Carbon-neutral approach
A lower overvoltage results in a greater proportion of chargeable energy being effectively utilized during discharge. The maximum power density achieved was 15.76 mW/cm², closely approaching the 16.15 mW/cm² of the platinum catalyst, which is a key indicator of discharge speed.
“We have proposed a carbon-neutral approach that not only replaces expensive precious metal catalysts but also maximizes the value of biomass and industrial waste. This innovative catalyst could be applied in various energy storage systems, including metal-air batteries,” Lee explained.
As explained in the abstract release by Lee’s team, the findings further show the potential of lignin and urea as effective electrocatalysts, advancing seawater battery performance and supporting the development of sustainable energy storage solutions.