Photoelectrochemical Charge Excitation Enhancement by Triboelectric Nanogenerator for High-Efficiency Self-Powered AnticorrosionOA
Harnessing the synergy of solar and mechanical energy presents a potential strategy for high-efficiency photoelectrochemical cathodic protection.Herein,a Chitosan/NiFe₂O₄/TiO₂(CS/NiFe₂O₄/TiO₂)ternary heterojunction with dual S-scheme charge-transfer channels is rationally designed,which strategically preserves high-energy electrons and holes while quenching low-activity carriers through interfacial band alignment.To enhance energy capture from mechanical sources,we developed Ecoflex composite dielectric properties to build a triboelectric nanogenerator(TENG).The integrated self-powered cathodic protection system dynamically couples triboelectricity and photoelectrochemistry,where TENG-generated electric fields accelerate carrier separation in the heterojunction,resulting in a cathodic polarization shift of-0.517 V vs SCE for 304 stainless steel(304ss)protection.This represents a 148%enhancement in cathodic polarization shift(ΔE=-0.517 to(-0.209)=0.308 V)compared to solar-only operation(-0.209 V vs SCE),demonstrating the superior protective efficacy enabled by the integrated energy harvesting strategy.This work establishes a sustainable paradigm for self-powered anticorrosion technologies in the marine environment.
Youbo Nan;Xiutong Wang;Xiaofan Zhai;Weijie Fan;Yanan Sun;Hui Zhou;Yanliang Huang
State Laboratory of Advanced Marine Materials,Shandong Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China University of Chinese Academy of Sciences,Beijing 100049,ChinaState Laboratory of Advanced Marine Materials,Shandong Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,ChinaState Laboratory of Advanced Marine Materials,Shandong Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,ChinaQingdao Branch of Naval Aeronautical University,Qingdao 266071,ChinaState Laboratory of Advanced Marine Materials,Shandong Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,ChinaState Laboratory of Advanced Marine Materials,Shandong Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,ChinaState Laboratory of Advanced Marine Materials,Shandong Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China
信息技术与安全科学
photoelectrochemicalself-powered anticorrosionS-scheme heterojunctionTiO₂triboelectric nanogenerator
《Energy & Environmental Materials》 2026 (3)
P.525-535,11
supported by the National Natural Science Foundation of China(No.42476207)the Innovation Platform for Academicians of Hainan Province,and the Key R&D Program of Shandong Province,China(No.2022CXPT027).
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