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a tio 2 -wo 3 /rgo composite photoelectric energy storage material and its preparation method and application

An energy storage material, tio2-wo3 technology, applied in the field of TiO2-WO3/rGO composite photoelectric energy storage material and its preparation, can solve the problems of less photogenerated electron transport, capture and assist storage, and improve the electrochemical cycle stability , good cathodic polarization, good effect

Active Publication Date: 2020-02-04
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its role in the transport, capture and storage of photogenerated electrons in the field of photoelectrochemical cathodic protection has been rarely mentioned.

Method used

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  • a tio <sub>2</sub> -wo <sub>3</sub> /rgo composite photoelectric energy storage material and its preparation method and application
  • a tio <sub>2</sub> -wo <sub>3</sub> /rgo composite photoelectric energy storage material and its preparation method and application
  • a tio <sub>2</sub> -wo <sub>3</sub> /rgo composite photoelectric energy storage material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] TiO for sustained photoelectrochemical cathodic protection 2 -WO 3 Preparation of / rGO composite photovoltaic energy storage photoanode:

[0042] 1) First, a certain amount of GO was added to ethanol and dispersed by ultrasonic vibration for 2 hours to form a stable dispersion of GO with a concentration of 0.5 mg / mL.

[0043] 2) WO 3 / rGO nanorod composites were prepared based on a simple solvothermal method and in situ growth method: the GO stable dispersion obtained in step 1) was added to the homogeneous solution (accounting for WO 3 0.1wt% of the mass), stirred evenly to form a homogeneous solution, then transferred to a polytetrafluoroethylene-lined stainless steel reactor, and centrifuged to collect the blue precipitate after hydrothermal heating at 180°C for 24 hours, and washed several times with ethanol . The product was ground in an agate mortar for further characterization.

[0044] Among them, the homogeneous solution is: under magnetic stirring, WCl 6...

Embodiment 2

[0054] TiO for sustained photoelectrochemical cathodic protection 2 -WO 3 Preparation of / rGO composite photovoltaic energy storage photoanode:

[0055] 1) First, a certain amount of GO was added to ethanol and dispersed by ultrasonic vibration for 2 hours to form a stable dispersion of GO with a concentration of 0.5 mg / mL.

[0056] 2) WO 3 / rGO nanorod composites were prepared based on a simple solvothermal method and in situ growth method: the GO stable dispersion obtained in step 1) was added to the homogeneous solution (according to WO 3 0.2wt% of the mass), stirred evenly to form a homogeneous solution, then transferred to a polytetrafluoroethylene-lined stainless steel reactor, and centrifuged to collect the blue precipitate after hydrothermal heating at 180°C for 24 hours, and washed several times with ethanol . The product was ground in an agate mortar for further characterization.

[0057] Among them, the homogeneous solution is: under magnetic stirring, WCl 6 (...

Embodiment 3

[0065] TiO for sustained photoelectrochemical cathodic protection 2 -WO 3 Preparation of / rGO composite photovoltaic energy storage photoanode:

[0066] 1) First, a certain amount of GO was added to ethanol and dispersed by ultrasonic vibration for 2 hours to form a stable dispersion of GO with a concentration of 0.5 mg / mL.

[0067] 2) WO 3 / rGO nanorod composites were prepared based on a simple solvothermal method and in situ growth method: the GO stable dispersion obtained in step 1) was added to the homogeneous solution (according to WO 3 0.3wt% of the mass), stirred evenly to form a homogeneous solution, then transferred to a polytetrafluoroethylene-lined stainless steel reactor, and centrifuged to collect the blue precipitate after hydrothermal heating at 180°C for 24 hours, and washed several times with ethanol . The product was ground in an agate mortar for further characterization.

[0068] Among them, the homogeneous solution is: under magnetic stirring, WCl 6 (...

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Abstract

The invention belongs to the field of photoelectrochemical cathodic protection and particularly relates to a TiO2-WO3 / rGO composite photoelectric energy storage material and a preparation method and application of the TiO2-WO3 / rGO composite photoelectric energy storage material. The composite photoelectric energy storage material is a WO3 / rGO nanorod composite and TiO2 powder, wherein the mass ratio of the WO3 / rGO nanorod composite to the TiO2 powder is 1 to 1; and after the prepared TiO2-WO3 / rGO composite photoelectric energy storage photoanode is coupled with 304 stainless steel, the self-corrosion potential of the 304 stainless steel can be reduced, and the photoinduced potential and the photo-generated current density both show a slow return rate in the dark state after the light is cut off, and it is indicated that the good continuous cathodic protection function is provided. By the adoption of the TiO2-WO3 / rGO composite photoelectric energy storage material and the preparation method and application, the operation steps are simple, and the problem of continuous cathodic protection under cloudy and dark conditions is solved.

Description

technical field [0001] The invention belongs to the field of photoelectrochemical cathodic protection, in particular, the invention relates to a TiO 2 -WO 3 / rGO composite photoelectric energy storage material and its preparation method and application. Background technique [0002] Metal corrosion brings serious economic losses and is accompanied by environmental pollution. In the face of increasing energy consumption and serious environmental problems, it is urgent to develop anti-corrosion technologies that are environmentally friendly and utilize clean energy. In the past 20 years, studies have found that the photovoltaic effect of semiconductors can provide photogenerated electrons for coupled metal substrates and provide cathodic protection. Photogenerated electrons can be excited by light irradiation, and if a sufficient number of photogenerated electrons are transferred and accumulated on the coupled metal, effective photoelectrochemical cathodic protection can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/12C23F13/12
CPCC23C18/1216C23C18/1245C23F13/12
Inventor 陈卓元姜旭宏孙萌萌荆江平
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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