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As a typical p-type semiconductor metal oxide, CuO is considered to be a high-performance moisture-sensitive material; however, with the development of production, the complex working environment has put forward higher requirements for its humidity sensitivity, especially sensitivity and stability. In this regard, workers around the world are working to improve the moisture-sensing properties of sensing elements. In this review, the humidity-sensing properties of CuO-based moisture-sensitive materials are comprehensively summarized, focusing on effective measures to improve the moisture-sensing properties of CuO-based moisture-sensitive materials, including surface modification and nanocomposites. The future research of semiconducting metal oxide humidity-sensitive materials is also prospected.<\/jats:p>","DOI":"10.1155\/2022\/7749890","type":"journal-article","created":{"date-parts":[[2022,5,25]],"date-time":"2022-05-25T22:05:38Z","timestamp":1653516338000},"page":"1-29","source":"Crossref","is-referenced-by-count":13,"title":["Research Progress on Humidity-Sensing Properties of Cu-Based Humidity Sensors: A Review"],"prefix":"10.1155","volume":"2022","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3102-1985","authenticated-orcid":true,"given":"Jingyu","family":"Wang","sequence":"first","affiliation":[{"name":"College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4136-5351","authenticated-orcid":true,"given":"Wen","family":"Zeng","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, Chongqing University, 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