Xu et al. (2023): Regeneration of direct air CO2 capture liquid via alternating electrocatalysis
Yi Xu, Shijie Liu, Jonathan P. Edwards, Yurou Celine Xiao, Yong Zhao, Rui Kai Miao, Mengyang Fan, Yuanjun Chen, Jianan Erick Huang, Edward H. Sargent, David Sinton IN: Joule, https://doi.org/10.1016/j.joule.2023.07.011
The regeneration of DAC capture liquids requires high temperatures and thermal energy inputs with emissions that diminish their net environmental benefit. Here, the authors present a low-temperature electrochemical process to regenerate alkaline capture liquids via alternating electrocatalysis (AE). Colocating oxidation and reduction reactions on a single electrode, cycled between electrolyzer and fuel cell modes, mitigates film formation and losses in the regeneration of alkali hydroxide and hydrogen halide.