Nickel-Borate with 3D Hierarchical Structure as a Robust and Efficient Electrocatalyst for Urea Oxidation

2021 ◽  
Author(s):  
Jianhua Ge ◽  
yuecheng Lai ◽  
Minghui Guan ◽  
Yuhua Xiao ◽  
Juner Kuang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Hierarchical Structure ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Hydrogen Fuel ◽  
Fuel Production ◽  
Slow Kinetics ◽  
Kinetics Of

Water electrolysis has become a promisingly green and sustainable strategy for hydrogen fuel production. However, due to the slow kinetics of the oxygen evolution reaction (OER), large overpotentials are required...

Sandwich-like CoP/C nanocomposites as efficient and stable oxygen evolution catalysts

2016 ◽  
Vol 4 (23) ◽  
pp. 9072-9079 ◽  
Author(s):  
Yuanjuan Bai ◽  
Huijuan Zhang ◽  
Yangyang Feng ◽  
Li Fang ◽  
Yu Wang
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Stable Oxygen ◽  
Kinetics Of

Nowadays, the sluggish kinetics of the oxygen evolution reaction (OER) has been a bottleneck factor in water electrolysis.

Rod-like nickel doped Co3Se4/reduced graphene oxide hybrids as efficient electrocatalysts for oxygen evolution reactions

Nanoscale ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 3698-3708
Author(s):  
Wenlong Ye ◽  
Yanan Zhang ◽  
Jinchen Fan ◽  
Penghui Shi ◽  
Yulin Min ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Catalyst ◽  
Highly Active ◽  
Slow Kinetics ◽  
Reduced Graphene ◽  
Kinetics Of

Highly active catalyst of Ni-doped rod-like Co3Se4/reduced graphene oxide was designed for reducing the overpotential and improving the slow kinetics of the process toward electrocatalytic oxygen evolution reaction (OER).

scholarly journals Boosting Lattice Oxygen Oxidation of Perovskite to Efficiently Catalyze Oxygen Evolution Reaction by FeOOH Decoration

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Jia-Wei Zhao ◽  
Cheng-Fei Li ◽  
Zi-Xiao Shi ◽  
Jie-Lun Guan ◽  
Gao-Ren Li
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Lattice Oxygen ◽  
Intrinsic Activity ◽  
Fast Reaction ◽  
Synergistic Catalysis ◽  
Slow Kinetics ◽  
Oxygen Oxidation ◽  
Kinetics Of

In the process of oxygen evolution reaction (OER) on perovskite, it is of great significance to accelerate the hindered lattice oxygen oxidation process to promote the slow kinetics of water oxidation. In this paper, a facile surface modification strategy of nanometer-scale iron oxyhydroxide (FeOOH) clusters depositing on the surface of LaNiO3 (LNO) perovskite is reported, and it can obviously promote hydroxyl adsorption and weaken Ni-O bond of LNO. The above relevant evidences are well demonstrated by the experimental results and DFT calculations. The excellent hydroxyl adsorption ability of FeOOH-LaNiO3 (Fe-LNO) can obviously optimize OH- filling barriers to promote lattice oxygen-participated OER (LOER), and the weakened Ni-O bond of LNO perovskite can obviously reduce the reaction barrier of the lattice oxygen participation mechanism (LOM). Based on the above synergistic catalysis effect, the Fe-LNO catalyst exhibits a maximum factor of 5 catalytic activity increases for OER relative to the pristine perovskite and demonstrates the fast reaction kinetics (low Tafel slope of 42 mV dec-1) and superior intrinsic activity (TOFs of ~40 O2 S-1 at 1.60 V vs. RHE).

The influence of ruthenium substitution in LaCoO3 towards bi-functional electrocatalytic activity for rechargeable Zn–air batteries

2020 ◽  
Vol 8 (39) ◽  
pp. 20612-20620
Author(s):  
Shivaraju Guddehalli Chandrappa ◽  
Prabu Moni ◽  
Dehong Chen ◽  
Guruprakash Karkera ◽  
Kunkanadu R. Prakasha ◽  
...  
Keyword(s):  
Energy Storage ◽  
Oxygen Reduction Reaction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Slow Kinetics ◽  
Air Battery ◽  
Energy Storage Applications ◽  
Kinetics Of

The rechargeable zinc–air battery is a clean technology for energy storage applications but is impeded by the slow kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) during its cycling.

