The recycling of LiCoO2 cathode materials from spent li thium ion batteries was studied.A corresponding process was proposed.Propylene c arbonate was used as the solvent to recycle electrolyte.NMP was used as the solv...The recycling of LiCoO2 cathode materials from spent li thium ion batteries was studied.A corresponding process was proposed.Propylene c arbonate was used as the solvent to recycle electrolyte.NMP was used as the solv ent to separate the active materials from current collectors at 70 ℃.Carbon pow der was removed by heat-treatment. Cobalt compounds were dissolved by HCl solu tion and recycled as Co（OH）2. The recycled Co（OH）2 was used as t he starting material to synthesize LiCoO2.The net recovery of cobalt was more than 99%.The analytical results of recycled LiCoO2 showed that the recycling p rocess was practical.展开更多
通过高温烧结,可以实现废弃锂离子电池中钴酸锂(LiCoO_2)的直接回收。为研究不同的锂和钴初始摩尔比对再生LiCoO_2电化学性能的影响,在高温烧结前向废弃锂离子电池材料中添加一定量的碳酸锂(Li_2CO_3)。用扫描电子显微镜和X射线衍射技...通过高温烧结,可以实现废弃锂离子电池中钴酸锂(LiCoO_2)的直接回收。为研究不同的锂和钴初始摩尔比对再生LiCoO_2电化学性能的影响,在高温烧结前向废弃锂离子电池材料中添加一定量的碳酸锂(Li_2CO_3)。用扫描电子显微镜和X射线衍射技术对高温烧结回收的钴酸锂样品进行微观形貌和晶相结构的分析测试。数据表明:调整初始锂和钴摩尔比为1.00时,再生LiCoO_2首次充电比容量达到137.9 m Ah/g,经过30次充放电循环测试后,其充电比容量为130.5m Ah/g,损失率仅为5.4%,表现出良好的电化学循环性能。展开更多
文摘The recycling of LiCoO2 cathode materials from spent li thium ion batteries was studied.A corresponding process was proposed.Propylene c arbonate was used as the solvent to recycle electrolyte.NMP was used as the solv ent to separate the active materials from current collectors at 70 ℃.Carbon pow der was removed by heat-treatment. Cobalt compounds were dissolved by HCl solu tion and recycled as Co（OH）2. The recycled Co（OH）2 was used as t he starting material to synthesize LiCoO2.The net recovery of cobalt was more than 99%.The analytical results of recycled LiCoO2 showed that the recycling p rocess was practical.
文摘通过高温烧结,可以实现废弃锂离子电池中钴酸锂(LiCoO_2)的直接回收。为研究不同的锂和钴初始摩尔比对再生LiCoO_2电化学性能的影响,在高温烧结前向废弃锂离子电池材料中添加一定量的碳酸锂(Li_2CO_3)。用扫描电子显微镜和X射线衍射技术对高温烧结回收的钴酸锂样品进行微观形貌和晶相结构的分析测试。数据表明:调整初始锂和钴摩尔比为1.00时,再生LiCoO_2首次充电比容量达到137.9 m Ah/g,经过30次充放电循环测试后,其充电比容量为130.5m Ah/g,损失率仅为5.4%,表现出良好的电化学循环性能。
