Cationic metal-organic framework with charge separation effect as a high output triboelectric nanogenerator material for self-powered anticorrosion

• Published in: Dalton transactions : an international journal of inorganic chemistry Vol. 52; no. 37; pp. 13316 - 13323
• Main Authors: Shao, Zhichao, Cheng, Haoran, Wei, Yi, Chen, Junshuai, Gao, Kexin, Fang, Zhe, Yan, Yangshuang, Mi, Liwei, Hou, Hongwei
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 26.09.2023
• Subjects: Cathodic protection; Charge materials; Copper; Corrosion effects; Corrosion prevention; Metal-organic frameworks; Nanogenerators; Separation; Short circuit currents; System effectiveness
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d3dt02185h

New stable frictional materials based on metal-organic frameworks (MOFs) are greatly desired for applications in self-powered systems. This work reports an ionic MOF material with efficient charge separation mediated by charge induction. ZUT-iMOF-1(Cu) is chemically stable and its triboelectric output performance surpasses those of traditional MOF materials. The short-circuit current of the iMOF triboelectric nanogenerator is 73.79 μA at 5 Hz. The output performance remains stable over 50 000 cycles of continuous operation. The charge and power densities peak at 123.20 μC m −2 and 3133.23 mW m −2 . Owing to its high output performance, ZUT-iMOF-1(Cu) effectively prevents metal corrosion in cathodic-protection systems. Theoretical calculations show that increasing the charge-separation effect promotes the frictional electricity generation behaviour. This study provides research suggestions for ionic MOF frictional materials and will promote their application in self-powered electrochemical cathodic-protection systems. A cationic metal-organic framework with good chemical stability and excellent triboelectric output performance was prepared. The good output performance makes ZUT-iMOF-1(Cu) effective in preventing metal corrosion in cathodic protection systems.