A kind of preparation method of lithium battery negative electrode material of cobalt ferrite-carbon cloth

Abstract

The invention discloses a preparation method of a cobalt diiron tetraoxide-carbon cloth lithium battery anode material. The preparation method comprises the following steps: providing a Berlin blue solution, wherein raw materials of the Berlin blue solution comprise a cobalt salt and an iron-cyanide salt; using the Berlin blue solution to soak carbon cloth so as to obtain a precursor / carbon cloth composite material; and carrying out heat treatment on the precursor / carbon cloth composite material. According to the preparation method disclosed by the invention, the composite material that CoFe2O4 is grown on a carbon cloth substrate is prepared in an in-situ manner. The manufacturing process of the electrode can be simplified, a direct electron transfer path between an active material and a current collector is provided, and meanwhile huge volume expansion in the lithium intercalation and deintercalation process can be relieved. The cobalt diiron tetraoxide-carbon cloth lithium battery anode material can serve as a lithium battery anode without a binding agent, and the lithium battery anode material has relatively high capacity, outstanding cycle stability and excellent rate capability. Meanwhile, the anode material can be used for assembling a flexible lithium ion battery, and can be applied to more fields.

Description

technical field

[0001] The invention relates to the technical field of lithium ion electrode materials, in particular to a method for preparing a lithium battery negative electrode material of cobalt tetraoxoferrate-carbon cloth. Background technique

[0002] In the rapidly developing modern society, especially today when traditional energy sources such as oil, coal, and natural gas are increasingly depleted, a new generation of batteries, as an environmentally friendly new energy source, has attracted widespread attention. Lithium-ion batteries, mercury-free alkaline zinc-manganese batteries, fuel cells, metal hydride nickel batteries and solar batteries are the most ideal green and environmentally friendly power sources in the 21st century, and the battery industry will also become one of the ten most promising energy pillar industries . For lithium-ion batteries, on the basis of the gradual maturity of production technology, its production cost is also declining. With t...

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