Atomic heterointerface engineering overcomes the activity limitation of electrocatalysts and promises highly-efficient alkaline water splitting

Abstract

Alkaline water splitting, especially the anion-exchange-membrane based water electrolysis, is an attractive way for low-cost and scalable H2 production. Green electricity-driven alkaline water electrolysis is requested to develop highly-efficient electrocatalysts...

Three-dimensional CoOOH nanoframes confining high-density Mo single atoms for large-current-density oxygen evolution

“…A critical bottleneck in application of water electrolysis and metal-air batteries as promising clean energy conversion and storage technologies, [1][2][3][4] is the sluggish oxygen evolution reaction (OER) on the anode, [5][6][7][8][9][10][11][12] which typically requires high-cost and scarce noble metal-based electrocatalysts such as iridium and ruthenium oxides. 13,14 In the past decade, a wide range of earth-abundant transition-metal compounds including oxide perovskites, 15 metal oxyhydroxides, 16 amorphous metal oxyhydroxides, 17 and molecular complexes, 18 have been developed as candidate OER electrocatalysts.…”

Rational Design of Better Hydrogen Evolution Electrocatalysts for Water Splitting: A Review

“…Interface effect refers to the interface between two types of active materials due to strong bonding, electronic interaction or synergistic effect, which can form more active centers than individual components. [ 250 , 251 , 252 , 253 , 254 , 255 , 256 , 257 , 258 , 259 , 260 , 261 , 262 , 263 , 264 , 265 , 266 , 267 , 268 , 269 ] The complex electronic structures of interfacial electrocatalysts make the fundamental investigations of structure‐activity relationships still remain as a great challenge. Nevertheless, this complexity also introduces various structural features that can be adjusted advantageously.…”

A carbonization/interfacial assembly-driven electroplating approach for water-splitting textile electrodes with remarkably low overpotentials and high operational stability

“…Generally, the overall kinetics of a water-splitting device composed of HER and OER electrodes is strictly limited by the sluggish OER rather than the HER. 6,9,15 Thus, it is critical to prepare OER electrodes with a low overpotential and long-term stability in addition to preparing high-performance HER electrodes. It is well known that the trimetal-based catalyst NiFeCo, among various non-noble metal-based OER catalysts, possesses high OER activity.…”