scholarly journals Ni foam electrode solution impregnated with Ni-FeX(OH)Y catalysts for efficient oxygen evolution reaction in alkaline electrolyzers

RSC Advances ◽  
2020 ◽  
Vol 10 (43) ◽  
pp. 25426-25434
Author(s):  
Dipanjan Sengupta ◽  
Stefania M. S. Privitera ◽  
Rachela Gabriella Milazzo ◽  
Corrado Bongiorno ◽  
Silvia Scalese ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Ni Foam ◽  
Oxygen Evolving ◽  
Splitting Process

Modification of Ni foam electrode by FeCl3·6H2O and HCl, towards superior oxygen-evolving electrocatalyst for water splitting process.

scholarly journals MoS2/Ni3S2 nanorod arrays well-aligned on Ni foam: a 3D hierarchical efficient bifunctional catalytic electrode for overall water splitting

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46286-46296 ◽  
Author(s):  
Nan Zhang ◽  
Junyu Lei ◽  
Jianpeng Xie ◽  
Haiyan Huang ◽  
Ying Yu
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Nanorod Arrays ◽  
Ni Foam ◽  
Overall Water Splitting

A novel 3D hierarchical bifunctional catalytic electrode, MoS2/Ni3S2 nanorod arrays well-aligned on NF exhibited excellent electrocatalytic efficiency for hydrogen evolution reaction, oxygen evolution reaction and overall water splitting.

Tuning the electronic structure of NiCoVOx nanosheets through S doping for enhanced oxygen evolution

Nanoscale ◽  
2021 ◽  
Author(s):  
Haibin Ma ◽  
ChangNing SUN ◽  
Zhili Wang ◽  
Qing Jiang
Keyword(s):  
Electronic Structure ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Ni Foam ◽  
Electrochemical Water Splitting

It is of great importance to develop efficient and low-cost oxygen evolution reaction (OER) electrocatalysts for electrochemical water splitting. Herein, S doped NiCoVOx nanosheets grown on Ni-Foam (S-NiCoVOx/NF) with modified...

scholarly journals Influence of Chiral Compounds on the Oxygen Evolution Reaction (OER) in the Water Splitting Process

2020 ◽  
Author(s):  
Mirko Gazzotti ◽  
Andrea Stefani ◽  
Marco Bonechi ◽  
Walter Giurlani ◽  
Massimo Innocenti ◽  
...  
Keyword(s):  
Tartaric Acid ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Bulk Solution ◽  
Potential Range ◽  
Chiral Compound ◽  
Chiral Compounds ◽  
Electrodeposited Nickel ◽  
Splitting Process

Results are presented concerning the influence on the water splitting process of enantiopure tartaric acid present in bulk solution. Stainless steel and electrodeposited nickel are used as working electrode (WE) surface. The latter is obtained by electrodeposition on the two poles of a magnet. The influence and role played by the chiral compound in solution has been assessed by comparing the current values, in cyclic voltammetry (CV) experiments, recorded in the potential range at which oxygen evolution reaction (OER) occurs. In the case of tartaric acid and nickel WE a spin polarization of about 4 % is found. The use of the chiral environment (bulk solution) and ferromagnetic chiral Ni electrode allows for observing the OER at a more favourable potential: about 50 mV (i.e. a cathodic, less positive, shift of the potential at which the oxygen evolution is observed).

scholarly journals Electrochemical Synergies of Heterostructured Fe2O3-MnO Redox Couple for Oxygen Evolution Reaction in Alkaline Water Splitting

2019 ◽  
Author(s):  
Junyeong Kim ◽  
Jun Neoung Heo ◽  
Jeong Yeon Do ◽  
Rama Krishna Chava ◽  
Misook Kang
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Photoelectron Spectroscopy ◽  
Oxygen Evolution Reaction ◽  
Redox Reaction ◽  
Sol Gel ◽  
Alkaline Electrolyte ◽  
Ni Foam ◽  
X Ray ◽  
Electrolysis System

For efficient electrode development in an electrolysis system, Fe2O3, MnO, and heterojunction Fe2O3-MnO materials were synthesized via a simple sol-gel method. These particles were coated on a Ni-foam electrode, and the resulting material was used as an electrode to be used during an oxygen evolution reaction (OER). A 1000-cycle OER test in a KOH alkaline electrolyte indicated that the heterojunction Fe2O3-MnO/NF electrode exhibited the most stable and highest OER activity: it exhibited a low overvoltage (n) of 370 mV and a small Tafel slope of 66 mV/dec. X-ray photoelectron spectroscopy indicated that the excellent redox performance contributed to the synergy of Mn and Fe, which enhanced the OER performance of the Fe2O3-MnO/NF electrode. Furthermore, the effective redox reaction of Mn and Fe indicated that the structure maintained stability even under 1000 repeated OER cycles.

scholarly journals Influence of Chiral Compounds on the Oxygen Evolution Reaction (OER) in the Water Splitting Process

