In this paper, three different morphological Co3O4 electrodes for oxygen evolution reaction (OER) have been synthesized. By comparing the three morphologies of Co3O4, the electrocatalytic properties show that the urchin-like spheres of Co3O4 electrode has relative low overpotential and good electrocatalysis stability, indicating that the structure of urchin-like Co3O4 spheres exhibit an easy OE...

Ultrathin α-Co(OH)2 nanosheets, prepared via simple hydrolysis at room temperature, were directly grown on Ag nanowires. The catalyst exhibited improved activity for the oxygen evolution reaction, with a reduced onset overpotential (220 mV) and superior durability because of the enhanced electron conductivity and stability of Ag nanowires in alkaline media.

The electrocatalytic oxygen reduction reaction (2e− ORR) via a two-electron process is promising pathway for the production of hydrogen peroxide (H2O2). Here, we systematically investigated 2e− ORR on graphdiyne (GDY) supported single transition metal atoms (TM1@GDY) using density functional theory (DFT) calculations. Among 23 TM1@GDY catalysts, Pt1@GDY showed best performance H2O2 product with...

In photoelectrochemical cells, sunlight may be converted into chemical energy by splitting water into hydrogen and oxygen molecules. Hematite (α-Fe(2)O(3)) is a promising photoanode material for the water oxidation component of this process. Numerous research groups have attempted to improve hematite's photocatalytic efficiency despite a lack of foundational knowledge regarding its surface reac...

Electrochemical reactions can exhibit considerable asymmetry, with the polarization behavior of oxidation at a given metal|electrolyte interface differing substantially from that of reduction. The reference-less, microcontact electrode geometry, in which the electrode overpotentials are geometrically constrained to the working electrode (by limiting its area) is experimentally convenient, parti...

The electrochemical nitrate reduction reaction (NO3RR) has the potential for distributed water treatment and renewable chemical synthesis. Cu is an active monometallic electrocatalyst NO3RR in acidic alkaline electrolytes, where activity limited by of adsorbed to nitrite. Oxygen-vacancy forming metal-oxide supports provide sites N-O bond activation thermal reduction, impacting product distribut...