Battery-based carbon capture cuts energy use to 0.8 MWh per ton of CO2

A team led by James Buchen at the University of Delaware demonstrated an electrochemical carbon-capture device using nickel hydroxide electrodes: a nine-cell lab unit consumes about 0.8 MWh per ton of CO2, versus 1.5–3 MWh for existing setups. Startup RepAir Carbon estimates a pilot cost of $566 per ton and projects $92 per ton at 1,000x scale.

• Energy use is about 0.8 MWh per ton of CO2
• Existing capture plants use 1.5–3 MWh per ton
• Pilot plant cost estimated at $566 per ton of CO2
• Projected cost at 1,000x scale is $92 per ton