰出现,且都具有六方晶系的ɑ-NaFeO_(2)结构、R3m空间群,具有良好的层状结构。电化学测试表明,当x=0.03时,所得样品具有最佳的电化学性能,0.5 mA恒电流条件下,首次放电容量为238 mAh/g,200周循环后放电容量保持率为80.3%。
High-performance lithium rich manganese based cathode material Li_(1.2)Mn_(0.54-x)Ni_(0.13)Co_(0.13)Al_(x)O_(2)was prepared by combustion method applying cathode material of waste lithium ion battery as raw material,which realizes high-value conversion and full utilization of multi-component metal ions,and fundamentally shortens production path and reduces secondary pollution.SEM and XRD testing results show that all samples have little difference in morphology,basically spherical,with a diameter of about 0.5μm.There is no impurity peak in samples,and all samples have hexagonal systemɑ-NaFeO_(2) structure,R3 m space group,with good layered structure.The electrochemical test results show that the sample with x=0.03 has the best electrochemical performance.Under the condition of 0.5 mA constant current,the first discharge capacity is 238 mAh/g,and the discharge capacity retention rate is 80.3%after 200 cycles.
作者
任宇昊
李伟伟
姚路
李鹏发
司江菊
REN Yu-hao;LI Wei-wei;YAO Lu;LI Peng-fa;SI Jiang-ju(College of Chemistry and Materials Engineering,Xinxiang University,Xinxiang 453003,Henan,China;Academician Workstation of Photo Catalytic Materials and Micro Nano Application Technology in Henan,Xinxiang 453003,Henan,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2022年第4期92-95,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家自然科学基金资助项目(51871190,51901201)。
