Cadmium hydroxide porous material, preparation method and cathode and battery comprising the material

Abstract

The invention relates to a cadmium hydroxide porous material, a preparation method, a cathode and a battery comprising the material. The cadmium hydroxide porous material has a pore diameter greater than or equal to 0.2 μm, and an optical band gap greater than or equal to 3.2 eV. The preparation method comprises the following steps: preparing a polar alkaline solution; preparing a non-polar cadmium source solution; the non-polar cadmium source solution comprises a non-polar solvent and an organic cadmium salt dissolved in the non-polar solvent, and the organic cadmium salt has 4 ~30 carbon chain length; mix and stir the polar alkaline solution and the non-polar cadmium source solution, the mixing volume ratio of the polar alkaline solution and the non-polar cadmium source solution is n:1, n=0.1~100; The obtained mixture is continuously stirred to keep the non-polar cadmium source solution dispersed in the polar alkaline solution to form a cadmium hydroxide material precipitate; the obtained mixture is subjected to solid-liquid separation and washing to obtain a cadmium hydroxide porous material. Porous cadmium hydroxide has greater potential as a cathode material for batteries.

Description

Technical field [0001] The present invention relates to a cadmium hydracene hydroxide material, in particular a cadmium hydroxide porous material, a method, and a cathode and battery comprising a cadmium hydroxide porous material. Background technique [0002] The porous electrode is an electrode having a high ratio surface of a powder active substance or mixing with a conductive inert solid particulate, by pressing, sintering or formation. The chemical power series uses a porous electrode. The porous electrode is used to improve the activity of electrochemical reactions than the surface. Since the amount of the active material of the discharge process is improved, the real current density of the electrode is greatly reduced due to the increase in the pore rate and the surface of the electrode, thereby reducing the energy loss of the battery (including voltage loss and capacity loss). The performance of the battery is significantly improved. [0003] A cadmium hydroxide is a laye...

AI Technical Summary

Problems solved by technology

[0005] With the development of society, electronic products have higher and higher requirements for batteries, and pose greater challenges to electrode materials, especially in some special scenarios. At present, nanowires, nanosheets and hollow spheres are composed of The one-dimensional necklace-like cadmium hydroxide cannot meet the growing requirements of porous electrodes

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