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A light-induced methanol fuel cell at room temperature

A methanol fuel cell, light-induced technology, applied in solar cells, circuits, electrical components, etc., to achieve the effects of good dispersion, strong photocurrent response, and good electrochemical performance

Active Publication Date: 2019-01-04
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing methanol fuel cells have the disadvantage of needing to work under high temperature conditions
[0003] TiO 2 It is a commonly used photocatalyst, because of its biological inertness, strong oxidizing ability, high physical and chemical stability, cheap and easy to obtain, non-toxic and pollution-free, high photocatalytic activity, wide resources and strong redox ability, it is widely used in solar cells has been widely used; but due to TiO 2 The inherent bandgap width is wide (3.2eV), and it can only absorb in the ultraviolet region (wavelength less than 380nm), thus limiting TiO 2 Practical applications that utilize sunlight

Method used

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  • A light-induced methanol fuel cell at room temperature
  • A light-induced methanol fuel cell at room temperature
  • A light-induced methanol fuel cell at room temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Brown TiO based on FTO conductive glass 2 Microsphere thin film electrode

[0025] The preparation method is as follows:

[0026] 1) At room temperature, add 100mL of ethylene glycol into the round bottom flask, add 40mL of tetrabutyl titanate under stirring, and pass N 2 Exhaust the air in the system, then seal and stir for 3 hours. After the end, quickly pour the mixture into the mixed solution of 100mL acetone and 4mL distilled water, stir for 20min, let it stand for 2h, centrifuge and wash it twice with acetone and absolute ethanol , the sample was dried to give a white solid.

[0027] 2) Take the white solid sample dried in step 1), add 80mL of distilled water, transfer to a 100mL autoclave, and conduct a hydrothermal reaction at 180°C for 4h. After the reaction, it was naturally cooled to room temperature. After washing several times with water and absolute ethanol, centrifugation and drying, TiO 2 White solid powder.

[0028] 3) Take a small amount of T...

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Abstract

The invention relates to a light-induced methanol fuel cell at room temperature. The adopted technical scheme is as follows: brown TiO2 microsphere thin film electrode based on FTO conductive glass isused as a working electrode, and the anodic oxidation of methanol is induced directly by a solar excitation electrode. A spring Pt wire electrode is used as a counter electrode and Ag / AgCl is used asreference electrode. Electrodes at two sides are connected by a salt bridge. The invention can realize the anodic oxidation reaction of methanol induced by directly utilizing the solar excitation electrode at room temperature. Using brown TiO2 microspheres as photoelectrochemical methanol fuel cells, showing excellent photoelectrochemical properties, after illumination, the photocurrent density is increased by 20%, the open circuit voltage is 1.3 V, and the power density is increased by 35%. The solar energy and chemical energy can be converted into electric energy synergistically, which is easy to operate and low in cost. It is favorable for the popularization and application of the material in industrial production, and its practicality and commercialization can be realized.

Description

technical field [0001] The invention relates to the technical field of material preparation for fuel cells, in particular to a brown porous TiO-based 2 Photoanode for room-temperature light-induced methanol fuel cells. Background technique [0002] Nowadays, with the rapid development of my country's economy and the rapid consumption of energy, environmental protection and sustainable development have become one of the most important issues in human production and life. Therefore, the establishment of a new, efficient, clean, renewable and safe energy material has become a national Even the goal of the world's joint efforts. Methanol fuel cells are attracting more and more attention due to their high energy density, abundant sources of raw materials, reduced consumption of fossil fuels, low operating temperature, easy handling of liquid fuels, and no pollution to the environment. It does not need to store a large amount of electrolyte, and the device is simple and easy to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M14/00H01M16/00
CPCH01M14/005H01M16/003Y02B90/10Y02E60/50
Inventor 张宇孙维宁王艳明王宝鑫宋溪明
Owner LIAONING UNIVERSITY
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