Research progress and existing problems of photocathodic protection technology

CHEN Fan-wei; LIU Bin; JIAN Dong-hui; LIU Si-qi; LIU Shu-hui; XU Da-wei

doi:10.11868/j.issn.1001-4381.2021.000469

Cailiao gongcheng (Dec 2021)

Research progress and existing problems of photocathodic protection technology

CHEN Fan-wei,
LIU Bin,
JIAN Dong-hui,
LIU Si-qi,
LIU Shu-hui,
XU Da-wei

Affiliations

CHEN Fan-wei: Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
LIU Bin: Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
JIAN Dong-hui: Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
LIU Si-qi: Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
LIU Shu-hui: Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
XU Da-wei: Beijing Key Laboratory of Electrochemical Process and Technology for Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China

DOI: https://doi.org/10.11868/j.issn.1001-4381.2021.000469
Journal volume & issue: Vol. 49, no. 12
pp. 83 – 90

Abstract

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In this paper, the research status of photocathodic protection in broadening light absorption range, enhancing electron-hole separation rate and conduction efficiency of electrons, and realizing protection in the dark were discussed. Six modification methods were summarized, including modification of conductive polymers, construction of heterojunction, composition with two-dimensional conductive materials, adjustment and control of topography, doping with metal or non-metallic elements and coupling with energy storage semiconductors. The problems, such as short duration of protection in the dark and low repeatability of some experiments, were pointed out. The unsolved technical difficulties, such as overcoming insufficient natural light intensity, the harsh conditions of electrolyte solution and the complexity of photocathodic protection system design, were analyzed. Finally, several solutions to above problems were proposed, such as the development of semiconductor materials driven by natural light, the preparation of colloidal electrolyte and capsule material for storing electrolyte, and the design of photocathodic protection coatings.

Published in Cailiao gongcheng

ISSN: 1001-4381 (Print)
Publisher: Journal of Materials Engineering
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: http://jme.biam.ac.cn/CN/1001-4381/home.shtml

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Abstract

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