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Porous composite photoelectric energy storage material for photoinduced continuous cathodic protection as well as preparation and application of porous composite photoelectric energy storage material

A technology of energy storage material and cathodic protection, applied in metal material coating process, liquid chemical plating, coating and other directions, can solve the problem of reducing photocathode protection performance, photoelectrochemical response cathodic protection performance can not be sustained, low efficiency, etc. problems, to achieve the effect of enhancing photoelectric conversion and photocathode protection performance, strong photoelectric continuous cathodic protection performance, high storage and slow release performance

Active Publication Date: 2022-03-04
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional charge storage semiconductor transition metal oxide WO 3 , SnO 2 , although it has excellent electron storage performance, but the band gap is large and the light absorption range is narrow, and the photoelectric conversion efficiency is low, which reduces the photocathode protection performance while storing energy.
Multivariate transition metal sulfide ZnIn 2 S 4 , AgInS 2 , although it has a narrow band gap and a relatively negative conduction band potential, it has good photoelectrochemical and photocathode protection performance, but the dark state after illumination cannot provide delayed photocathode protection performance[2,3]
[0005] Therefore, in view of the major challenge currently facing the above-mentioned photocathode protection technology is that in the absence of light, the cathodic protection performance of the photoelectrochemical response cannot be continuously exerted and the efficiency is low. To provide a structure-optimized method for continuous protection in the dark state after light Nanocomposite semiconductor photoanode materials for sustainable photocathode protection of marine metals

Method used

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  • Porous composite photoelectric energy storage material for photoinduced continuous cathodic protection as well as preparation and application of porous composite photoelectric energy storage material
  • Porous composite photoelectric energy storage material for photoinduced continuous cathodic protection as well as preparation and application of porous composite photoelectric energy storage material
  • Porous composite photoelectric energy storage material for photoinduced continuous cathodic protection as well as preparation and application of porous composite photoelectric energy storage material

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Embodiment 1

[0045] TiO for sustained photoelectrochemical cathodic protection 2 / SnIn 4 S 8 Preparation of composite photoelectric energy storage photoanode (for the preparation process, see figure 1 ):

[0046] 1) TiO 2 Preparation of the porous substrate: place the pretreated substrate in the liner of the autoclave, with the conductive side facing down and place it at an angle of 45° to the wall of the autoclave, add solution a into the above autoclave to immerse the substrate, and then place it at 180°C Heated for 9 h to directly grow TiO with porous nanobush structure on the substrate 2 materials; then, after the reactor was cooled, the FTO conductive glass was taken out, washed with deionized water, and dried in an oven at 60°C. Finally, the prepared TiO 2 The nanomaterials were calcined in a tube furnace at 450°C for 1h, and the heating rate was 10°C / min, to obtain TiO 2 Porous substrates (see figure 2 ).

[0047] Described solution a is: take by weighing 0.002mol K 2 Ti...

Embodiment 2

[0055] 1) TiO 2 Preparation of the porous substrate: place the pretreated substrate in the liner of the autoclave, with the conductive side facing down and place it at an angle of 45° to the wall of the autoclave, add solution a into the above autoclave to immerse the substrate, and then place it at 180°C Direct growth of TiO with porous nanobush structure on the substrate by heating for 9 h 2 material (see figure 2 ); Then, after the reactor was cooled, the FTO conductive glass was taken out, washed with deionized water, and dried in an oven at 60°C. Finally, the prepared TiO 2 The nanomaterials were calcined in a tube furnace at 450°C for 1h, and the heating rate was 10°C / min, to obtain TiO 2 Nanoporous substrate (see figure 2 ).

[0056] Described solution a is: take by weighing 0.002mol K 2 TiO(C 2 o 4 ) 2 (Potassium titanium oxalate, PTO) was added with 10 mL of water, and then 20 mL of diethylene glycol DEG was added and the stirring continued for 20 minutes. ...

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Abstract

The invention belongs to the field of photoelectrochemical cathodic protection, and particularly relates to a porous composite photoelectric energy storage material (TiO2 / SnIn4S8) for photoinduced continuous cathodic protection as well as preparation and application of the porous composite photoelectric energy storage material. The composite photoelectric energy storage material is a porous composite photoelectric energy storage material obtained by in-situ growth of SnIn4S8 three-dimensional nanoflowers in gaps and at the upper part of a TiO2 nano bush. Valuable reference is provided for optimization design of a high-efficiency energy storage photoelectric material system and promotion of long-acting continuous photoelectric cathode protection of metal in a marine environment.

Description

technical field [0001] The invention belongs to the field of photoelectrochemical cathodic protection, in particular, the invention relates to a porous composite photoelectric energy storage material (TiO 2 / SnIn 4 S 8 ) and its preparation and application. Background technique [0002] Photocathodic protection (PCP) technology is a promising anti-corrosion technology for marine metals. This technology uses light energy in the ocean to generate photo-generated electrons through photoelectric conversion of semiconductor materials, and provides photo-generated electrons for metals for cathodic protection. However, the major challenge currently faced by photocathode protection technology is that the photoelectrochemical response cathodic protection performance cannot be exerted in the absence of light. [0003] In response to this problem, on the one hand, by optimizing the structure of the porous film layer, it is expected to improve the charge storage capacity, so that ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/12C23F13/20C23C18/12
CPCC23F13/12C23F13/20C23C18/1204C23C18/1216C23C18/1225
Inventor 孙萌萌鹿桂英姜旭宏
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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