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A kind of high entropy carbonate electrocatalyst and preparation method thereof

An electrocatalyst and carbonate technology, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of high price and poor catalytic activity, achieve low production cost, increase the density of states, and facilitate market promotion

Active Publication Date: 2022-04-29
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a kind of high-entropy carbonate electrocatalyst and preparation method thereof, and this method catalyst has advantages such as simple synthesis, low price, high catalytic activity, excellent catalytic stability, can effectively Solve the problems of high price and poor catalytic activity of existing catalysts

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  • A kind of high entropy carbonate electrocatalyst and preparation method thereof
  • A kind of high entropy carbonate electrocatalyst and preparation method thereof
  • A kind of high entropy carbonate electrocatalyst and preparation method thereof

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Embodiment 1

[0030] A kind of high entropy carbonate electrocatalyst, its preparation method comprises the following steps:

[0031] (1) Inorganic salts of five metals including cobalt, chromium, iron, manganese and molybdenum are used as raw materials, and the molar ratio of the five elements of cobalt, chromium, iron, manganese and molybdenum is 1:1:1:1:1, respectively Weigh 0.498g Co(CH 3 COO) 2 4H 2 O, 0.8gCr(NO 3 ) 3 9H 2 O, 0.808gFe(NO 3 ) 3 9H 2 O, 0.396g MnCl 2 4H 2 O and 0.353g (NH 4 ) 6 Mo 7 o 24 4H 2 O, be dissolved in 80mL deionized water to form a mixed solution of inorganic salts; 6.6g urea (CO(NH 2 ) 2 ) was dissolved in 30mL deionized water to obtain a precipitant solution, and then the precipitant solution was added to the inorganic salt mixed solution under stirring conditions, and after stirring for 1 hour, a reaction solution was obtained;

[0032] (2) Pour the reaction solution in step (1) into a closed reaction kettle, and conduct a hydrothermal react...

Embodiment 2

[0035] A kind of high entropy carbonate electrocatalyst, its preparation method comprises the following steps:

[0036](1) Inorganic salts of five metals of cobalt, chromium, iron, manganese and molybdenum are used as raw materials, and the molar ratio of the five elements of cobalt, chromium, iron, manganese and molybdenum is 1:3:2:3:1, respectively Weigh 0.291g Co(NO 3 ) 2 ·6H 2 O, 1.2gCr(NO 3 ) 3 9H 2 O, 0.541gFeCl 3 ·6H 2 O, 0.169g MnSO 4 ·H 2 O and 1.236g (NH 4 ) 6 Mo 7 o 24 4H 2 O, dissolved in 80mL deionized water to form a mixed solution of inorganic salts; 7.9g ammonium bicarbonate (NH 4 HCO 3 ) was dissolved in 30mL deionized water to obtain a precipitant solution, and then the precipitant solution was added to the inorganic salt mixed solution under stirring conditions, and after stirring for 1.5h, a reaction solution was obtained;

[0037] (2) Pour the reaction solution in step (1) into a closed reaction kettle, and conduct a hydrothermal reaction a...

Embodiment 3

[0040] A kind of high entropy carbonate electrocatalyst, its preparation method comprises the following steps:

[0041] (1) Inorganic salts of five metals of cobalt, chromium, iron, manganese, and molybdenum are used as raw materials, and the molar ratio of the five elements of cobalt, chromium, iron, manganese, and molybdenum is 2:1:3:2:2, respectively Weigh 0.563g CoSO 4 ·7H 2 O, 0.267gCrCl 3 ·6H 2 O, 1.212g Fe(NO 3 ) 3 9H 2 O, 0.574g Mn(NO 3 ) 2 ·6H 2 O and 2.472g (NH 4 ) 6 Mo 7 o 24 4H 2 O, be dissolved in 80mL deionized water to form a mixed solution of inorganic salts; 9.6g ammonium carbonate ((NH 4 ) 2 CO 3 ) was dissolved in 30mL deionized water to obtain a precipitant solution, and then the precipitant solution was added to the inorganic salt mixed solution under stirring conditions, and after stirring for 2 hours, a reaction solution was obtained;

[0042] (2) Pour the reaction solution in step (1) into a closed reaction kettle, and conduct a hydroth...

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Abstract

The invention provides a high-entropy carbonate electrocatalyst and a preparation method thereof. The preparation method comprises the following steps: dissolving five kinds of inorganic salts of cobalt, chromium, iron, manganese and molybdenum in deionized water, and then stirring Add a precipitant to the solution under the conditions, stir and react to obtain a mixed solution; carry out hydrothermal treatment to the mixed solution; wash the hydrothermal product, and then dry it to obtain a high-entropy carbonate material (Co α Cr β Fe γ mn δ Mo ε )CO 3 . The catalyst of the method has the advantages of simple synthesis, low price, high catalytic activity, excellent catalytic stability, etc., and can effectively solve the problems of high price and poor catalytic activity of existing catalysts.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a high-entropy carbonate electrocatalyst and a preparation method thereof. Background technique [0002] With the global energy crisis and environmental pollution becoming more and more serious, renewable clean energy is facing major opportunities for development. energy storage and conversion. As a green, clean and efficient secondary energy source, hydrogen is an ideal substitute for traditional fossil fuels. Hydrogen production by electrolysis of water is an important way to obtain hydrogen. The efficiency of hydrogen production at the cathode mainly depends on the kinetic characteristics of the oxygen evolution reaction (OER) at the anode. Because this method has problems such as slow reaction kinetics and high OER overpotential, The rate and efficiency of the electrolytic water reaction are greatly inhibited, hindering its large-scale commercial application. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B1/04
CPCC25B11/091C25B1/04Y02E60/36
Inventor 卢超李明明张傲汪玉洁杨智孔清泉冯威王小炼安旭光吴小强
Owner CHENGDU UNIV
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