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Tungsten disulfide nanosheets are expected to improve the performance of lithium iron phosphate cathode materials

wallpapers Tech 2021-04-01
Tungsten disulfide nanosheets are expected to improve the performance of lithium iron phosphate cathode materials.
 In the industrialization of lithium-ion batteries, cathode materials are becoming the main bottleneck for their development. Compared with other materials, low-dimensional disulfide nanosheets are considered by the public as a promising material for lithium-ion batteries because of their layered structure and large surface area.It can effectively reduce the probability of thermochemical reactions with electrolyte solvents.
As one of the key materials that determine the performance of lithium-ion batteries, cathode materials are currently the main source of lithium ions in commercial lithium-ion batteries. At present, the positive electrode materials that have been successfully developed and used mainly include lithium cobalt oxide, lithium iron phosphate, lithium manganate, ternary materials such as lithium nickel cobalt manganate (NCM) and lithium nickel cobalt aluminate (NCA).
 
There are deficiencies in lithium iron phosphate materials
Lithium iron phosphate is a kind of cathode material that we are not familiar with. Because of its advantages such as higher safety and lower production cost, it is welcomed by many manufacturers, but this does not mean that lithium iron phosphate material. There is no shortage. In order to make up for the shortcomings of the cathode material, scientists used low-dimensional disulfide nanosheets to improve it to obtain products with higher conductivity, larger capacity, and better low-temperature performance.
 
 
Tungsten disulfide nanosheets are expected to replace the cobalt element in lithium battery cathode materials
According to chemical materials researchers, high crystallinity tungsten disulfide nanosheets are very suitable for participating in the production of special lithium battery cathode materials, mainly because they not only have higher electrochemical performance but also have better temperature resistance. Tungsten disulfide nanosheets are a kind of tungsten sulfide, which has good thermal and mechanical properties. Therefore, as a positive electrode material modifier, it can effectively enhance the high-temperature resistance and low-temperature resistance of the product and reduce its own chemical reaction. The possibility of enhancing the safety of special lithium batteries.

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