Scalable and energy-efficient synthesis of Co_xP for overall water splitting in alkaline media by high energy ball milling

Abstract

Earth-abundant catalysts based on transition metal phosphides (TMPs) such as CoxP have recently gained a lot of attention in the field of electrocatalysis and are usually acquired by chemical synthesis.

Interfacial Electronic Modulation on Nickel Cobaltite/Black Phosphorus Heterostructures for Boosting the Electrocatalytic Oxygen Evolution Reaction

“…45,49 The interface interaction between NCO and BP promotes the transfer of electrons from BP to NCO and balances the adsorption of oxygen-containing intermediates. Besides, the MA of NCO/BP is much higher than that of previously reported BP-based OER electrocatalysts including the BPIr_be, 50 EBP/CoFeB, 21 CoP/BP, 16 RP-BP/ CNTs, 51 CoFeO@BP, 22 Co x P, 32 Ni 3 N|Ni 2 P|BP, 52 BP-QD/ CoO x , 53 Co 3 O 4 @BP, 54 BP QDs/MXene, 55 Co/BP NSs, 56 CoO-BP-RGO, 38 BP/Ni(OH) 2 , 20 and BP@MOF, 19 Co−Fe/ BP, 18 etc (Figure 4h). OER Mechanism of the NCO/BP Catalyst.…”

“…From Figure 2e,f, the flower-like structure of NCO and the stacked layered structure of BP are disappeared and replaced by irregular particles with a size of several micrometers. 32,34 This is mainly due to the NCO and BP undergoing severe plastic deformation and being crushed under the shearing force generated via ball-milling. The generated NCO nanoparticles and BP nanoflakes reassemble into NCO/BP heterostructured particles based on the high chemical reactivity and interaction of NCO and BP (Figure 2g).…”

Black phosphorus-based nanohybrids for energy storage, catalysis, sensors, electronic/photonic devices, and tribological applications

“…170 The formed Co 2 P would prefer to occupy the defects on the edges and increase the number of electrocatalytic sites for OER. 171 According to the further characterizations and electrochemical tests, the Co/P and Co 3+ /Co 2+ ratios play a key role in surface topography and electrocatalytic performance. The electron-withdrawing nature of BP/CoP was strengthened with the increase of Co 3+ /Co 2+ ratio, which would speed up OER (4OH − → O 2 + 2H 2 O + e − ).…”

Enhanced OER Performance by Cu Substituted Spinel Cobalt Oxide

“…[7,8,11] Therefore, many low-budget electrocatalysts based on earth-rich elements, for instance metallic oxides/hydroxides, transition metal bisuliphides, metal carbides and nitrides of transition (TMNs and MXenes), impurity atoms doped carbon, layered double hydroxides (LDHs), Metallic organic framework (MOFs), single element catalysts, have been exploited to substitute for precious metal electrocatalysts for water decomposition. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] In the past decades, Ternary transition metal oxides such as spinel containing different metal cations promise electrochemical active materials, which might be employed in lithium-ion batteries, supercapacitors and electrocatalysts. [12] Due to its richer redox reaction and lower electron transfer activation energy than single metal oxides, spinel demonstrates greater electrochemical performance.…”