Modulating crystal and electronic structure of NiFe-MOFs by inorganic acid for highly efficient electrochemical water oxidation

Abstract

Seeking new methods to modulate the structure of metal-organic frameworks (MOFs) for diverse applications, particularly for water splitting is intensively urgent but challenging. Herein, a simple hydrothermal method employing HCl...

Effect of Ni Sulfate Residue on Oxygen Evolution Reaction (OER) in Porous NiFe@NiFe Layered Double Hydroxide

“…The peaks at 1387 and 1581 cm −1 corresponding to COO − might be attributed to the exposure of areas of the carbon paper owing to peeled NNF-D (Figure S29, Supporting Information). [24] Furthermore, we confirmed the transformation of NiFe LDH into NiFeOOH through Raman spectroscopy. The new peaks at 467 and 551 cm −1 , which were attributed to the e g bending mode of Ni III -O and the A 1g stretching mode of Ni III -O, emerged (in the initial state, the peaks were at 458 and 535 cm −1 ) as illustrated in Figure 3b.…”

“…The peaks at 1387 and 1581 cm −1 corresponding to COO − might be attributed to the exposure of areas of the carbon paper owing to peeled NNF‐D (Figure S29, Supporting Information). [ 24 ]…”

Prussian blue analog‐derived bimetallic phosphide nanoparticles anchored in nitrogen‐doped porous electrospun carbon nanofibers for efficient oxygen evolution reaction

“…[9][10][11][12][13] Some noble metal oxides as electrocatalysts, such as Ir and Ru oxides, can significantly promote the OER kinetics, whereas their high price and lack of availability have seriously restricted their large-scale applications. [14][15][16][17][18][19] Therefore, developing OER electrocatalysts with rich reserve, low price, effective catalytic ability, and excellent durability is promising. [20][21][22] Among various non-noble metals, transition metal phosphides (TMPs), with the merits of abundant reserves, distinctive structure, metal-like electrical properties, and variable composition, have been extensively investigated in electrocatalytic materials.…”

“…Considering that, efficient OER electrocatalysts are desirable to facilitate reaction kinetics and reduce overpotential 9–13 . Some noble metal oxides as electrocatalysts, such as Ir and Ru oxides, can significantly promote the OER kinetics, whereas their high price and lack of availability have seriously restricted their large‐scale applications 14–19 . Therefore, developing OER electrocatalysts with rich reserve, low price, effective catalytic ability, and excellent durability is promising 20–22 …”

A low-content CeOx dually promoted Ni3Fe@CNT electrocatalyst for overall water splitting

“…Among those clean and efficient energy-conversion technologies, [1][2][3][4][5] electrocatalytic water splitting has attracted wide attention owing to its potential for convenient large-scale application and sustainability. 6 Generally, electrocatalytic water splitting occurs in two core half-reactions: the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), both of which have sluggish reaction kinetics and are highly dependent on high-performance but precious electrocatalysts with lower overpotentials and accomplish favorable energy-transfer efficiency for activation. 5,7 Currently, precious RuO 2 /IrO 2 and Pt are the benchmark electrocatalysts for the OER and HER, respectively.…”