Research on the Influence of a Magnesium-Based Carbon Dioxide Battery System on CO 2 Storage Performance.

At present, the energy consumption and carbon emissions of maritime transportation have raised concerns about environmental issues. A potential way to reduce carbon emissions from vessels is the use of chemical-based carbon capture and storage (CCS) technology. However, this technology faces challenges such as high energy consumption, large space occupation, and high processing costs. Therefore, the development of a technology with low energy consumption and compact CO₂ storage is crucial to promote the advancement of CCS technology. This paper introduces a magnesium CO₂ battery system that converts CO₂ into new energy, in the form of hydrogen, while storing CO₂. By preparing highly efficient catalytic electrodes and testing the electrolyte and CO₂ flow rate on the battery performance, the optimal process parameters were determined to be Pd/CeO₂-oct for the electrodes, a 0.5 mol/L NaOH solution for the electrolyte, and a CO₂ flow rate of 1 L/h. The battery system demonstrated high cycling stability and conversion efficiency at a current density of 8 mA·cm⁻², with a stable cycling time of 600 min (20 cycles), a cathode hydrogen production of 10.135 mL, and a Faraday efficiency of 97.03%. [ABSTRACT FROM AUTHOR]