Cuprous oxide/porous carbon composite material as lithium ion battery cathode material and preparation method thereof

A lithium-ion battery, cuprous oxide technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor conductivity, fast capacity decay, unsatisfactory rate performance, etc., achieve high rate performance, avoid chalking and failure. , the effect of excellent cycle stability

Inactive Publication Date: 2013-07-31
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor conductivity, fast capacity decay and unsatisfactory rate performance of the existing lithium-ion battery cuprous oxide negative electrode materials, and propose a cuprous oxide / porous carbon composite material as a lithium-ion battery negative electrode material and its preparation method

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  • Cuprous oxide/porous carbon composite material as lithium ion battery cathode material and preparation method thereof
  • Cuprous oxide/porous carbon composite material as lithium ion battery cathode material and preparation method thereof
  • Cuprous oxide/porous carbon composite material as lithium ion battery cathode material and preparation method thereof

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Embodiment

[0027] A method for preparing a cuprous oxide / porous carbon composite material as a lithium ion battery negative electrode material, the specific preparation steps are as follows:

[0028] 1) Dissolve 1g of copper sulfate in 80mL of deionized water, and magnetically stir to fully dissolve it;

[0029] 2) Add 0.8 g of porous carbon into the solution obtained in step 1), and ultrasonically disperse for 30 minutes to fully disperse the porous carbon in the solution;

[0030] 3) Add 0.72g of sodium hydroxide and 0.65g of glucose into the solution obtained in step 2), the reaction temperature is 80°C, continue to stir for 15 minutes, then stop stirring, age for 60min, and stand to obtain a precipitate;

[0031] 4) washing the precipitate obtained in step 3) with deionized water, suction filtering until the pH of the filtrate is neutral, drying the suction filtration product at 120° C. for 4 hours in vacuum to obtain a cuprous oxide / porous carbon composite material with a nanoporous...

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Abstract

The invention relates to a cuprous oxide / porous carbon composite material as a lithium ion battery cathode material and a preparation method thereof, and belongs to the technical field of chemical electrode materials. The preparation method comprises the following steps of adding porous carbon into a copper sulphate solution, carrying out ultrasonic dispersion, adding sodium hydroxide and glucose into the mixed solution at a temperature of 50 to 120 DEG C for a reaction, then carrying out washing pumping filtration until the pH value of the filtrate is 7, and carrying out vacuum drying of the pumping filtration products to obtain the cuprous oxide / porous carbon composite material having a nano-porous structure. The preparation method has simple processes, is feasible, and has strong preparation parameter controllability. The cuprous oxide / porous carbon composite material can be used as a lithium ion battery cathode material and has excellent charge and discharge performances, high cycling stability and a high rate capability.

Description

technical field [0001] The invention relates to a cuprous oxide / porous carbon composite material used as a negative electrode material of a lithium ion battery and a preparation method thereof, belonging to the technical field of chemical electrode materials. Background technique [0002] Energy and materials are the basis of material development. In recent years, due to the rapid development of science and technology, the consumption of non-renewable resources such as petroleum has accelerated, and the energy problem has become an urgent problem that cannot be ignored. Lithium-ion batteries have unique advantages such as high specific energy, high working voltage, low self-discharge rate, long cycle life, and no pollution. They are considered to be one of the secondary renewable resources that can best replace petroleum. Among them, the negative electrode material of lithium-ion battery is one of the key factors restricting the capacity of lithium-ion battery. [0003] As...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/48
CPCY02E60/12Y02E60/10
Inventor 穆道斌陈实沈雪阳吴伯荣吴锋赵章宏陶丹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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