Self-assembled CoSe2-FeSe2 Heteronanoparticles along the Carbon Nanotubes Network for Boosted Oxygen Evolution Reaction

Nanoscale ◽  
2021 ◽  
Author(s):  
Bin Wang ◽  
Katam Srinivas ◽  
Xinqiang Wang ◽  
Zhe Su ◽  
Bo Yu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Fuel Combustion ◽  
Alternative Technique ◽  
Hydrogen Fuel ◽  
Self Assembled

Water electrolysis is a significant alternative technique to produce clean hydrogen fuel in order to replace the environmentally distructive fossile fuel combustion. However, the sluggish oxygen evolution kintetics make this...

scholarly journals The Effect of Iron Impurities on Transition Metal Catalysts for the Oxygen Evolution Reaction in Alkaline Environment: Activity Mediators or Active Sites?

2020 ◽  
Author(s):  
Ioannis Spanos ◽  
Justus Masa ◽  
Aleksandar Zeradjanin ◽  
Robert Schlögl
Keyword(s):  
Transition Metal ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Water Electrolysis ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Alkaline Water Electrolysis ◽  
Co Catalysts ◽  
Model Transition

AbstractThere is an ongoing debate on elucidating the actual role of Fe impurities in alkaline water electrolysis, acting either as reactivity mediators or as co-catalysts through synergistic interaction with the main catalyst material. This perspective summarizes the most prominent oxygen evolution reaction (OER) mechanisms mostly for Ni-based oxides as model transition metal catalysts and highlights the effect of Fe incorporation on the catalyst surface in the form of impurities originating from the electrolyte or co-precipitated in the catalyst lattice, in modulating the OER reaction kinetics, mechanism and stability. Graphic Abstract

LDH-derived phosphide/N-doped graphene oxide hierarchical electrocatalyst for enhanced oxygen evolution reaction

CrystEngComm ◽  
2022 ◽  
Author(s):  
Meng Ya Yang ◽  
Rong Zhao ◽  
Yi Liu ◽  
Hua Lin
Keyword(s):  
Graphene Oxide ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hierarchical Structure ◽  
Oxygen Evolution Reaction ◽  
High Efficient ◽  
Doped Graphene ◽  
Double Hydroxide

In this work, high efficient electrocatalyst Fe-Ni2P/N-GO with hierarchical structure was developed through phosphating NiFe-based layered double hydroxide (LDH) supported by N-doped graphene oxide (GO), which was assembled by the...

Hierarchical Microsphere MOF Arrays with Ultralow Ir Doping for Efficient Hydrogen Evolution Coupled with Hydrazine Oxidation in Seawater

2021 ◽  
Author(s):  
Xuejun Zhai ◽  
Qingping Yu ◽  
Guishan Liu ◽  
Junlu Bi ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Water Electrolysis ◽  
Efficient Catalyst ◽  
Hydrazine Oxidation ◽  
Renewable Hydrogen

Hydrogen evolution reaction (HER) based on water electrolysis is promising for renewable hydrogen production. Limited by sluggish anodic oxygen evolution reaction (OER), rational fabrication of efficient catalyst for HER coupled...

Lattice Oxygen Redox Chemistry in Solid-State Electrocatalysts for Water Oxidation

2021 ◽  
Author(s):  
Ning Zhang ◽  
Yang Chai
Keyword(s):  
Solid State ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Water Electrolysis ◽  
Redox Chemistry ◽  
Lattice Oxygen ◽  
Vital Importance ◽  
Production Of Hydrogen ◽  
Overall Efficiency

Fundamental understandings towards oxygen evolution reaction (OER) are of vital importance as it dominates the overall efficiency of water electrolysis – a compelling technique for sustainable production of hydrogen feedstock....

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