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Polythiophene compound/carbon fiber cloth water decomposition oxygen production electrode and preparation method thereof

A carbon fiber cloth and polythiophene technology, which is applied in the field of polythiophene compound/carbon fiber cloth for decomposing water for oxygen production and its preparation, can solve the problems of electrochemical stability obstacles of polymer electrodes, and achieves large-scale production and is easy to use. Control, high active effect

Pending Publication Date: 2021-09-03
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Suitable energy band structures of polymers can help dissociate water molecules and provide high activity for oxygen evolution reactions, but the electrochemical stability of polymer electrodes is still a major obstacle for practical applications.

Method used

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  • Polythiophene compound/carbon fiber cloth water decomposition oxygen production electrode and preparation method thereof
  • Polythiophene compound/carbon fiber cloth water decomposition oxygen production electrode and preparation method thereof
  • Polythiophene compound/carbon fiber cloth water decomposition oxygen production electrode and preparation method thereof

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preparation example Construction

[0033] The preparation method of the polythiophene compound / carbon fiber cloth splitting water and oxygen production electrode of the present invention comprises the following steps.

[0034] First, an acetonitrile solution was prepared by dissolving a thiophene-based monomer and lithium perchlorate as an electrolyte in acetonitrile. In an embodiment of the present invention, the thiophene monomer used is at least one selected from thiophene and thiophene whose position 3 is substituted by an alkyl chain with 1-6 carbon atoms. The concentration of lithium perchlorate in the acetonitrile solution is 0.1-0.2 mol / L, and the concentration of thiophene monomers is 0.005-0.01 mol / L.

[0035] Ultrasonic treatment of carbon fiber cloth with nitric acid, dipping an appropriate area of ​​carbon fiber cloth in the acetonitrile solution, using carbon fiber cloth as a working electrode, and using a constant voltage electrochemical deposition method to polymerize thiophene as a monomer on t...

Embodiment 1

[0037] A 0.5cm×0.5cm carbon fiber cloth (as a practical example, the actual area is more clearly recorded.) was ultrasonically treated with 1mol / L nitric acid for 5 minutes, and then ultrasonically cleaned with ethanol and water for later use. In the acetonitrile solution containing 0.1mol / L lithium perchlorate and 0.005M thiophene monomer, carbon fiber cloth treated with nitric acid was used as the working electrode, titanium mesh and saturated calomel electrode were used as the counter electrode and reference electrode to form three electrodes System, under the applied voltage of 1.73V, conduct constant current deposition for 3 hours, so that thiophene monomers are polymerized on the carbon fiber cloth in situ to form a polythiophene film. After the electrodeposition process, the working electrode was taken out and soaked in pure water for 30 minutes to remove impurities, and then air-dried to obtain a polythiophene / carbon fiber cloth decomposing water oxygen production elect...

Embodiment 2

[0039] A 0.5cm×0.5cm carbon fiber cloth was ultrasonically treated with 1mol / L nitric acid for 5 minutes, and then ultrasonically cleaned with ethanol and water for later use. In the acetonitrile solution containing 0.1mol / L lithium perchlorate and 0.005mol / L thiophene monomer, the carbon fiber cloth treated with nitric acid was used as the working electrode, and the titanium mesh and saturated calomel electrode were used as the counter electrode and reference electrode. Three-electrode system, galvanostatic deposition at an applied voltage of 1.73 V for 0.5 h. After the electrodeposition process, the working electrode was taken out and soaked in pure water for 30 minutes to remove impurities, and then air-dried to obtain a polythiophene / carbon fiber cloth decomposing water oxygen production electrode. The thickness of the polythiophene film was 20nm. Under the voltage of 1.7V relative to the standard hydrogen electrode, the current density of the obtained polythiophene / carbon...

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Abstract

The invention relates to a polythiophene compound / carbon fiber cloth water decomposition oxygen production electrode and a preparation method thereof. In the preparation method, a thiophene monomer, lithium perchlorate and carbon fiber cloth are used as raw materials, and the polythiophene compound / carbon fiber cloth composite oxygen production electrode is obtained by an electrochemical deposition method. The method has the characteristics of being simple in manufacturing process, green, safe, low in cost and good in performance, and industrial production can be realized. The product has very wide application potential in the fields of electro-catalysis water decomposition, energy conversion, storage and the like.

Description

technical field [0001] The invention belongs to the field of semiconducting polymer electrocatalytic water splitting, in particular to a polythiophene compound / carbon fiber cloth splitting water oxygen production electrode and a preparation method thereof. Background technique [0002] With the progress of society and the development of science and technology, people's living standards have been greatly improved. At the same time, the energy problems brought about by social development have become increasingly prominent. Today, traditional primary energy still occupies a large proportion. The environmental problems and resource shortages brought about by it force us to develop green and sustainable new energy sources. Clean energy such as solar energy and wind energy can be directly converted into electrical energy, and the storage and conversion of this part of electrical energy is worthy of further research. A new way to solve the above problems is to split water into h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/052C25B11/065C25B11/085C25D9/02
CPCC25B1/04C25D9/02Y02P20/133
Inventor 李新昊张仕楠薛中华林秀林云霄苏慧陈接胜野田克敏后藤哲
Owner TOYOTA JIDOSHA KK
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