Photoelectrochemical H evolution on WO/BiVO enabled by single-crystalline TiO overlayer modulations.

Tungsten oxide/bismuth vanadate (WO/BiVO) has emerged as a promising photoanode material for photoelectrochemical (PEC) water splitting owing to its facilitated charge separation state differing significantly from single phase materials. Practical implementation of WO/BiVO is often limited by poor stability arising from the leaching of V from BiVO during PEC operations. Herein, we demonstrate that the synthesis of a tungsten oxide/bismuth vanadate/titanium oxide (WO/BiVO/TiO) heterostructure onto a fluorine-doped tin oxide-coated glass substrate through a combined simple hydrothermal-spin coating strategy will advance PEC performance while slowing water oxidation kinetics and improving photostability.

Interfacial growth of the optimal BiVO nanoparticles onto self-assembled WO nanoplates for efficient photoelectrochemical water splitting.

Photoelectrochemical water splitting is the most efficient green engineering approach to convert the sun light into hydrogen energy. The formation of high surface area core-shell heterojunction with enhanced light-harvesting efficiency, elevated charge separation, and transport are key parameters in achieving the ideal water splitting performance of the photoanode. Herein, we demonstrate a first green engineering interfacial growth of the BiVO nanoparticles onto self-assembled WO nanoplates forming WO/BiVO core-shell heterojunction for efficient PEC water splitting performance.

Insights into the interfacial nanostructuring of NiCoS and their electrochemical activity for ultra-high capacity all-solid-state flexible asymmetric supercapacitors.

Ternary metal sulfide based nanostructured materials are promising for commercialization of the electrochemical energy storage devices. Herein, three different NiCoS nanostructures (nanoflakes, nanosheets, and nanoparticles) were fabricated by electrodeposition. Of these, nanosheets consisting of interconnected nanoparticles formed a highly porous network for supercapacitive energy storage.