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Oxygen evolution reaction electrocatalyst and preparation method thereof

A technology of oxygen evolution reaction and electrocatalyst, which is applied in the field of electrocatalysis, can solve the problems of multi-step, waste of time and energy, and achieve the effects of saving time, good stability, stability and low cost

Active Publication Date: 2021-08-10
RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the current research, black phosphorus is combined with transition metal sulfides and phosphides to form heterostructures, and metal particles are loaded on the surface of black phosphorus nanosheets to improve the catalytic performance; however, the preparation of the above-mentioned black phosphorus-based composite materials requires many steps, wasting time and energy

Method used

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  • Oxygen evolution reaction electrocatalyst and preparation method thereof
  • Oxygen evolution reaction electrocatalyst and preparation method thereof
  • Oxygen evolution reaction electrocatalyst and preparation method thereof

Examples

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Embodiment 1

[0033] A preparation method of an oxygen evolution reaction electrocatalyst according to an embodiment of the present invention uses electrochemical exfoliation to prepare a composite material BP (metal A x Metal B y ); wherein, the composite material is formed by applying a voltage to reduce the metal element in the metal salt into the black phosphorus (BP) nanosheet in situ. Among them, black phosphorus (BP) nanosheets such as figure 1 shown.

[0034] Exemplarily, the anode is clamped with platinum wire, the cathode clamp is clamped with an electrode clamp of 10-80 mg black phosphorus block, and the cathode and the cathode are inserted into the electrolytic cell. mol*x metal salt A, 0.015mol*y metal salt B and 10 ~ 80ml N, N-dimethylformamide solution, and then apply a constant and suitable voltage (optional, measure the applied voltage with a constant voltage meter, the voltage range 5~30V), perform electrochemical stripping and metal salt reduction, centrifuge after str...

Embodiment 2

[0038] A preparation method of an oxygen evolution reaction electrocatalyst according to an embodiment of the present invention, the oxygen evolution reaction electrocatalyst is BP(Ni 3 Mo 1 ), the specific steps include: the anode is clamped with platinum wire, the cathode clamp is clamped with an electrode clamp of 10-80 mg black phosphorus block, the cathode and the cathode are inserted into the electrolytic cell, and there is 0.1 to 0.8 g of tetrabutyl ammonium tetrafluoroborate in the electrolytic cell , 0.015mol*3 anhydrous nickel chloride, 0.015mol*1 anhydrous molybdenum pentachloride and 10 ~ 80mlN, N-dimethylformamide solution, and then apply a constant and suitable voltage (optional, by constant voltage The applied voltage is measured by the electric meter, the voltage range is 5-30V), and electrochemical stripping and metal salt reduction are carried out. After stripping and reduction, centrifuge, wash, and dry to obtain the composite material BP (Ni 3 Mo 1 ).

...

Embodiment 3

[0041] A preparation method of an oxygen evolution reaction electrocatalyst according to an embodiment of the present invention, the oxygen evolution reaction electrocatalyst is BP(Ni 3 Fe 1 ), the specific steps include: the anode is clamped with platinum wire, the cathode clamp is clamped with an electrode clamp of 10-80 mg black phosphorus block, the cathode and the cathode are inserted into the electrolytic cell, and there is 0.1-0.8 g tetrabutylammonium tetrafluoroborate in the electrolytic cell , 0.015mol*3 anhydrous nickel chloride, 0.015mol*1 anhydrous ferric chloride and 10-80ml N, N-dimethylformamide solution, and then apply a constant and suitable voltage (optional, by constant The piezoelectric meter measures the applied voltage, the voltage range is 5 ~ 30V), and electrochemical stripping and metal salt reduction are carried out. After stripping and reduction, centrifuge, wash, and dry to obtain the composite material BP (Ni 3 Fe 1 ).

[0042] see Figure 4 , ...

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Abstract

The invention discloses an oxygen evolution reaction electrocatalyst and a preparation method thereof. The oxygen evolution reaction electrocatalyst is a BP (metal Ax metal By) composite material, wherein BP is black phosphorus nanosheets, the metal A and the metal B are transition metal elements respectively, and x:y is the molar weight ratio of metal salts of the metal A and the metal B. Compared with a noble metal catalyst, the black phosphorus-based catalyst prepared by the invention has the advantages that the cost is low, but the catalytic performance and stability are comparable to those of the noble metal catalyst; and compared with other black phosphorus-based composite catalysts, black phosphorus-based catalyst prepared by the invention is simple in method, and the time cost and the energy cost can be saved.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, in particular to an electrocatalyst for oxygen evolution reaction and a preparation method thereof. Background technique [0002] The gradual depletion of fossil fuels and the resulting environmental and climate problems have prompted people to develop and use clean and renewable energy to reduce dependence on fossil fuels. Clean renewable energy includes solar energy, wind energy, tidal energy, geothermal energy, geothermal energy, and nuclear energy, among others. [0003] Electrolyzed water and metal-air battery technology are relatively feasible technologies for providing clean and renewable energy. However, because there is an energy barrier for the reaction, it is necessary to find an oxygen evolution reaction electrocatalyst with better oxygen evolution performance. [0004] At present, the oxygen evolution reaction electrocatalysts with better oxygen evolution performance includ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/091
CPCC25B1/04Y02E60/36
Inventor 戴正飞翟文芳刘航
Owner RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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