Vanadium modified Cu2S self-supported electrode material, and synthesis method thereof

A technology of self-supporting electrode and synthesis method, applied in the direction of electrode, electrode shape/type, electrolysis process, etc., can solve the problems of harsh reaction conditions, complicated operation steps, complicated preparation process, etc., and achieve low synthesis temperature, cheap and easy-to-obtain raw materials , the effect of high purity

Active Publication Date: 2018-07-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although elemental copper has high crustal abundance, biological relevance, and rich chemical valence (Cu 0 , Cu I , Cu II and Cu III ) and rich chemical coordination, however, relatively little research has been done on copper-based compounds as catalysts for electrocatalytic water splitting
[0003] China Invention Announcement Patent No. 201610343133.8 discloses a noble metal nanocrystal loaded CuSbS 2 The preparation method of nanocrystals, the obtained composite material has excellent photocatalytic performance, and can be used in the field of photocatalysis, but the operation steps are complicated, and the reaction cycle is long, which makes the technology difficult
China Invention Announcement Patent No. 201610163670.4 discloses a self-assembled Cu with different shapes 2 The preparation of S nanomaterials is first reacted under the protection of nitrogen for 2~6 hours, and then calcined under inert gas to obtain self-assembled Cu with different shapes. 2 S nanomaterials, the preparation process is complicated, the reaction cycle is long, the reaction conditions are harsh, and the cost is high

Method used

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  • Vanadium modified Cu2S self-supported electrode material, and synthesis method thereof
  • Vanadium modified Cu2S self-supported electrode material, and synthesis method thereof
  • Vanadium modified Cu2S self-supported electrode material, and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) Soak the (2×5) cm foam copper in acetone for 5 minutes, then immerse it in 1 mol / L hydrochloric acid for 5 minutes, and finally wash it with ethanol and deionized water alternately for 3 times , after vacuum drying at 20 ℃ for 5 h, the treated copper foam was obtained;

[0026] (2) Choose sodium dodecahydrate vanadate and thioacetamide as raw materials, take sodium dodecahydrate vanadate as 0.2mmol, control the molar ratio of vanadium source and sulfur source to 1:1, and add it to 20 ml anhydrous In ethanol, stir magnetically at room temperature for 3 min to obtain suspension A;

[0027] (3) Put the stirred suspension A and the pretreated foamed copper in step (1) into a 50 mL polytetrafluoroethylene liner to seal, then put it in a homogeneous reactor for reaction, and react at 70°C The reaction time is 1 h;

[0028] (4) After the reaction was completed and cooled, the product was washed alternately with deionized water and ethanol three times, and then vacuum-dri...

Embodiment 2

[0030] (1) Soak the (2×5) cm foam copper in acetone for 5 minutes, then immerse it in 2 mol / L hydrochloric acid for 5 minutes, and finally wash it with ethanol and deionized water alternately for 3 times , after vacuum drying at 20 ℃ for 10 h, the treated copper foam was obtained;

[0031] (2) Choose sodium dodecahydrate vanadate and thioacetamide as raw materials, take sodium dodecahydrate vanadate as 0.4 mmol, control the molar ratio of vanadium source and sulfur source to 1:1, and add it to 25 ml anhydrous In the mixture of ethanol and water, stir magnetically at room temperature for 5 minutes to obtain suspension A;

[0032] (3) Put the stirred suspension A and the pretreated copper foam in step (1) into a 50 mL polytetrafluoroethylene liner to seal, then place it in a homogeneous reactor for reaction, and react at 100°C The time is to react under the condition of 5 h;

[0033] (4) After the reaction was completed and cooled, the product was washed alternately with deion...

Embodiment 3

[0035] (1) Soak the (2×5) cm foam copper in acetone for 5 minutes, then immerse it in 3mol / L hydrochloric acid for 10 minutes, and finally wash it with ethanol and deionized water alternately for 3 times. After vacuum drying at 30 °C for 5 h, the treated copper foam was obtained;

[0036] (2) Select sodium dodecahydrate vanadate and thioacetamide as raw materials, take 0.8 mmol of sodium dodecahydrate vanadate, control the molar ratio of vanadium source and sulfur source to 1:2, and add it to 30 ml of methanol at the same time , magnetically stirred at room temperature for 10 min to obtain suspension A;

[0037] (3) Put the stirred suspension A and the pretreated copper foam in step (1) into a 50 mL polytetrafluoroethylene liner to seal, then place it in a homogeneous reactor for reaction, and react at 120°C The time is to react under the condition of 10 h;

[0038] (4) After the reaction was completed and cooled, the product was washed alternately with deionized water and e...

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Abstract

The invention provides a synthesis method of a vanadium modified Cu2S self-supported electrode material. The synthesis method comprises following steps: clean copper foam is immersed into a suspensionliquid for solvothermal reaction so as to obtain the V modified Cu2S self-supported electrode material via full reaction, wherein in the suspension liquid, a vanadium source concentration is controlled to be 10 to 40mM, the molar ratio of the vanadium source to a sulfur source is controlled to be 1:(1-10). The invention also discloses the vanadium modified Cu2S self-supported electrode material prepared using the synthesis method. According to the synthesis method, one-step solvothermal reaction is adopted for direct synthesis of the finished product, synthesis temperature is low, operation is simple, reaction conditions are mild, the raw materials are cheap and easily available, cost is low, yield is high, no subsequent processing is needed, the synthesis method is friendly to the environment, and is suitable for large scale production.

Description

technical field [0001] The invention belongs to the technical field of electrode material surface treatment, in particular to a vanadium-modified Cu 2 Synthesis of S self-supporting electrode materials. Background technique [0002] Nowadays, with the rapid development of the economy, energy problems and environmental pollution problems are becoming more and more serious, and finding clean and sustainable energy is the breakthrough to solve these two problems. As a new generation of green and sustainable energy, people place high hopes on hydrogen energy. Water splitting technology is one of the effective ways to achieve sustainable production of hydrogen. However, the current commonly used water splitting catalysts are still based on noble metal Pt materials, which severely limits the scale and industrialization of water splitting. To solve this problem, people began to seek alternative Pt-based materials based on transition metal-based compounds with high crustal reserves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/03C25B11/04C25B1/04
CPCC25B1/04C25B11/03C25B11/04Y02E60/36
Inventor 曹丽云杨丹冯亮亮黄剑锋张宁杜盈盈
Owner SHAANXI UNIV OF SCI & TECH
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