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Production technology for composite material consisting of metal and oxides thereof and carbon

A carbon composite material and production process technology, applied in active material electrodes, electrode manufacturing, electrode heat treatment, etc., can solve problems such as easy oxidation and easy melting, reduce the problem of excessive gas production, solve cycle peeling failure, and avoid battery The effect of capacity loss risk

Inactive Publication Date: 2017-06-20
江苏强劲新能源科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Because metal materials are easy to melt and oxidize in the high-temperature environment of carbon source pyrolysis, there are no mature reports on the coating treatment of metal materials such as metal tin (Sn), zinc (Zn), and aluminum (Al). craft

Method used

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  • Production technology for composite material consisting of metal and oxides thereof and carbon
  • Production technology for composite material consisting of metal and oxides thereof and carbon
  • Production technology for composite material consisting of metal and oxides thereof and carbon

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] according to figure 1 , the present invention provides a production process of metal and its oxide and carbon composite material, including powder preparation, slurry preparation, spray granulation, surface modification, preliminary sintering, pyrolysis into shell, cooling and shaping, jet milling, Composite anode materials;

[0030] 1. The powder is prepared, the composition and ratio of the powder are: by weight percentage;

[0031]

[0032] The carbo...

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Abstract

The invention discloses a production technology for a composite material consisting of metal and oxides thereof and carbon. The production technology comprises powder material preparation, slurry preparation, spray granulation, surface modification, preliminary sintering, pyrolysis shell-forming, cooling sizing, airflow crushing, and compounding of negative electrode material; a carbon source comprises the mixture of any one or two or more of cane sugar, polyvinyl alcohol and starch high polymer material; metal powder comprises the mixture of any one or two or more of stannum, zinc and aluminum metal materials; metal oxide powder comprises the mixture of any one or two or more of stannum oxide, zinc oxide and aluminum oxide powder; sodium carboxymethyl cellulose is used as a thickener. According to the production technology provided by the invention, the carbon source, and the metal stannum, zinc and aluminum and the oxides thereof are subjected to coating treatment to prepare a composite negative electrode material with a spherical core-shell structure, expansion of a metal core negative electrode is limited and stripping of the metal negative electrode and foil is effectively relieved by pyrolyzing a carbon shell.

Description

technical field [0001] The invention relates to the technical equipment field of metal and carbon clad materials, in particular to a production process of metal and its oxides and carbon composite materials. Background technique [0002] The research and application of anode materials for high-capacity secondary batteries has become the key to improving battery performance. In theory, some metals or metals and their oxides that can form an alloy system with ions can be used as negative electrode materials for secondary ion batteries. These negative electrode materials are collectively referred to as alloy negative electrode materials. Active lithium storage elements such as Al, Sn, Si, and Sb are relatively common metal anode materials for lithium-ion secondary batteries. Zn is also a relatively common metal anode material for secondary batteries. [0003] The disadvantages of alloy anode materials are large initial irreversible capacity and poor cycle performance. The f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/48H01M4/62H01M4/04
CPCH01M4/04H01M4/0471H01M4/366H01M4/38H01M4/48H01M4/628H01M2004/027Y02E60/10
Inventor 王自强
Owner 江苏强劲新能源科技有限公司
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