New tech boosts development of carbon-capturing batteries

Researchers from the University of Surrey have created a new system that could speed up the development of catalysts for lithium-CO₂ (Li-CO₂) batteries. The technology was developed to address the slow and inefficient methods currently used to produce catalysts for Li-CO₂ batteries.

In the study, researchers used their tool to test and screen materials like platinum, gold, silver, copper, iron and nickel to investigate whether they would be suitable for developing high-performing Li-CO₂ batteries. Dr Kai Yang, project co-leader, said the researchers created a cutting-edge lab-on-a-chip electrochemical testing platform that can help evaluate electrocatalysts, optimise operation conditions and study CO₂ conversion in high-performance lithium-CO₂ batteries. “This new method is more cost-effective, efficient and controllable than traditional ways of making these materials,” Yang said.

Li-CO₂ batteries are a promising type of battery that work by combining lithium and carbon dioxide; they can store energy effectively while offering a way to capture CO₂, potentially making a dual-contribution to the fight against climate change. Dr Yunlong Zhao, the lead corresponding author of this study, said the new tool will enable quick screening of catalysts, studying reaction mechanisms and practical applications, from nanoscience to cutting-edge carbon removal technologies.

“It is crucial that we develop new negative emissions technologies. Our lab-on-a-chip platform will play a crucial role in advancing this goal. It will not only enhance our understanding of novel batteries, but it can also be applied to other systems like metal-air batteries, fuel cells and photoelectrochemical cells,” Zhao said.

The study was published by Energy and Environmental Science.

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