Harvesting a large amount of low-grade energy in the atmospheric moisture and developing an off-grid distributed power generation system is one of the effective ways to supplement daily electricity consumption.Moisture generation technology involves utilizing functional materials that interact with moisture to harvest energy from the environment.This technology has garnered considerable attention and research in recent years.This paper presented a retrospective of the development history of moisture generation technology.The interaction principle between moisture and power generation materials was firstly introduced.The prevailing mainstream explanations for the moisture generation mechanism,such as ion diffusion and streaming potential,were comprehensively overviewed and analyzed.The integration of moisture absorption power generation layers was investigated,encompassing an assessment of their merits and demerits.The structure and potential application fields of moisture generators were also summarized.Furthermore,the strategies to enhance the energy conversion efficiency of moisture generators and expand their output power were elaborated.Lastly,the paper addressed the main challenges faced by moisture generation technology and offered recommendations to address prevailing issues.The continuous advancement of moisture generation technology promised to introduce novel possibilities in the realm of green energy and facilitate the sustainable evolution of off-grid decentralized power generation systems.
moist-electric generatorshygro-electricityionic diffusionstreaming potentialclean energy
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