https://techcrunch.com/2021/10/06/repair-carbon-realised-fuel-cell-tech-could-be-applied-to-co2-capture-now-they-plan-to-scale/

Existing technologies for direct air capture technologies require a lot of heat to remove the CO2, after it’s been absorbed into filters. The process to date has been laborious and often highly energy inefficient. What’s often been missing in the process has been a more efficient way of capturing CO2 in the first place. The key to the whole thing is filters, and it is this aspect that more than one startup has been working on in the last few years.

Isrel-based RepAir Carbon has now came up with an approach drawn from the ideas behind fuel cell technology to do just that, and it’s now closed a $1.5m Seed funding round co-led by Counteract and ESIL, with participation from Consensus Business Group, ImpactAssets and other investors. ESIL is a partnership of EDF Renewables, Johnson Matthey, and Bazan Group.