Lithium-oxygen battery anode, preparation method thereof and lithium-oxygen battery
A lithium-oxygen battery and negative electrode technology, applied in the battery field, can solve the problems of loss of protection of lithium negative electrode, damage, etc., and achieve the effects of prolonging cycle life, improving Coulomb efficiency, and increasing specific surface area.
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[0035] In some embodiments, carbon nanotube microspheres can be prepared by dispersing carbon nanotubes in a solvent to form a dispersion, and then spray drying. For example, the preparation method may include the following steps:
[0036] A, the carbon nanotubes are dispersed into a dispersion solvent (without surfactant) by ultrasonic treatment to obtain a dispersion;
[0037] B. The dispersion liquid obtained in step A is sprayed out through the nozzle of the spray dryer, the air inlet temperature and the air outlet temperature are preset, and the solution is kept in a stirring state during the spraying process;
[0038] C. cooling to obtain carbon nanotube microspheres.
[0039] In some embodiments, the solvent is an organic and / or inorganic liquid capable of uniformly dispersing carbon nanotubes / carbon nanofibers and nanocarbon particles, for example, water, ammonia water, hydrochloric acid solution, ethanol, acetone, isopropanol Any one or combination of more.
[0040...
specific Embodiment approach 1
[0076] Specific Embodiment 1 is a lithium-oxygen battery negative electrode. The negative electrode includes a current collector and an electrode material layer with a lithium-carbon composite material as the active material attached to the surface of the current collector. The electrode material layer is made of micro-nano-scale metal Lithium-skeleton carbon composite material, or the electrode material layer contains micro-nano scale lithium alloy-skeleton carbon composite material.
specific Embodiment approach 2
[0077] Embodiment 2 is the lithium-oxygen battery negative electrode according to Embodiment 1 above, wherein the current collector is made of a porous metal material or metal foil.
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