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Activated carbon metal oxide electrode material and synthesis process thereof

A technology of electrode material and synthesis process, which is applied in the field of activated carbon metal oxide electrode materials and its synthesis process, can solve the problems of fast specific capacity decay, poor cycle stability of high current density, and conductivity affecting rate performance, etc., to achieve specific capacity decay Effects of slowing down, enhanced cycle stability, and enhanced conductivity

Active Publication Date: 2019-09-13
HANGZHOU XINGYU CARBON TECH GREEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lower conductivity of metal oxides and transition metal oxides affects their rate performance at high current densities. poor cycle stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Activated carbon metal oxide electrode material is made from raw materials including the following weight proportions, 5 parts of activated carbon, Nd(NO 3 ) 3 ·6H 2 O 1 part; Ca(NO 3 ) 2 0.5 parts, Mn(NO 3 ) 2 1 part, 30 parts of deionized water, 10 parts of alcohol, 4 parts of citric acid, and 0.1 part of ethylene glycol.

[0028] The synthesis technique of described activated carbon metal oxide electrode material comprises the following steps,

[0029] A, pulverize activated carbon, pass through a 200-mesh sieve to obtain product A;

[0030] B, put A product into the container that concentrated sulfuric acid is housed, feed nitrogen into the bottom of the container, the flow rate of nitrogen is 70mL / min, soak for 3h, wash until pH is 6.5, dry to get B product;

[0031] C, take B product, Nd(NO 3 ) 3 ·6H 2 O, Ca(NO 3 ) 2 and Mn(NO 3 ) 2 , put into the mixed solution of deionized water and alcohol, stir at 70°C for 1.5h, and the stirring speed is 450-500r...

Embodiment 2

[0039] Activated carbon metal oxide electrode material is made from raw materials including the following weight proportions, 12 parts of activated carbon, Nd(NO 3 ) 3 ·6H 2 O 3 parts; Ca(NO 3 ) 2 1.5 parts, Mn(NO 3 ) 2 5 parts, 50 parts of deionized water, 30 parts of alcohol, 9.5 parts of complexing agent, 9 parts of citric acid, and 0.3 parts of ethylene glycol.

[0040] The synthetic technique of described activated carbon metal oxide electrode material comprises the following steps,

[0041] A, the activated carbon is pulverized and passed through a 300-mesh sieve to obtain product A;

[0042] B, put A product into the container that concentrated sulfuric acid is housed, feed nitrogen into the bottom of the container, the flow rate of nitrogen is 90mL / min, soak for 23h, wash until pH is 7, dry to get B product;

[0043] C, take B product, Nd(NO 3 ) 3 ·6H 2 O, Ca(NO 3 ) 2 and Mn(NO 3 ) 2 , put into the mixed solution of deionized water and alcohol, stir at 10...

Embodiment 3

[0051] Activated carbon metal oxide electrode material is made from raw materials including the following weight proportions, 5 parts of activated carbon, Nd(NO 3 ) 3 ·6H 2 O 2 parts, Ca(NO 3 ) 2 3 parts, Mn(NO 3 ) 2 3 parts, 40 parts of deionized water, 20 parts of alcohol, 6 parts of citric acid, 0.2 parts of ethylene glycol.

[0052] The synthetic technique of described activated carbon metal oxide electrode material comprises the following steps,

[0053] A, the activated carbon is pulverized and passed through a 250-mesh sieve to obtain product A;

[0054] B, put A product into the container that concentrated sulfuric acid is housed, feed nitrogen into the bottom of the container, the flow rate of nitrogen is 80mL / min, soak for 2.5h, wash until pH is 7, dry to get B product;

[0055] C. Take product B, transition metal salts and metal salts, put them into a mixed solution of deionized water and alcohol, stir at 85°C for 1 hour at a stirring speed of 470rpm, and obt...

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PUM

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Abstract

The invention discloses an activated carbon metal oxide electrode material and a synthesis process thereof. The raw materials of the electrode material comprise activated carbon, transition metal salt, metal salt, deionized water, alcohol and a complexing agent; the synthesis process comprises the following steps of A, carrying out crushing and sieving on activated carbon, so as to obtain a product A; B, putting the product A into a concentrated sulfuric acid container with nitrogen, and carrying out soaking, washing and drying to obtain a product B; C, taking the product B, the transition metal salt and the metal salt, adding into deionized water and alcohol, and performing stirring to obtain a product C; D, adding the complexing agent into the product C, carrying out ultrasonic penetration and stirring, adjusting the pH value, and stirring to a sol state to obtain a product D; E, drying the product D into a gel, so as to obtain a product E; F, under the protection of nitrogen, sintering the product E to obtain a product F; and G, removing impurities from the product F, and carrying out washing and drying to obtain a finished product. According to the electrode material disclosedby the invention, the synergistic effect of the activated carbon and the metal oxide and the transition metal oxide is played, so that the electrode material with high specific capacity, high energy density and high current cycling stability is obtained.

Description

technical field [0001] The invention relates to the technical field of supercapacitor capacitance materials, in particular to an activated carbon metal oxide electrode material and a synthesis process thereof. Background technique [0002] Supercapacitors are a new type of electrochemical energy storage unit between batteries and ordinary physical capacitors. Because of their high energy density, short charging time and long cycle life, they are widely used in communications, aviation, etc. Aerospace, large-scale industrial equipment, microelectronic devices and many other occasions that require instantaneous release of large currents, especially in the field of electric vehicles have broad application prospects. [0003] Activated carbon materials are widely used in the preparation of supercapacitor electrode materials due to their advantages such as wide operating temperature range, large specific surface area, well-developed pore structure, uniform pore size, concentrated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/46H01G11/24
CPCH01G11/24H01G11/30H01G11/32H01G11/46Y02E60/13
Inventor 徐卫星
Owner HANGZHOU XINGYU CARBON TECH GREEN CO LTD