PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC for the core-shell structure of the shell material can provide structural stability and thermal stability, but when the composition and structure of the core material and the shell material difference is large, there will be a gap between the core-shell after a long time of charging and discharging. The core gradually loses the channel for lithium ion migration, resulting in a sharp reduction in the specific capacity of the material.
In order to solve the problem of compatibility between the core and shell interface, PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC iron removal materials with concentration-gradient shell structure and full concentration-gradient shell structure were proposed based on the core-shell structure. The fully graded material Li[NixCo0.16Mn0.84-x]O2 was synthesized by changing Mn content. The effects of Mn content on the structure, morphology, electrochemical performance and thermal stability of the material were systematically investigated.
The experimental results show that with the increase of Mn content, the cyclic stability and thermal stability of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC for iron removal gradually increase, while the specific capacity decreases correspondingly. Overall consideration, when the content of Mn is 25%, the material has better comprehensive performance.
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