Wang et al. (2025): Mapping innovations in direct air capture: A systematic patent review and literature comparison
Junyao Wang, Runkai Chen, Chao Huang, Zhaoyu Guo, Jian Song, Song He, Yawen Zheng, Shuai Deng, Ying Chen, Yongzhen Wang, Xiangkun Elvis Cao and Shuangjun Li, IN: Renewable and Sustainable Energy Reviews, https://doi.org/10.1016/j.rser.2025.116491
Direct air capture (DAC) technologies are gaining increasing attention in both academic and industrial sectors as an essential negative emission technology (NET) in meeting climate change targets. To advance DAC research, this study presents a comprehensive review of DAC technologies from a patent perspective, aiming to understand its current status, future technological trends, and market opportunities. Through two rounds of rigorous screening, 367 patents were finalized and categorized into four sub-technological groups for further analysis: liquid absorption-based DAC, solid adsorption-based DAC, emerging DAC technologies, and DAC integration and application.