Anion dependency of spinel type cobalt catalysts for efficient overall water splitting in an acid medium

Developing Outstanding Bifunctional Electrocatalysts for Rechargeable Zn‐Air Batteries Using High‐Purity Spinel‐Type ZnCo2Se4 Nanoparticles

“…peaks also showed up at 788.0 and 804.1 eV, indicating Co 3+ and Co 2+ , respectively. [ 38,39 ] Se 3d XPS spectra showed peaks at 54.3 and 55.6 eV (Figure 2c), corresponding to Se 3d 5/2 and Se 3d 3/2 , respectively, resulting from Co‐Se bonds, which shows that the ZnCo 2 Se 4 nanocomposite was successfully formed. [ 35 ]…”

Regulating the electronic structure of single-atom catalysts for electrochemical energy conversion

“…87–89 The SACs are fabricated by loading isolated metal atoms on anchored sites. 90–93 The co-precipitation method is performed by adding precipitating agents to aqueous solutions containing various metal cations and adjusting the pH to obtain uniformly dispersed SACs, and the SACs are approached by lowering the loading of metal atoms to prevent aggregation, e.g. , Ru 1 /FeO x SACs with the low loading of 0.18 wt% was prepared through the co-precipitation method by dissolving ferric nitrate and ruthenium chloride in a NaOH aqueous solution with the pH value of 7.0–8.0.…”

Interface Coupling of Cobalt Hydroxide/Molybdenum Disulfide Heterostructured Nanosheet Arrays for Highly Efficient Hydrazine-Assisted Hydrogen Generation

“…Hydrogen, as green energy with high calorific value, is supposed to be one of the most promising candidates for nonrenewable energy resources. − Electrochemical water splitting is proved to be a convenient and efficient pathway to achieve clean hydrogen. This technology consists of two half-reactions, including the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). − However, the OER process has a slow four-electron transfer process and a high theoretical voltage of 1.23 V, leading to the energy conversion efficiency of overall water splitting being greatly restricted. − Therefore, exploring alternative strategies to replace the OER process by using the other oxidation reaction with faster kinetics is necessary to realize the large-scale hydrogen production of water electrolysis.…”