几种锂离子电池材料的前处理方法

Synthesis of Pretreatment Methods for Several Lithium Ion Battery Materials

高浓度的杂质离子含量不仅会导致锂离子电池可逆比容量下降,而且其中金属杂质离子的析出会导致电极表面无法形成有效的钝化层,带来安全隐患。由此可见,锂离子电池原材料中金属杂质的检测至关重要。金属杂质元素的含量多使用AAS和ICP测试,这些测试需对锂离子电池原材料进行前处理方可测试。本文对锂离子电池的几种原材料的前处理方法做详细的说明,所使用的方法安全有效,为测试锂离子原材料中金属杂质的需求做指导。

As we all know,high concentration of impurity ions will not only lead to the decline of the reversible specific capacity of lithium-ion batteries,but also the precipitation of metal impurity ions will lead to the inability to form an effective passivation layer on the electrode surface,thus bringing safety risks.It can be seen that the detection of metal impurities in the raw materials of lithium ion batteries is very important.AAS and ICP tests are often used to measure the content of metal impurities.These tests require pre-treatment of the raw materials of lithium-ion batteries and dissolution of the raw materials into solutions.The pre-treatment methods of several raw materials commonly used for lithium ion batteries were described in detail.The methods used were mostly safe and effective,and the requirements for testing metal impurities in lithium ion raw materials were guided.