CoFe2O4 nanoparticles were uniformly anchored on reduced graphene oxide by a facile solvothermal method. The obtained CoFe2O4/reduced graphene oxide (CoFe2O4/rGO) hybrid was employed as catalyst for Li-O2 batteries. It could effectively lower the ORR (oxygen reduction reaction) and OER (oxygen evolution reaction) overpotentials of the batteries and deliver a large capacity of 12 235 mA h grGO(-...

The ability of bicarbonate ion (HCO(3) (-)) to stimulate photosynthetic oxygen evolution in maize chloroplast fragments exposed to continuous light depends on light intensity. Stimulation by HCO(3) (-) is less at low intensities. In HCO(3) (-)-depleted chloroplasts exposed to brief saturating light flashes, period 4 oscillations (in O(2) yield per flash) are damped within three cycles. Readditi...

development of efficient electrocatalysts for oxygen reduction reaction (orr) is one of the most important issues for optimizing the performance of fuel cells and metal-air batteries. the introduction of nitrogen into carbon nanostructures has created new pathways for the development of non-precious electrocatalysts in fuel cells. in this work, nitrogen-doped graphene (ng) was synthesized by a ...

Non-rutile polymorphs of binary iridium oxide such as columbite IrO2 (α-IrO2) are promising candidates for highly active acid-stable oxygen evolution reaction (OER) catalysts, yet their synthesis h...

Mn and Co containing nanocubes were produced by hydrothermal synthesis. The materials consist of metal spinels carbonates, where ensure high activity carbonates contribute to stability in the oxygen evolution reaction.

The Cover Feature illustrates the silicate etching from cobalt towards efficient oxygen evolution reaction. More information can be found in Article by D. Sarkar et al.

Transition-metal-based layered double hydroxides (LDHs) have attracted substantial attention as highly efficient oxygen evolution reaction (OER) catalysts because they are earth-abundant, low-cost, and environmentally friendly materials with favorable adsorption/desorption energies for intermittent reactants. However, the application of these LDHs high-performance electrocatalysts is often hind...

Electrocatalytic water splitting is deliberated as an assuring track to use renewable energy for the production of hydrogen; yet, its industrial application limited by anodic oxygen evolution reaction (OER). Perovskite oxide-based materials have been comprehensively explored catalysts OER in alkaline media, with (electro)chemically persuaded alteration their initially crystalline surface into a...