A sea urchin-like p-doped zrmo 2 o 8 Preparation method of nano catalyst

A nano-catalyst and sea urchin-like technology, which is applied in the field of preparation of sea urchin-like P-doped ZrMo2O8 nano-catalysts, can solve the problems that the catalytic performance cannot reach the catalytic performance of noble metals, the cathode oxygen reduction reaction is slow, and it is not suitable for large-scale production. Improve the electrocatalytic oxygen reduction catalytic performance, improve the electrochemical performance, and be suitable for large-scale production

Active Publication Date: 2021-12-14
淮北德昇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one of the main disadvantages of fuel cells is that the cathode oxygen reduction reaction (ORR) is very slow, which greatly limits the performance of the entire cell, so a cathode oxygen reduction catalyst is required to accelerate the ORR reaction.
At present, the mainstream oxygen reduction catalysts on the market are Pt-based noble metal catalysts. These catalysts have good catalytic performance and stability, but are expensive and not suitable for large-scale production. Therefore, the development of cheap non-noble metal oxygen reduction catalysts is a current research hotspot.
[0004] Non-noble metal catalysts are cheap, and the research on non-noble metal materials mainly includes transition metals and carbon-based materials, but the catalytic performance of these catalysts is far from that of noble metals

Method used

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  • A sea urchin-like p-doped zrmo <sub>2</sub> o <sub>8</sub> Preparation method of nano catalyst
  • A sea urchin-like p-doped zrmo <sub>2</sub> o <sub>8</sub> Preparation method of nano catalyst
  • A sea urchin-like p-doped zrmo <sub>2</sub> o <sub>8</sub> Preparation method of nano catalyst

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Experimental program
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Effect test

Embodiment 1

[0026] A sea urchin-like P-doped ZrMo 2 o 8 Nanocatalyst, prepared by the following steps:

[0027] S1: Weigh 2g of zirconium nitrate and 1.5g of sodium molybdate into 50ml of deionized water, sonicate for 30 minutes to dissolve completely, then drop ammonia water into the solution, adjust the pH of the solution to 8.2, let the solution stand for 7 hours, and then use Rinse the product 5 times with deionized water and ethanol;

[0028] S2: Add the S1 product into deionized water, stir for 20 minutes to disperse evenly, then add 0.4g sodium hypophosphite, continue stirring for 15 minutes, then transfer the mixed solution into a polytetrafluoroethylene reactor, and conduct a hydrothermal reaction at 120°C for 12 hours. After the reaction, ultrasonic cleaning with deionized water 4 times;

[0029] S3: Add the S2 product into 25ml of N, N-dimethylformamide, mix it evenly with ultrasound, then add 0.5g of F127, stir for 25min, transfer the beaker containing the mixed solution in...

Embodiment 2

[0032] A sea urchin-like P-doped ZrMo 2 o 8 Nanocatalyst, prepared by the following steps:

[0033] S1: Weigh 2g of zirconium nitrate and 1g of sodium molybdate into 40ml of deionized water, sonicate for 20min to dissolve completely, then add ammonia water dropwise into the solution, adjust the pH of the solution to 8, let the solution stand for aging for 6h, and then use Wash the product 4 times with deionized water and ethanol;

[0034] S2: Add the S1 product into deionized water, stir for 20 minutes to disperse evenly, then add 0.34g of sodium hypophosphite, continue stirring for 10 minutes, then transfer the mixed solution into a polytetrafluoroethylene reactor, and conduct a hydrothermal reaction at 100°C for 15 hours. After the reaction, ultrasonic cleaning with deionized water 4 times;

[0035] S3: Add the S2 product into 24ml of N, N-dimethylformamide, and mix it evenly with ultrasound, then add 0.4g of F127, stir for 20min, transfer the beaker containing the mixed ...

Embodiment 3

[0038] A sea urchin-like P-doped ZrMo 2 o 8 Nanocatalyst, prepared by the following steps:

[0039] S1: Weigh 2g of zirconium nitrate and 2g of sodium molybdate into 60ml of deionized water, sonicate for 40 minutes to dissolve completely, then add ammonia water dropwise into the solution, adjust the pH of the solution to 8.5, let the solution stand for aging for 8 hours, and then use it Rinse the product 6 times with deionized water and ethanol;

[0040] S2: Add the S1 product into deionized water, stir for 30 minutes to disperse evenly, then add 0.5g of sodium hypophosphite, continue stirring for 20 minutes, then transfer the mixed solution into a polytetrafluoroethylene reactor, and conduct a hydrothermal reaction at 150°C for 10 hours. After the reaction, ultrasonic cleaning with deionized water 5 times;

[0041] S3: Add the S2 product to 26ml of N,N-dimethylformamide, mix it evenly by ultrasonic, then add 0.67g of F127, stir for 30min, transfer the beaker containing the...

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Abstract

The invention discloses a sea urchin-like P-doped ZrMo 2 o 8 The preparation method of nanometer catalyst comprises the following raw materials: zirconium nitrate, sodium molybdate, ammoniacal liquor, sodium hypophosphite, poloxamer F127, N, N-dimethylformamide, and the preparation method comprises the following steps: first zirconium nitrate and Sodium molybdate was added to deionized water, the pH was adjusted by ammonia water, and then hydrothermal phosphating was carried out in the liquid phase by sodium hypophosphite, and finally the sea urchin-like P-doped ZrMo was obtained by reacting with surfactant poloxamer F127. 2 o 8 nanocatalyst. Sea urchin-like P-doped ZrMo prepared by the present invention 2 o 8 The nano-catalyst has a large surface area, can effectively catalyze the oxygen reduction reaction, and has higher catalytic activity than the Pt / C catalyst, is suitable for large-scale production, and has great application prospects.

Description

technical field [0001] The invention relates to the field of nano catalysts, specifically, a sea urchin-like P-doped ZrMo 2 o 8 Preparation methods of nanocatalysts. Background technique [0002] The growth of the world population and the rapid development of the modern economy will make the global energy demand continue to grow in the future. Currently, the vast majority of energy comes from fossil fuels such as coal, oil, and natural gas. The depletion of non-renewable fossil fuels and the adverse impact of fossil fuel use on the environment have stimulated the demand and research on innovative technologies such as conversion and storage of sustainable clean energy (such as electricity, hydrogen, etc.). In order to solve the threat to human development and the growing energy shortage, the exploration and utilization of new clean energy is imminent. [0003] Fuel cells are one of the technologies for clean and efficient conversion and utilization of energy in portable e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/90B82Y30/00
CPCY02E60/50
Inventor 宋强
Owner 淮北德昇科技有限公司
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