The performance of a hydrogen-powered, electrochemically-driven CO 2 separator (EDCS) was demonstrated at cathode inlet CO 2 concentrations from 400 ppm to 5,000 ppm. The impact of current density and CO 2 concentration were evaluated to predict operating windows for various applications. The single-cell data was used to scale a 100 cm 2 , multi-cell stack using a shorted-membrane design for four applications: direct air capture (DAC), hydroxide exchange membrane fuel cell (HEMFC) air pretreatment, submarine life support, and space habitation. For DAC, a 339-cell EDCS stack (7.7 L, 17 kg) was projected to remove 1 tonne CO 2 per year. The addition of the EDCS in HEMFC systems would result in nearly a 30% increase in volume, and therefore further improvements in performance would be necessary. A module containing five 338-cell EDCS stacks (38 L, 85 kg) in parallel can support a 150 person crew at 2.1% of the volume of the liquid amine system employed in submarines. For space habitation, a 109-cell EDCS stack (3.2 L, 10 kg) is adequate for 6 crewmembers, and is less than 1% the size and 5% the weight of the current CO 2 removal system installed on the International Space Station.
Matz, Stephanie, et al. "Hydrogen-powered Electrochemically-driven CO <sub>2</sub> Removal from Air Containing 400 to 5000 ppm CO <sub>2</sub>." Journal of the Electrochemical Society, vol. 169, no. 7, Jul. 2022. https://doi.org/10.1149/1945-7111/ac7adf
Matz, Stephanie, Shi, Lin, Zhao, Yun, Gottesfeld, Shimshon, Setzler, Brian P., & Yan, Yushan (2022). Hydrogen-powered Electrochemically-driven CO <sub>2</sub> Removal from Air Containing 400 to 5000 ppm CO <sub>2</sub>. Journal of the Electrochemical Society, 169(7). https://doi.org/10.1149/1945-7111/ac7adf
Matz, Stephanie, Shi, Lin, Zhao, Yun, et al., "Hydrogen-powered Electrochemically-driven CO <sub>2</sub> Removal from Air Containing 400 to 5000 ppm CO <sub>2</sub>," Journal of the Electrochemical Society 169, no. 7 (2022), https://doi.org/10.1149/1945-7111/ac7adf
@article{osti_1875206,
author = {Matz, Stephanie and Shi, Lin and Zhao, Yun and Gottesfeld, Shimshon and Setzler, Brian P. and Yan, Yushan},
title = {Hydrogen-powered Electrochemically-driven CO <sub>2</sub> Removal from Air Containing 400 to 5000 ppm CO <sub>2</sub>},
annote = { The performance of a hydrogen-powered, electrochemically-driven CO 2 separator (EDCS) was demonstrated at cathode inlet CO 2 concentrations from 400 ppm to 5,000 ppm. The impact of current density and CO 2 concentration were evaluated to predict operating windows for various applications. The single-cell data was used to scale a 100 cm 2 , multi-cell stack using a shorted-membrane design for four applications: direct air capture (DAC), hydroxide exchange membrane fuel cell (HEMFC) air pretreatment, submarine life support, and space habitation. For DAC, a 339-cell EDCS stack (7.7 L, 17 kg) was projected to remove 1 tonne CO 2 per year. The addition of the EDCS in HEMFC systems would result in nearly a 30% increase in volume, and therefore further improvements in performance would be necessary. A module containing five 338-cell EDCS stacks (38 L, 85 kg) in parallel can support a 150 person crew at 2.1% of the volume of the liquid amine system employed in submarines. For space habitation, a 109-cell EDCS stack (3.2 L, 10 kg) is adequate for 6 crewmembers, and is less than 1% the size and 5% the weight of the current CO 2 removal system installed on the International Space Station. },
doi = {10.1149/1945-7111/ac7adf},
url = {https://www.osti.gov/biblio/1875206},
journal = {Journal of the Electrochemical Society},
issn = {ISSN 0013-4651},
number = {7},
volume = {169},
place = {United States},
publisher = {The Electrochemical Society},
year = {2022},
month = {07}}
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 370, Issue 1974https://doi.org/10.1098/rsta.2012.0137