Volume 45: Energy Transitions toward Carbon Neutrality: Part VIII

The Development of Advanced Electrode Materials for Environmentally Sustainable Mg-O2/CO2 Fuel Batteries Po-Yuan Chang, Pin Ko, Po-Jen Tseng, Jia-Yaw Chang

Abstract

The term “carbon capture and storage” (CCS) pertains to the technological process of capturing and subsequently storing carbon dioxide (CO2). Our research team is currently engaged in the development of a “metal-air fuel cell” with the objective of effectively capturing CO2 from the atmosphere, regardless of its concentration. In this study, we present the utilization of liquidambar Formosana fruit (LFF) as a potential gas diffusion electrode (GDE) for battery applications. Our findings reveal that this natural GDE exhibits a much higher battery discharge specific capacity density of 1441.4 wh/kg compared to conventional electrodes. Furthermore, the evaluated battery life using the LFF-based GDE is seen to be 7.77 times longer than that of alkaline AA batteries. In addition, the utilization of the advanced adsorption material known as active charcoal resorcinol-formaldehyde (ACRF) has demonstrated a notable enhancement in the adsorption capability of CO2, reaching a value of 4.52 mmol/g at standard conditions of 1.00 bar and 298.15 K. This innovative technology is designed to effectively purify the air by simultaneously absorbing oxygen and CO2, while converting them into direct current (DC) power and valuable chemical compounds. Not only is it capable of capturing CO2, but it also possesses the ability to store and subsequently utilize it. The development of a cost-effective and highly efficient optimal CCS technology solution is a promising pathway towards achieving economic, environmental, and sustainability objectives.

Keywords Renewable Energy Resources, Carbon Capture, Carbon Storage, Negative Emissions System, Fuel Cells, Bioenergy Utilization