Amorphous Catalysts and Electrochemical Water Splitting: An Untold Story of Harmony

Abstract

until at least we can breach the thermoneutral overpotential (1.481 V) barrier.

Appropriate Use of Electrochemical Impedance Spectroscopy in Water Splitting Electrocatalysis

“…In definition, complete electrolysis of a water molecule should occur with an applied potential of 1.229 V vs. reversible hydrogen electrode (RHE) . However, the kinetic complexities (associated mainly with the anodic OER) and internal energy loss due to increasing entropy (at a near adiabatic condition) altogether increases the cell voltage of electrolysis that results in significant energy loss . To avoid this, several materials have been reported to be catalyzing these half‐cell reactions with relatively lower overpotentials.…”

Phase Engineering of Nanomaterials for Clean Energy and Catalytic Applications

“…Hydrogen evolution reaction (HER) is an essential process in water splitting, which produces clean hydrogen energy for a sustainable future. [61][62][63][64][65] For example, the unconventional fcc Ru shows better HER catalytic performance than the commercial Pt/C catalyst. It was found that the fcc Ru/g-C 3 N 4 /C demonstrated a much higher hydrogen evolution turnover frequency (TOF) compared to the Pt/C catalyst.…”

“…[82] In addition, the amorphous nanomaterials were also found to be highly active toward OER due to their abundant dangling bonds and defects. [83,84] For instance, Huang et al systematically studied catalytic activities Figure 2. a) Schematic illustration of the structure of 4H/fcc Au-Ru nanowires.…”

Highly Enhanced OER Activity of Amorphous Co3O4 via Fabricating Hybrid Amorphous‐Crystalline Gold Nanostructures

“…To improve the surface area and concentration of active sites, fabrication of amorphous metal oxides catalysts have recently gained increased attention . Amorphous metal oxides have shown superior electrocatalytic activity compared to their crystalline counterpart.…”