Tuning the electronic structure of Co@N–C hybrids via metal-doping for efficient electrocatalytic hydrogen evolution reaction

Abstract

Hydrogen evolution reaction (HER) electrocatalysts that are free of noble metals are highly desirable for energy conversion applications. Herein, a general hydrothermal-impregnation-pyrolysis process is proposed to introduce W into Co...

Microwave-assisted synthesis of ZIF-9@xGO composites as cooperative electrocatalysts for electro-oxidation of benzyl alcohols coupled with H2 production

“…A sharp peak at 1607 cm −1 was attributed to –CN stretching mode, while all the sharp bands between 400 and 750 cm −1 were due to the Co–N bond stretching frequency. 17 Additionally, the FTIR spectrum of ZIF-9@10GO showed enhancement of the –C–H stretching impression at 2850 and 2930 cm −1 , which was due to the addition of GO. The high-resolution transmission electron microscopy (HR-TEM) image of the ZIF-9 nanocrystal (Fig.…”

Honeycomb-like hollow carbon loaded with ruthenium nanoparticles as high-performance HER electrocatalysts

“…34 Wang et al obtained a high-performance HER catalyst Co1.5W0.5-py-500@NF through heat treatment of CoW-MOF@NF, with an overpotential of only 55 mV at 25 mA cm −2 . 35 Herein, we use the easily available ZIF8 (2-methylimidazole zinc salt) as the base material and can obtain the honeycomb shape by controlling the etching conditions, which can further increase the probability of the active site contacting the electrolyte. Aer pyrolysis, we can obtain a nitrogen-doped carbon material with rich open pores.…”

“…34 Wang et al obtained a high-performance HER catalyst Co1.5W0.5-py-500@NF through heat treatment of CoW-MOF@NF, with an overpotential of only 55 mV at 25 mA cm −2 . 35…”

Reactive template‐derived interfacial engineering of CoP/CoO heterostructured porous nanotubes towards superior electrocatalytic hydrogen evolution

“…Recently, unremitting efforts have been continuously devoted toward exploring a variety of Earth‐abundant HER electrocatalysts, including nonprecious transition metals (Fe, 14 Co, 15 Ni, 16 Mo, 17 etc.) and their derivatives (i.e., nanoalloys, 18 chalcogenides, 19 phosphides, 20 carbides, 21 etc.).…”