Correlating the crystal structure and facet of indium oxides with their activities for CO electroreduction.

Constructing structure-function relationships is critical for the rational design and development of efficient catalysts for CO electroreduction reaction (CORR). InO is well-known for its specific ability to produce formic acid. However, how the crystal phase and surface affect the CORR activity is still unclear, making it difficult to further improve the intrinsic activity and screen for the most active structure.

Toward Theoretical Capacity and Superhigh Power Density for Potassium-Selenium Batteries via Facilitating Reversible Potassiation Kinetics.

Potassium-selenium (K-Se) batteries attract tremendous attention because of the two-electron transfer of the selenium cathode. Nonetheless, practical K-Se cells normally display selenium underutilization and unsatisfactory rate capability. Herein, we employ a synergistic spatial confinement and architecture engineering strategy to establish selenium cathodes for probing the effect of K diffusion kinetics on K-Se battery performance and improving the charge transfer efficiency at ultrahigh rates.

Inversely Tuning the CO Electroreduction and Hydrogen Evolution Activity on Metal Oxide via Heteroatom Doping.

Tuning the electronic states near the Fermi level can effectively facilitate the reaction kinetics. However, elucidating the role of a specific electronic state of metal oxide in simultaneously regulating the CO electroreduction reaction (CO RR) and competing hydrogen evolution reaction (HER) is still rare, making it difficult to accurately predict the practical CO RR performance. Herein, replacing the Zn site by heteroatoms with different outer electrons (Mo and Cu) is found to tune both occupied and unoccupied orbitals near the Fermi level of ZnO.