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Toward the goal of clean and sustainable energy source, the development of a trifunctional electrocatalyst is a boon for energy storage and conversion devices such as regenerative fuel cells and metal-air batteries. MOF-derived semiconducting-metallic core-shell electrocatalyst (NCNT = nitrogen-doped carbon nanotube), which was shown to catalyze oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), is also found to be an active electrocatalyst for hydrogen evolution reaction (HER) with a low overpotential of 171 mV. Here, the HER activity of is presented and is shown as highly efficient and robust trifunctional electrocatalyst. The detailed theoretical calculation has found N-center of Co-N moiety to be the H binding active site and thus proves to be active for HER. Further, the ORR and OER bifunctionality of helped in fabricating secondary Zn-air battery with high power density of 135 mW/cm. Also, an all-solid-state flexible and wearable battery with as cathode and electrodeposited Zn on carbon fiber cloth as anode was shown to withstand its performance even under stressed conditions. Finally, the material being trifunctional in nature was used both as an anode and cathode material for the electrolysis of water, which was powered by the Zn-air batteries with as the cathode material. It is believed that the development of a trifunctional catalyst would help in wide commercialization of regenerative fuel cells.
This article was published in the following journal.
Name: Inorganic chemistry
We report a comparison between a series of zinc and tin porphyrins as photosensitizers for photochemical hydrogen evolution using cobaloxime complexes as molecular catalysts. Among all the chromophore...
A challenge in electrochemical CO2 reduction is inhibiting hydrogen evolution reaction (HER). Herein, bulk Zn electrode was chosen to reveal the effect of specially adsorbed Cl- ions on the hydrogen e...
The development of efficient and low-cost hydrogen evolution reaction electrocatalysts has been regarded as a promising approach to produce sustainable and clean fuels to solve the energy crisis and e...
Electrochemical and photoelectrochemical CO2 reductions were carried out with Re(dh-bipy)(CO)3(OH2) cocatalysts in aqueous electrolytes. Competition between hydrogen evolution and CO2 reduction has be...
Proton exchange membrane fuel cell (PEMFC) system with a hydrogen generator could have high energy density than flexible batteries and supercapacitor, and is possible to meet the urgent demand of flex...
Assessment of the impact of oral Human Milk Oligosaccharides (HMO) application on acute diarrhoea and the development of prolonged and persistent diarrhoea in paediatric patients hospitali...
Use of cutaneous electrochemical conductance for preclinical screening of small-caliber nerve fibers
To determine the effectiveness of combining different concentrations of hydrogen peroxide and carbamide used during tooth bleaching.
This study is a placebo-controlled, double-blind trial that will investigate the safety and tolerability of molecular hydrogen, a promising antioxidant agent, in patients with early-stage ...
This study suggested that hydrogen has a potential as an effective and safe therapeutic agent on cGVHD.
A scanning probe microscopy technique that uses an ultramicroelectrode as the scanning probe that simultaneously records changes in electrochemical potential as it scans thereby creating topographical images with localized electrochemical information.
The interdisciplinary science that studies evolutionary biology, including the origin and evolution of the major elements required for life, their processing in the interstellar medium and in protostellar systems. This field also includes the study of chemical evolution and the subsequent interactions between evolving biota and planetary evolution as well as the field of biology that deals with the study of extraterrestrial life.
A genus of flexible, spiral rods found in hydrogen sulfide-containing mud, sewage, and polluted water. None of the species properly referred to in this genus are pathogenic.
Evolution at the molecular level of DNA sequences and proteins. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
An electrochemical technique for measuring the current that flows in solution as a function of an applied voltage. The observed polarographic wave, resulting from the electrochemical response, depends on the way voltage is applied (linear sweep or differential pulse) and the type of electrode used. Usually a mercury drop electrode is used.