Arrayed Cobalt Phosphide Electrocatalyst Achieves Low Energy Consumption and Persistent H2 Liberation from Anodic Chemical Conversion

Abstract

HIGHLIGHTS • A template approach for the synthesis of porous cobalt phosphide nanoarrays (Co 2 P/CoP NAs) is reported, which exhibits superior electrocatalytic activity and stability toward charge storage and hydrogen evolution. • Using Co 2 P/CoP NAs as a charge mediator, the H 2 and O 2 evolution of alkaline water electrolysis is separated effectively in time, thereby achieving a membrane-free pathway for H 2 purification.

A Review of the Application of Heterostructure Catalysts in Hydrogen Evolution Reaction

“…Desmond E. Schipper et al established FeÀ P system materials such as Fe 4 P, Fe 3 P, Fe 2 P, FeP, FeP 2 and FeP 4 by chemical vapor deposition (CVD), as shown in Figure 11. [91] Their differences in composition and structure lead to different electronic and physicochemical properties. At first, Fe 3 P and FeMnP thin films formed on quartz were obtained by using H 2 Fe 3 (CO) 9 PtBu and FeMn (CO) 8 (μ-PH 2 ) as precursors; then, all the materials were placed in fluorine-containing tin oxide (FTO) to analyze their electrochemical hydrogen evolution ability for water hydrolysis in 0.5 M H 2 SO 4 .…”

“…Desmond E. Schipper et al . established Fe−P system materials such as Fe 4 P, Fe 3 P, Fe 2 P, FeP, FeP 2 and FeP 4 by chemical vapor deposition (CVD), as shown in Figure 11 [91] . Their differences in composition and structure lead to different electronic and physicochemical properties.…”

Recent Developments on Cr‐Based Electrocatalysts for the Oxygen Evolution Reaction in Alkaline Media

“…Although the adoption of this class of materials has found interest for OER, [94,95] literature on the utilisation of Cr‐based electrocatalysts is scanty. Among the transition metal phosphides, Co containing phosphides have been attracting a fair amount of attention as bifunctional electrocatalysts [96–101] . Wu and co‐workers studied the effect of doping Co 2 P with Cr on carbon black (Cr x Co 2‐x P‐CB) and the resultant activity towards catalysing both the HER and OER [53] .…”

Manipulating the Electrocatalytic Performance of NiCoP Nanowires by V Doping Under Acidic and Basic Conditions for Hydrogen and Oxygen Evolution Reactions

“…The growing depletion of conventional fossil fuels has resulted in significant environmental and water contamination in recent decades. As a result, the search for renewable and sustainable energy has attracted interest. − Because of its low emissions and great energy density, hydrogen is considered a viable option. , Electrolyzed water is an ideal method for preparing high-quality H 2 without emitting carbon. , Commercial HER and OER electrocatalysts are typically noble metal-based catalysts. − However, because of their rarity and high cost, they cannot be employed on a large scale. As a result, designing bifunctional catalysts with high efficiency, low cost, and extended life is urgently needed.…”