Method for preparing foamed copper
A technology of foamed copper and copper powder, which is applied in nanotechnology for materials and surface science, active material electrodes, electrode carriers/collectors, etc., can solve the problems of complex preparation methods and high costs, and achieve simple preparation processes and low cost. Low, excellent electrochemical performance
Pending Publication Date: 2019-12-20
HUNAN AIHUA GRP
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Problems solved by technology
[0003] At present, the lithium-intercalation properties of loaded carbon materials as electrode materials for lithium-ion batteries can be directly added to the electrodes as conductive agents, and have excellent electrical properties, but their preparation methods are complicated and costly.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0022] After ball milling 10 g of NaCl particles for 60 min, NaCl particles with an average particle size of 4 μm were obtained. After mixing 2.41 g of NaCl particles with a particle size of 4 μm and 10 g of electrolytic copper powder, a mixture of 30 mg of NaCl and copper powder was pressed into a green body. The green body prepared above was placed in a tube furnace, and under the protective atmosphere of argon, the temperature was raised to 760°C at a heating rate of 10°C / min, and the holding time was 2h to obtain a sintered billet. Take the sintered blank and place it in a circulating hot water device at 80°C to dissolve NaCl, and then dry it to obtain a copper foam with a porosity of 50% and an average pore diameter of 40 μm.
[0023] Weigh 0.0145g of nickel nitrate hexahydrate and 0.0063g of cobalt nitrate hexahydrate, dissolve them in 50mL of deionized water to prepare a 0.001mol / L solution, and then add ammonia water to obtain a mixed colloid of nickel hydroxide and cob...
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Abstract
The invention provides a method for preparing foamed copper. The method comprises the steps of (1) preparing foamed copper, namely mixing copper powder with an alkali metal salt, preparing a green body, sintering under protective atmosphere to obtain a sintered blank and then removing the alkali metal salt to obtain the foamed copper; (2) soaking the foamed copper obtained in the step (1) into a colloid solution of nickel hydroxide and cobalt hydroxide, drying and burning under reducing gas atmosphere to obtain the foamed copper loaded with porous nickel-cobalt metal; and (3) carrying out cracking reaction on the foamed copper, loaded with the porous nickel-cobalt metal, obtained in the step (2) in a mixed gas of gaseous alkyne and an inert gas to obtain the foamed copper loaded with the porous nickel-cobalt metal and nanocarbon particles.
Description
technical field [0001] The invention relates to a method for preparing foamed copper. Background technique [0002] As a kind of green energy, lithium-ion battery has the advantages of high energy density, high working voltage, wide working temperature range, long cycle life, no memory effect, light weight, etc. It is widely used in portable electrical appliances, electric vehicle industry, military equipment and aerospace industry etc. The negative electrode material of lithium-ion batteries is one of the important factors affecting battery performance, which determines the capacity and cycle performance of lithium-ion batteries. [0003] At present, the lithium-intercalation properties of loaded carbon materials as electrode materials of lithium-ion batteries can be directly added to the electrodes as conductive agents, and have excellent electrical properties, but their preparation methods are complicated and costly. Contents of the invention [0004] The object of th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01M4/1395H01M4/36H01M4/38H01M4/62H01M4/66H01M4/80H01M10/0525B82Y30/00
CPCH01M4/625H01M4/362H01M4/38H01M4/808H01M4/661H01M10/0525H01M4/1395B82Y30/00H01M2004/027H01M2004/021Y02E60/10
Inventor 艾亮颜鹤贾明杨静如
Owner HUNAN AIHUA GRP