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Synthetic method of sheet-shape Co2P-carbon cloth composite material

The technology of a composite material and a synthesis method is applied in the synthesis field of sheet-like Co2P-carbon cloth composite material, which can solve the problems of high overpotential, low electrochemical stability, low exchange current, etc., and achieve enhanced electrical conductivity and good durability. , the effect of improving stability

Inactive Publication Date: 2019-02-01
ANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Co 2 There are still many challenges in the synthesis of P electrocatalysts, including low electrochemical stability, low exchange current, and high overpotential, etc.

Method used

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  • Synthetic method of sheet-shape Co2P-carbon cloth composite material
  • Synthetic method of sheet-shape Co2P-carbon cloth composite material
  • Synthetic method of sheet-shape Co2P-carbon cloth composite material

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Experimental program
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Effect test

Embodiment 1

[0023] A flake Co 2 The synthetic method of P-carbon cloth composite material, comprises the following steps:

[0024] 1. Hydrothermal synthesis of Co(OH)(CO 3 ) 0.5 ·xH 2 O / CC compound: 1 mmol CoCl 2 and 3 mmol of urea were dissolved in 20 mL of deionized water, then the above solution was transferred to a polytetrafluoroethylene autoclave, and 0.5 mmol of CoCl was added 2 and 1.5mmol urea, put a piece of carbon cloth (2×2cm 2 ) were ultrasonically cleaned in methanol, ethanol and deionized water for 30 minutes, and then put into the above solution, and the autoclave was sealed and kept at 120°C for 12 hours; Washing in medium, and then vacuum drying at 60°C for 24 hours, the intermediate product Co(OH)(CO 3 ) 0.5 ·xH 2 O / CC;

[0025] 2. Phosphating process: carried out in a tube furnace, NaH 2 PO 2 and the intermediate product (according to the molar ratio of P and Co is 5:1) are respectively placed in two porcelain boats, which will contain NaH 2 PO 2 The porce...

Embodiment 2

[0027] A flake Co 2 The synthetic method of P-carbon cloth composite material, comprises the following steps:

[0028] 1. Hydrothermal synthesis of Co(OH)(CO 3 ) 0.5 ·xH 2 O / CC compound: 1 mmol CoCl 2 and 3 mmol of urea were dissolved in 20 mL of deionized water, then the above solution was transferred to a polytetrafluoroethylene autoclave, and 2 mmol of CoCl was added 2 and 6mmol urea, put a piece of carbon cloth (2×2cm 2 ) were ultrasonically cleaned in methanol, ethanol and deionized water for 30 minutes, and then put into the above solution, and the autoclave was sealed and kept at 120°C for 12 hours; Washing in medium, and then vacuum drying at 60°C for 24 hours, the intermediate product Co(OH)(CO 3 ) 0.5 ·xH 2 O / CC;

[0029]2. Phosphating process: carried out in a tube furnace, NaH 2 PO 2 and the intermediate product (according to the molar ratio of P and Co is 5:1) are respectively placed in two porcelain boats, which will contain NaH 2 PO 2 The porcelain ...

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Abstract

The invention discloses a synthetic method of a sheet-shape Co2P-carbon cloth composite material. The method comprises the following steps that 1, a Co (OH) (CO3) 0.5.xH2O / CC compound is synthesized through a hydrothermal method; 2, a phosphorization process is carried out. According to the method, the sheet-shape Co2P is successfully grown on the carbon cloth (Co2P-CC) through a simple method, and has relatively high electrocatalytic activity for a hydrogen evolution reaction under all PH values; and an electrochemical measurement result shows that the sheet-shape Co2P-CC shows up excellent hydrogen evolution activity, when a current density is 10 mA cm<-2>, the electric potential of the sheet-shape Co2P-CC is 103 mV, and a Tafel's slope is 80 mV decade<-1>.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a flaky Co 2 Synthesis method and application of P-carbon cloth composite material. Background technique [0002] In recent years, due to its environmental protection, cleanliness and low cost, hydrogen production by electrolysis of water has received great attention. At present, researchers have carried out a lot of work to develop high-efficiency electrocatalysts based on transition metal phosphides, such as Ni 2 P, Co. 2 P and Rh 2 P et al. Among many transition metal phosphide electrocatalysts, Co 2 P has been considered as a promising material for hydrogen production from water electrolysis due to its excellent catalytic activity and good electrical conductivity. However, Co 2 There are still many challenges in the synthesis of P electrocatalysts, including low electrochemical stability, low exchange current, and high overpotential, etc. [0003] Carbon cloth (CC),...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B11/091Y02E60/36
Inventor 杜记民钱永腾韩玉民王卫民李凯迪
Owner ANYANG NORMAL UNIV
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