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Nano-scale manganese monoxide-conductive carbon black composite material and synthetic method thereof

A technology of conductive carbon black and manganese oxide, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as limiting electrochemical performance, achieve environmental friendliness, simple technical process, excellent The effect of electrochemical performance

Inactive Publication Date: 2015-05-20
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its low intrinsic conductivity limits its electrochemical performance at high currents, becoming one of the bottlenecks in the commercialization of manganese oxide electrodes.

Method used

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  • Nano-scale manganese monoxide-conductive carbon black composite material and synthetic method thereof
  • Nano-scale manganese monoxide-conductive carbon black composite material and synthetic method thereof
  • Nano-scale manganese monoxide-conductive carbon black composite material and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Preparation of manganese oxide / conductive carbon black composite material and electrochemical performance test of a simulated battery assembled with Li.

[0028] Dissolve 2 g of potassium permanganate (purchased from Shanghai Lingfeng Chemical Reagent Co., Ltd.) in 500 mL of deionized water, add 1 g of conductive carbon black (purchased from Shanghai Heshibi Co., Ltd.), and mix thoroughly and evenly. The resulting mixture was reacted at 60°C for 12 hours, filtered, the product was fully washed with deionized water, and dried. The microscopic appearance of the obtained manganese oxide / conductive carbon black composite was as follows: figure 1 . In a tube furnace in a mixture of hydrogen and argon (10% H 2 , 90% Ar) at a rate of 1°C / min to 400°C, keep the temperature for 5h, and cool down to room temperature naturally to obtain a nano-manganous oxide / conductive carbon black composite material with a microstructure such as figure 2 As shown, the particle size...

Embodiment 2

[0030] Example 2: Preparation of manganese oxide / conductive carbon black composite material and electrochemical performance test of a simulated battery assembled with Li.

[0031] Dissolve 4 g of potassium permanganate (purchased from Shanghai Lingfeng Chemical Reagent Co., Ltd.) in 500 mL of deionized water, add 1 g of conductive carbon black (purchased from Shanghai Hersbit Company), and mix thoroughly and evenly. The resulting mixture was reacted at 60°C for 16 hours, filtered, the product was fully washed with deionized water, and dried. In a tube furnace in a hydrogen-nitrogen mixed atmosphere (10% H 2 , 90%N 2 ) at a rate of 2°C / min to 500°C, heat preservation for 2h, and naturally cool to room temperature to obtain nano-manganese oxide / conductive carbon black composite material; the particle size of the obtained manganese oxide / conductive carbon black composite is 50nm-80nm. The material is prepared as the negative electrode of lithium-ion battery, and the charge-dis...

Embodiment 3

[0032] Example 3: Preparation of manganous oxide / conductive carbon black composite material and electrochemical performance test of a simulated battery assembled with Li.

[0033] 1 g of potassium permanganate (purchased from Shanghai Lingfeng Chemical Reagent Co., Ltd.) was dissolved in 499 mL of deionized water, and 1 g of conductive carbon black (purchased from Shanghai Heshibi Co., Ltd.) was added, fully mixed and evenly stirred. The resulting mixture was reacted at 80°C for 6 hours, filtered, the product was fully washed with deionized water, and dried. In a tube furnace in an argon atmosphere, the temperature was raised to 700°C at a rate of 5°C / min, kept for 2 hours, and naturally cooled to room temperature to obtain nano-manganese oxide / conductive carbon black composite materials, manganese oxide / conductive carbon black composite materials The particle size of the substance is 50nm-80nm; its XRD diffraction image is as follows Figure 8As shown, it has a good correspo...

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Abstract

The invention provides a nano-scale manganese monoxide-conductive carbon black composite material and a synthetic method thereof. According to the synthetic method, a commercial low-cost conductive carbon black is used as a substrate to have oxidation-reduction reaction with potassium permanganate. The synthetic method comprises the following steps: generating nano-scale manganese oxide nano sheet-conductive carbon black composite particles at first, and then roasting in a reducing atmosphere or inert atmosphere to obtain a final nano-scale manganese monoxide-conductive carbon black composite material. The process is simple in operation, accords with environmental requirements, and is low in reaction equipment requirement, low in production cost and very suitable for industrial production. The prepared manganese monoxide-conductive carbon black composite material has excellent performance when being applied to a cathode of a lithium ion battery.

Description

technical field [0001] The invention relates to a nano-manganese oxide-conductive carbon black composite material and a synthesis method thereof, belonging to the technical field of lithium-ion battery electrode materials. Background technique [0002] Lithium-ion battery is an important chemical energy storage device that has attracted much attention at present. Because of its high energy density, light weight, no memory effect, long life and other advantages, it has been widely used as an energy storage unit in portable personal electronic devices represented by mobile phones and notebook computers. Nowadays, lithium-ion batteries are gradually moving towards the field of electric vehicle power and large-capacity energy storage power supplies. New application fields put forward higher requirements for the performance of lithium-ion batteries, and improve the electrode materials and technologies of traditional lithium-ion batteries. , optimization and even replacement is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/50H01M4/62H01M4/131B82Y30/00
CPCY02E60/10
Inventor 邵宗平邓翔赵伯特张兆宝蔡锐
Owner NANJING UNIV OF TECH
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