Ultrathin NiFeZn-MOF nanosheets containing few metal oxide nanoparticles grown on nickel foam for efficient oxygen evolution reaction of electrocatalytic water splitting

2019 ◽  
Vol 318 ◽  
pp. 957-965 ◽  
Author(s):  
Xuedong Wei ◽  
Na Li ◽  
Nan Liu
Keyword(s):  
Metal Oxide ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles

scholarly journals Cobalt–metalloid alloys for electrochemical oxidation of 5-hydroxymethylfurfural as an alternative anode reaction in lieu of oxygen evolution during water splitting

2018 ◽  
Vol 14 ◽  
pp. 1436-1445 ◽  
Author(s):  
Jonas Weidner ◽  
Stefan Barwe ◽  
Kirill Sliozberg ◽  
Stefan Piontek ◽  
Justus Masa ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Large Scale ◽  
Nickel Foam ◽  
Waste Product ◽  
Suitable Alternative ◽  
Faradaic Efficiency ◽  
Valuable Product

The electrochemical water splitting commonly involves the cathodic hydrogen and anodic oxygen evolution reactions (OER). The oxygen evolution reaction is more energetically demanding and kinetically sluggish and represents the bottleneck for a commercial competitiveness of electrochemical hydrogen production from water. Moreover, oxygen is essentially a waste product of low commercial value since the primary interest is to convert electrical energy into hydrogen as a storable energy carrier. We report on the anodic oxidation of 5-hydroxymethylfurfural (HMF) to afford the more valuable product 2,5-furandicarboxylic acid (FDCA) as a suitable alternative to the oxygen evolution reaction. Notably, HMF oxidation is thermodynamically more favorable than water oxidation and hence leads to an overall improved energy efficiency for H2 production. In addition, contrary to the “waste product O2”, FDCA can be further utilized, e.g., for production of polyethylene 2,5-furandicarboxylate (PEF), a sustainable polymer analog to polyethylene terephthalate (PET) and thus represents a valuable product for the chemical industry with potential large scale use. Various cobalt–metalloid alloys (CoX; X = B, Si, P, Te, As) were investigated as potential catalysts for HMF oxidation. In this series, CoB required 180 mV less overpotential to reach a current density of 55 mA cm−2 relative to OER with the same electrode. Electrolysis of HMF using a CoB modified nickel foam electrode at 1.45 V vs RHE achieved close to 100% selective conversion of HMF to FDCA at 100% faradaic efficiency.

A unique space confined strategy to construct defective metal oxides within porous nanofibers for electrocatalysis

2020 ◽  
Vol 13 (12) ◽  
pp. 5097-5103
Author(s):  
Qi Hu ◽  
Ziyu Wang ◽  
Xiaowan Huang ◽  
Yongjie Qin ◽  
Hengpan Yang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Water Splitting ◽  
Organic Compounds ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Overall Water Splitting ◽  
Metal Organic ◽  
Facile Route

A facile route is developed for the synthesis of defective metal oxide nanoparticles within porous nanofibers by capitalizing on the distinct pyrolysis behaviors of metal–organic compounds and polymers for efficient overall water splitting.

One-step synthesis of nickel phosphide nanowire array supported on nickel foam with enhanced electrocatalytic water splitting performance

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107859-107864 ◽  
Author(s):  
Jian Xiao ◽  
Qiying Lv ◽  
Yan Zhang ◽  
Zheye Zhang ◽  
Shuai Wang
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Nickel Foam ◽  
Nanowire Array ◽  
Bifunctional Catalyst ◽  
Nickel Phosphide ◽  
One Step

One-step synthesis of a nickel phosphide nanowire array on nickel foam, which can be used as a bifunctional catalyst for water splitting and shows an excellent electrocatalytic activity for the hydrogen and oxygen evolution reaction.

Understanding synergistic metal–oxide interactions of in situ exsolved metal nanoparticles on a pyrochlore oxide support for enhanced water splitting

2021 ◽  
Author(s):  
Myeongjin Kim ◽  
Jinho Park ◽  
Hyun Ju ◽  
Jin Young Kim ◽  
Hyun-Seok Cho ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Oxide Support ◽  
Alkaline Conditions ◽  
Pyrochlore Oxide

Structure-controlled hybrid catalysts are prepared by carefully controlling the in situ exsolution process of metallic pyrochlore oxide for efficient oxygen evolution reaction and hydrogen evolution reaction under alkaline conditions.

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