Lithium ion battery
A lithium-ion battery, electrolyte technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of high temperature performance deterioration, increased contact area, structural changes, etc., to achieve excellent cycle life and storage life, suppress DC Increase of internal resistance, effect of inhibiting oxidative decomposition
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[0031] In the lithium ion battery of the present invention, the preparation method of the positive electrode active material may include the steps: S1, adding metal N oxide nanoparticles into deionized water, stirring and ultrasonic vibration, to obtain a uniformly dispersed metal N oxide aqueous solution; S2, The matrix Li of the positive electrode active material x Ni y co z m k Me p o r A m Add it to the metal N oxide aqueous solution, stir to dissolve the residual lithium on the surface of the substrate in the water, the metal N oxide nanoparticles are attached to the surface of the substrate, and then filter and dry to remove the solvent to obtain a powder; S3, the obtained in step S2 The powder is mixed with a simple substance or compound containing element N', and then heat-treated to obtain a positive electrode active material.
[0032] In the preparation method of the positive electrode active material, the substrate is washed with water while the first coating ...
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