University of Illinois Urbana-Champaign and Toyota researchers built an electrochemical device that captures CO2 directly from ambient air, then releases it in purified form for storage or reuse.
Instead of heat-driven capture, the system uses electricity to shift a saltwater solution between more alkaline and less alkaline states, absorbing CO2 in one step and expelling it in another.
The team said potassium-stabilized manganese dioxide electrodes and a cation-compensated cell let the process run in an alkaline range where CO2 dissolves more readily, improving direct-air-capture practicality.
Lab results remain early-stage: mixing between the device's two liquid streams still cuts efficiency, and researchers said reducing that loss is key to lowering energy use and raising productivity.
The work, published in Environmental Science and Technology, targets legacy atmospheric CO2 that point-source capture at smokestacks cannot remove and fits Toyota's longer-term decarbonization research.
This new method promises to pull CO2 from the air, but when will it be more effective than simply building new wind and solar farms?
Can Toyota's battery-like carbon capture tech scale up, or is it a costly distraction from proven renewable energy solutions?
University of Illinois and Toyota Unveil Battery-Type Direct Air Capture Device: Transforming Carbon Removal with Electrochemical Innovation
Overview
On July 14, 2026, a groundbreaking device for direct air capture (DAC) of carbon dioxide was announced, marking a pivotal step in the fight against climate change. Developed through a strategic collaboration between the University of Illinois Urbana-Champaign and Toyota, this battery-like device uses an advanced electrochemical process to efficiently remove CO₂ directly from the atmosphere. Its main goal is to tackle the challenge of legacy CO₂ removal, which is crucial for reducing the long-term impacts of climate change. This innovation highlights a shared commitment to sustainable solutions and environmental protection.