Self-supported Ni3S2@Ni2P/MoS2 heterostructure on nickel foam for outstanding oxygen evolution reaction and efficient overall water splitting

2021 ◽  
Author(s):  
Xin Yu ◽  
Siran Xu ◽  
Zhe Wang ◽  
Shan Wang ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Free Energy ◽  
Hydrogen Production ◽  
Energy Saving ◽  
Water Splitting ◽  
Efficient Method ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
Noble Metal Catalysts ◽  
High Overpotentials ◽  
Low Efficiency

Hydrogen production by electrocatalytic water splitting is a pollution-free, energy-saving, efficient method. The low efficiency of hydrogen production, high overpotentials and expensive noble-metal catalysts have limited the development of hydrogen...

Sulfide-oxidation-assisted electrochemical water splitting for H2 production on a bifunctional Cu2S/nickel foam catalyst

2021 ◽  
Author(s):  
Yuhou Pei ◽  
Jiong Cheng ◽  
Heng Zhong ◽  
Zhenfeng Pi ◽  
Zhao Yu ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Oxidation Reaction ◽  
Nickel Foam ◽  
Sulfide Oxidation ◽  
H2 Production ◽  
Electro Oxidation ◽  
Electrochemical Water Splitting

Replacing the sluggish oxygen evolution reaction (OER) by sulfide electro-oxidation reaction (SOR) could be a promising way to decrease the energy consumption for hydrogen evolution reaction (HER) and to treat...

Fe-Co-P multi-heterostructure arrays for efficient electrocatalytic water splitting

2021 ◽  
Author(s):  
Hanwen Xu ◽  
Jiawei Zhu ◽  
Pengyan Wang ◽  
Ding Chen ◽  
Chengtian Zhang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Rational Design ◽  
Large Scale ◽  
High Efficiency ◽  
Bifunctional Catalysts

Rational design and construction of high-efficiency bifunctional catalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is crucial for large-scale hydrogen production by water splitting. Herein, by a...

scholarly journals Nickel foam and stainless steel mesh as electrocatalysts for hydrogen evolution reaction, oxygen evolution reaction and overall water splitting in alkaline media

RSC Advances ◽  
2019 ◽  
Vol 9 (54) ◽  
pp. 31563-31571 ◽  
Author(s):  
Xiaoyan Hu ◽  
Xuemei Tian ◽  
Ying-Wu Lin ◽  
Zhonghua Wang
Keyword(s):  
Stainless Steel ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Nickel Foam ◽  
Low Cost ◽  
Alkaline Media ◽  
Stainless Steel Mesh ◽  
Steel Mesh ◽  
Overall Water Splitting

Efficient electrocatalytic overall water splitting is achieved with commercially-available and low-cost nickel foam and stainless steel mesh as cathode and anode electrodes.

Anodic hydrazine oxidation assisted hydrogen evolution over bimetallic RhIr mesoporous nanospheres

2021 ◽  
Author(s):  
Mei Zhang ◽  
Ziqiang Wang ◽  
Zhongyao Duan ◽  
Shengqi Wang ◽  
You Xu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Energy Saving ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Oxidation Reaction ◽  
Hydrazine Oxidation

Replacing sluggish anodic oxygen evolution reaction with thermodynamically favorable hydrazine oxidation reaction (HzOR) is a powerful energy-saving approach for hydrogen production, and the efficiency of this process mainly relies on...

Ultrathin Rh nanosheets as a highly efficient bifunctional electrocatalyst for isopropanol-assisted overall water splitting

Nanoscale ◽  
2019 ◽  
Vol 11 (19) ◽  
pp. 9319-9326 ◽  
Author(s):  
Yue Zhao ◽  
Shihui Xing ◽  
Xinying Meng ◽  
Jinghui Zeng ◽  
Shibin Yin ◽  
...  
Keyword(s):  
Energy Saving ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Oxidation Reaction ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Overall Water Splitting

In this work, we report energy-saving H2 production by replacing the oxygen evolution reaction with the thermodynamic favorable isopropanol oxidation reaction (IOR) based on a bifunctional ultrathin Rh nanosheets electrocatalyst (Rh-NSs), which only requires the voltage of 0.4 V to achieve the H2 and acetone co-production.

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.

Controllable synthesis of multidimensional carboxylic acid-based NiFe MOFs as efficient electrocatalysts for oxygen evolution

2021 ◽  
Author(s):  
Bao Yu Xia ◽  
Kaihang Yue ◽  
Jianglin Liu ◽  
Chenfeng Xia ◽  
Ke Zhan ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Controllable Synthesis ◽  
High Overpotentials

Oxygen evolution reaction (OER), as an essential half reaction of water splitting that producing green hydrogen, has been subject to high overpotentials and restrictions on the use of noble metal...

Defects as catalytic sites for the oxygen evolution reaction in Earth-abundant MOF-74 revealed by DFT

2021 ◽  
Author(s):  
Jordi Morales-Vidal ◽  
Rodrigo García-Muelas ◽  
Manuel A. Ortuño
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Atomic Level ◽  
Catalytic Sites ◽  
Earth Abundant

The oxygen evolution reaction (OER) is the bottleneck of hydrogen production via water splitting and understanding electrocatalysts at atomic level becomes paramount to enhance the efficiency of this process.

Integrating energy-saving hydrogen production with methanol electrooxidation over Mo modified Co4N nanoarrays

2021 ◽  
Author(s):  
Tongzhou Wang ◽  
Xuejie Cao ◽  
Hongye Qin ◽  
Xuchun Chen ◽  
Jinhong Li ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Energy Saving ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Value Added ◽  
Methanol Electrooxidation ◽  
Highly Efficient ◽  
Kinetics Of

The intrinsically sluggish kinetics of anodic oxygen evolution reaction (OER) is deemed as the bottleneck for highly efficient electrocatalytic hydrogen production, and the by-product is the less value-added oxygen. Herein,...

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