Rational construction of loosely packed nickel nanoparticulates with residual HCOO ligands derived from a Ni-MOF for high-efficiency electrocatalytic overall water splitting

Abstract

Introducing organic ligands into metals or metal oxides is an important approach to fabricate highly efficient, scalable and inexpensive electrocatalysts for widespread energy-related applications. Taking advantage of the uniqueness of...

Current progress in metal–organic frameworks and their derivatives for electrocatalytic water splitting

“…For Ni-based TMOs, Wang et al used Ni-MOF@NF as the precursor, calcining under a mild H 2 atmosphere at 250 °C to synthesize the loose-filled nanoparticles Ni-250-2@NF structure with residual HCOO ligands. 85 The presence of unique organic ligands not only facilitates electron transfer, but also optimizes the hydrophilicity and oxygen phobicity of the catalyst. As a bifunctional catalyst for overall water splitting reaction, Ni-250-2@NF produces a cell voltage of 1.58 V at 10 mA cm −2 .…”

Enabling high loading of well-dispersed Ni2CoP2 catalysts on a 3D-printed electrode for efficient electrocatalysis

“…1a and c). Therefore, most traditional bulk electrocatalytic electrodes can only support well-dispersed non-noble catalysts below 2 mg cm −2 , 32–36 which is much lower than the non-noble catalyst loading requirement of more than 10 mg cm −2 in commercialization. 37 Until now, there has been a great challenge in developing a unique electrode with high loading of well-dispersed non-noble catalysts for efficient electrocatalysis at low potentials.…”

Phosphorus‐Modified Amorphous High‐Entropy CoFeNiCrMn Compound as High‐Performance Electrocatalyst for Hydrazine‐Assisted Water Electrolysis

“…[1][2][3][4][5] However, due to the high DOI: 10.1002/smll.202302130 thermodynamic potential and sluggish kinetics of the anodic oxygen evolution reaction (OER), the large-scale production of hydrogen fuel by electrocatalytic water splitting is still a serious obstacle. [6][7][8][9][10] In this context, replacing the OER halfreaction with other more efficient oxidation processes may be a promising approach to improving the overall energy efficiency of water splitting. The HzOR (hydrazine + 4OH − →N 2 + 4H 2 O + 4e − ) has attracted widely attentions because its low theoretical potential of −0.33 V compared to the OER (1.23 V).…”