Inorganic Chemicals Industry >
Study on effect of different cobalt content on properties of ternary cathode materials
Received date: 2021-03-24
Online published: 2021-11-15
With the popularization and promotion of new energy vehicle and lithium-ion batteries,the need of cobalt is gradu-ally increased.So,reducing the content of cobalt in power ternary cathode materials has become an urgent need for all compa-nies in the new energy industry chain. Different cobalt content in NCM622 cathode material was explored.Four kinds of ca-thode materials,NCM60/20/20,NCM60/15/25,NCM60/10/30,NCM60/05/35,were synthesized under the optimum experi-mental conditions.The effect of cobalt content on the ternary cathode materials and lithium-ion batteries was explored by ana-lyzing the SEM,XRD,initial discharge capacity,initial efficiency,rate performance,cycle performance and DCR growth.It′s found that,when the molar content of cobalt decrease from 20% to 5%,the initial discharge capacity decrease from 178 mA·h/g to 165 mA·h/g;the capacity retention of the 50 th cycle decrease from 96% to 88%;the DCR growth from 10% to 20%.When the molar content of cobalt was less than 10%,the properties were worst.
Bin ZHANG , Ping ZHANG , Xiaogang XIANG , Zhengqiang WANG . Study on effect of different cobalt content on properties of ternary cathode materials[J]. Inorganic Chemicals Industry, 2021 , 53(11) : 91 -94 . DOI: 10.19964/j.issn.1006-4990.2021-0183
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