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5 nm SnFe2O4 nanoparticle, an un-explored inverse spinel ferrite material, has been explored as electrode material for overall water splitting study where Fe sites are OER active and Sn sites promote electron conduction and HER active.

Development of economical and high-performance electrocatalysts for the oxygen evolution reaction (OER) is of tremendous interest for future applications as sustainable energy materials. Here, a unique member of efficient OER electrocatalysts has been developed based upon structurally versatile dumbbell-shaped ternary transition-metal (Cu, Ni, Co) phosphates with a three-dimensional (3D) (Cu

A small alteration in reaction strategy leads to isolation of different phase and crystallinity of the iron-oxyhydroxides during the oxygen evolution reaction in alkaline medium. Polycrystalline Lepidocrocite possessing multiple surface terminals is the most active catalyst.

In the present era, electrochemical water splitting has been showcased as a reliable solution for alternative and sustainable energy development. The development of a cheap, albeit active, catalyst to split water at a substantial overpotential with long durability is a perdurable challenge. Moreover, understanding the nature of surface-active species under electrochemical conditions remains fundamentally important. A facile hydrothermal approach is herein adapted to prepare covellite (hexagonal) phase CuS nanoplates. In the covellite CuS lattice, copper is present in a mixed-valent state, supported by two different binding energy values (932.10 eV for Cu

Advancement of double spinel-type blended metal oxides and designing heterostructured nanomaterials with assorted shapes using two different metals remains an active area of research. In this work, we designed marigold flower-shaped Ni3V2O8 structures by simple and facile thermal decay of Ni(II) 8-hydroxyquinoline and VO(II) 8-hydroxyquinoline molecular precursors using a universal and green solvent, water. The marigold flower-shaped structure of Ni3V2O8 was characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). Finally, we tested these marigold flower-shaped Ni3V2O8 structures for their electrochemical performance, such as the oxygen evolution reaction (OER). The results demonstrated that the marigold flower-shaped Ni3V2O8 structure has superior catalytic activity (overpotential of 328 mV at 10 mA cm−2 and a Tafel slope of 61 mV dec−1) compared with a physical mixture of V2O5 and NiO (overpotential of 496 mV at 10 mA cm−2 and a Tafel slope of 158 mV dec−1), pure NiO (overpotential of 553 mV at 10 mA cm−2 and a Tafel slope of 205 mV dec−1) or V2O5 (overpotential of 668 mV at 10 mA cm−2 and a Tafel slope of 314 mV dec−1) in alkaline medium. This higher OER activity of the marigold flower-shaped Ni3V2O8 structure strengthens its adoption as a potential candidate in the field of energy storage and conversion systems.