Materials for sustainable energy
Materials for Sustainable Energy is one of our research themes that focuses on fundamental studies of the light-metal oxide electrides and microporous materials for energy applications; and finding ways to harness wastes from the energy industry for beneficial reuse.
Understanding Oxygen Nonstoichiometry in Mayenite: From Electride to Oxygen Radical Clathrate
Mayenite (Ca12Al14O32+δ) is a unique material that forms an electride stable at room conditions when reduced and shows oxygen storage capability when oxidized. The distinct redox behavior and properties of mayenite are known to originate from its clathrate structure that can host a range of oxygen species as well as anionic electrons. However, the oxygen nonstoichiometry in mayenite remains poorly understood. In this work, we establish, based on ab initio simulations, a systematic understanding of the oxygen nonstoichiometry in mayenite in relation to redox conditions and the speciation of the clathrated oxygen ions. It is found that the nonstoichiometric mayenite can be divided into three regions….
Read more
Ongoing projects
Development of low-cost light metal oxide-based energy materials
Nanoporous materials for catalytic applications
Beneficial reuse of coal combustion wastes
