Preparation method and application of hydrogen evolution catalytic material Pt-CoP

A pt-cop, sodium borohydride technology, applied in chemical instruments and methods, inorganic chemistry, cobalt compounds, etc., can solve problems such as poor catalytic performance, increase electrochemical active surface area, facilitate contact, excellent hydrogen Effects of precipitation performance and stability

Active Publication Date: 2021-05-11
INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of the poor catalytic performance of existing electrocatalytic hydrogen production catalysts, and firstly provides a method for preparing hydrogen evolution material Pt-CoP

Method used

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  • Preparation method and application of hydrogen evolution catalytic material Pt-CoP
  • Preparation method and application of hydrogen evolution catalytic material Pt-CoP
  • Preparation method and application of hydrogen evolution catalytic material Pt-CoP

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Embodiment 1

[0039] A preparation method of hydrogen evolution electrocatalytic material Pt-CoP is as follows:

[0040] (1) Pour 7.5mL of aqueous solution dispersed with 75mg of polyvinylpyrrolidone and 65mg of squaraine into 2.5mL of methanol solution of 141.2mg of cobalt nitrate, sonicate for 1min, let stand for 72h, wash with water three times, and centrifuge at 8000rpm for 5min , freeze-dried to obtain a pink powder;

[0041] (2) Place the pink powder prepared in (1) in argon, then raise the temperature to 400°C at 1°C / min, and keep it warm for 2h to obtain the precursor powder;

[0042] (3) Take 0.05g of the precursor powder and 0.8g of sodium hypophosphite prepared in (2) and place them in argon, and place the precursor powder at the gas outlet of the tube furnace, below the sodium hypophosphite. Then the temperature was raised to 350°C at 5°C / min, and kept for 2 hours to obtain a black powder CoP;

[0043] (4) Take 25 mg of the black powder prepared in (3) and disperse it in 2.5 m...

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Abstract

The invention belongs to the technical field of water electrolysis hydrogen production, and discloses a preparation method and application of a hydrogen evolution material Pt-CoP, MoF is used as a frame, and a dice-shaped hollow structure is finally obtained by adopting a self-template method, P treatment, high-temperature calcination in argon and reduction. According to the structure, the electrochemical active surface area is effectively increased, contact between the material and electrolyte is facilitated, the mass transfer rate is accelerated, and the catalytic performance is effectively improved. The dice-shaped hollow CoP carrier is prepared, the contact area of an electrolyte and active sites is greatly increased, and the mass transfer rate is increased. Due to introduction of Pt, the content of precious metal is reduced, an electronic structure is modified, and electrons are transferred from Pt to a CoP carrier. The synergistic effect between Pt and CoP improves the catalytic performance of the material. In an acidic solution, Pt-CoP shows excellent hydrogen evolution performance and stability, and is suitable for producing hydrogen by electrolyzing water.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production by electrolysis of water, and more specifically relates to a preparation method and application of a hydrogen evolution material Pt-CoP. Background technique [0002] With the increasingly serious energy and environmental problems, it is imminent to develop and explore green and clean new energy sources. Since hydrogen energy has many advantages, such as abundant resources, high calorific value, and no pollution, it is regarded as the most ideal and most alternative new energy source. At present, hydrogen production by electrolysis of water has attracted widespread attention due to its low cost and environmental friendliness. As a half-reaction for water electrolysis, the hydrogen evolution reaction requires an electrocatalyst with fast kinetics and low potential. Commercial Pt is the most efficient catalyst for hydrogen production in water electrolysis, but its high price and resour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/091C25B1/04B22F9/24C01G51/00
CPCC25B1/04B22F9/24C01G51/00Y02E60/36
Inventor 商超群林琴王新
Owner INT ACAD OF OPTOELECTRONICS AT ZHAOQING SOUTH CHINA NORMAL UNIV
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