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Method for preparing bifunctional electrolyzed water catalyst based on mercaptobenzothiazole

A technology of mercaptobenzothiazole and catalyst, which is applied in the direction of electrolysis components, electrolysis process, electrodes, etc., can solve the problems of unremarkable HER performance, hindering the development of nickel-iron hydrotalcite, poor conductivity and stability, etc., and achieve easy purchase and Preparation, ease of large-scale production, and improved stability

Active Publication Date: 2021-11-19
保时来新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a typical hydrotalcite-based catalyst, nickel-iron-iron hydrotalcite has excellent OER performance but not outstanding HER performance.
And the separate hydrotalcite-like materials have problems such as poor conductivity and poor stability.
These issues hamper the development of nickel-iron-iron hydrotalcites as bifunctional electrocatalysts

Method used

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  • Method for preparing bifunctional electrolyzed water catalyst based on mercaptobenzothiazole
  • Method for preparing bifunctional electrolyzed water catalyst based on mercaptobenzothiazole
  • Method for preparing bifunctional electrolyzed water catalyst based on mercaptobenzothiazole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take several pieces of nickel foam with a size of 1.5cm×1cm and put them into 3mol·L -1 Ultrasonic in the hydrochloric acid solution for 30min, after 30min, take out the nickel foam and rinse it with deionized water, and then sonicate in ethanol and deionized water for 5min respectively. Put the processed nickel foam into an oven at 50°C to dry for 6 hours, and set aside;

[0030] Weigh 0.084g MBT (2-mercaptobenzothiazole) at room temperature and disperse it in 15mL N,N-dimethylformamide (DMF) to form a transparent light yellow homogeneous solution A. Weigh 0.146g Ni(NO 3 ) 2 ·6H 2 O, 0.101g Fe(NO 3 ) 3 9H 2 O and 0.132g (NH 4 )6 Mo 7 o 24 ·6H 2 O was dissolved in 15 mL of DMF, and magnetically stirred at 600 rpm for 2 h at room temperature to completely dissolve to form a light green solution B. After mixing solution A and solution B, stir magnetically for 2 hours to form a bright yellow homogeneous solution. Transfer the mixed solution to a polytetrafluoroet...

Embodiment 2

[0032] Take several pieces of nickel foam with a size of 1.5cm×1cm and put them into 3mol·L -1 Ultrasonic in the hydrochloric acid solution for 30min, after 30min, take out the nickel foam and rinse it with deionized water, and then sonicate in ethanol and deionized water for 5min respectively. Put the processed nickel foam into an oven at 50°C to dry for 6 hours, and set aside;

[0033] Weigh 0.132g MBT (2-mercaptobenzothiazole) at room temperature and disperse it in 15mL N,N-dimethylformamide (DMF) to form a transparent light yellow homogeneous solution A. Weigh 0.146g Ni(NO 3 ) 2 ·6H 2 O, 0.101g Fe(NO 3 ) 3 9H 2 O and 0.092g (NH 4 ) 6 Mo 7 o 24 ·6H 2 O was dissolved in 15 mL of DMF, and magnetically stirred at 600 rpm for 2 h at room temperature to completely dissolve to form a light green solution B. After mixing solution A and solution B, stir magnetically for 2 hours to form a bright yellow homogeneous solution, transfer the mixed solution to a polytetrafluoro...

Embodiment 3

[0035] Take several pieces of nickel foam with a size of 1.5cm×1cm and put them into 3mol·L -1 Ultrasonic in the hydrochloric acid solution for 30min, after 30min, take out the nickel foam and rinse it with deionized water, and then sonicate in ethanol and deionized water for 5min respectively. Put the processed nickel foam into an oven at 50°C to dry for 6 hours, and set aside;

[0036] Weigh 0.054g MBT (2-mercaptobenzothiazole) at room temperature and disperse it in 15mL N,N-dimethylformamide (DMF) to form a transparent light yellow homogeneous solution A. Weigh 0.146g Ni(NO 3 ) 2 ·6H 2 O, 0.101g Fe(NO 3 ) 3 9H 2 O and 0.182g (NH 4 ) 6 Mo 7 o 24 ·6H 2 O was dissolved in 15 mL of DMF, and magnetically stirred at 600 rpm for 2 h at room temperature to completely dissolve to form a light green solution B. After mixing solution A and solution B, stir magnetically for 2 hours to form a bright yellow homogeneous solution, transfer the mixed solution to a polytetrafluoro...

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Abstract

A molybdenum-nickel-iron hydrotalcite-like / nanocarbon bifunctional catalyst is synthesized on a foamed nickel conductive substrate in situ in one step by utilizing strong complexing action of an antirust agent molecule 2-mercaptobenzothiazole on metal ions and the characteristic that ammonia gas released in the heating process provides alkaline conditions. According to the method, the harsh high-temperature condition of the organic molecule derived carbon-based catalyst is avoided, and the molecular characteristics of a metal complex in a precursor solution can enable the metal nanoparticles to be uniformly dispersed on a nanocarbon carrier, so that the specific surface area and active sites are increased; and the electron transfer rate, the electrical conductivity and the stability are accelerated through the contact and the interaction between the metal variety and the carbon material, so that the good electro-catalysis performance is provided, and the important thought and the important method are provided for the development of a potential difunctional water electrolysis catalyst.

Description

Technical field: [0001] The invention belongs to the field of new energy material technology and electrocatalysis technology, and specifically relates to a method for one-step in-situ synthesis of molybdenum-nickel-iron-type hydrotalcite / nano-carbon / foam nickel dual-functional electrocatalyst by solvothermal method, which also includes the catalyst on the alkaline electrolysis water anode Electrocatalytic applications for oxygen evolution reaction, cathodic hydrogen evolution reaction and total water splitting. Background technique: [0002] Water electrolysis is considered to be one of the most promising hydrogen production technologies. However, the large-scale commercial application of electrolyzed water is limited by the following three aspects: (i) a large overpotential is still required to drive the overall water splitting (relative to the theoretical potential of 1.23V for water splitting); (ii) the stability of the catalyst is poor. ; (iii) the high cost of noble me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/091C25B1/04B82Y40/00
CPCC25B11/091C25B1/04B82Y40/00Y02E60/36
Inventor 詹天荣王超钱星叶琳王军丁瑶温永红王磊
Owner 保时来新材料科技(苏州)有限公司
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