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3988
Author(s):  
Mirko Gazzotti ◽  
Andrea Stefani ◽  
Marco Bonechi ◽  
Walter Giurlani ◽  
Massimo Innocenti ◽  
...  
Keyword(s):  
Tartaric Acid ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Bulk Solution ◽  
Potential Range ◽  
Chiral Compound ◽  
Chiral Compounds ◽  
Electrodeposited Nickel ◽  
Splitting Process

Results are presented concerning the influence on the water splitting process of enantiopure tartaric acid present in bulk solution. Stainless steel and electrodeposited nickel are used as working electrode (WE) surface. The latter is obtained by electrodeposition on the two poles of a magnet. The influence and role played by the chiral compound in solution has been assessed by comparing the current values, in cyclic voltammetry (CV) experiments, recorded in the potential range at which oxygen evolution reaction (OER) occurs. In the case of tartaric acid and nickel WE a spin polarization of about 4% is found. The use of the chiral environment (bulk solution) and ferromagnetic chiral Ni electrode allows for observing the OER at a more favorable potential: About 50 mV (i.e., a cathodic, less positive, shift of the potential at which the oxygen evolution is observed).

Understanding the role of fluorination on the mechanistic nature of the water splitting process catalyzed by cobalt tris-(2-pyridylmethyl) amine complex

2021 ◽  
Author(s):  
Koteswara Rao Gorantla ◽  
Bhabani S. Mallik
Keyword(s):  
Reaction Mechanism ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Cobalt Complexes ◽  
Oxygen Oxygen ◽  
Amine Complex ◽  
Oxygen Bond ◽  
Splitting Process

We report the reaction mechanism of the oxygen evolution reaction catalyzed by penta-coordinated [(CoV(TPA-αF3)(O)]3+ (TPA=tri-(2-pyridylmethyl) amine) and hexa-coordinated [(CoV(TPA-αF3)(O)OH]2+ cobalt complexes for the formation of the oxygen-oxygen bond and role...

Mo, Co co-doped NiS bulks supported on Ni foam as an efficient electrocatalyst for overall water splitting in alkaline media

2020 ◽  
Vol 4 (4) ◽  
pp. 1654-1664 ◽  
Author(s):  
Caiyun Wu ◽  
Yunmei Du ◽  
Yunlei Fu ◽  
Di Feng ◽  
Hui Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Alkaline Media ◽  
Ni Foam ◽  
Simple Method ◽  
Overall Water Splitting ◽  
Co Doped

In this study, a composite of Mo, Co co-doped NiS bulks grown on an Ni foam (Mo,Co-NiS/NF) was synthesized as a bi-functional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) using a simple method.

scholarly journals Oxygen evolution reaction activity and underlying mechanism of perovskite electrocatalysts at different pH

2021 ◽  
Author(s):  
Bae-Jung Kim ◽  
Emiliana Fabbri ◽  
Mario Borlaf ◽  
Daniel F. Abbott ◽  
Ivano E. Castelli ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Underlying Mechanism ◽  
Perovskite Oxide ◽  
Anodic Reaction ◽  
Splitting Process

The members of the perovskite oxide family have been vastly explored for their potential as active electrocatalysts for an efficient anodic reaction (i.e. the oxygen evolution reaction, OER) of the water splitting process.

N-doped carbon coated NiCo2O4 Nanorods for efficient electrocatalytic oxygen evolution

2021 ◽  
Author(s):  
Muhammad Ahmad ◽  
Baojuan Xi ◽  
Yu Gu ◽  
Shenglin Xiong
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Hydrogen Fuel ◽  
Carbon Coated ◽  
Nico2o4 Nanorods ◽  
Splitting Process

Oxygen evolution reaction (OER) is considered as an imperative step in electrocatalytic water splitting process to obtain clean hydrogen fuel. The scarcity of noble metal impedes the practice of such...

scholarly journals Electrochemical Synergies of Heterostructured Fe2O3-MnO Catalyst for Oxygen Evolution Reaction in Alkaline Water Splitting

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1486 ◽  
Author(s):  
Junyeong Kim ◽  
Jun Neoung Heo ◽  
Jeong Yeon Do ◽  
Rama Krishna Chava ◽  
Misook Kang
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Photoelectron Spectroscopy ◽  
Oxygen Evolution Reaction ◽  
Redox Reaction ◽  
Sol Gel ◽  
Alkaline Electrolyte ◽  
Ni Foam ◽  
X Ray ◽  
Electrolysis System

For efficient electrode development in an electrolysis system, Fe2O3, MnO, and heterojunction Fe2O3-MnO materials were synthesized via a simple sol–gel method. These particles were coated on a Ni-foam (NF) electrode, and the resulting material was used as an electrode to be used during an oxygen evolution reaction (OER). A 1000-cycle OER test in a KOH alkaline electrolyte indicated that the heterojunction Fe2O3-MnO/NF electrode exhibited the most stable and highest OER activity: it exhibited a low overvoltage (n) of 370 mV and a small Tafel slope of 66 mV/dec. X-ray photoelectron spectroscopy indicated that the excellent redox performance contributed to the synergy of Mn and Fe, which enhanced the OER performance of the Fe2O3-MnO/NF electrode. Furthermore, the effective redox reaction of Mn and Fe indicated that the structure maintained stability even under 1000 repeated OER cycles.

Sign in / Sign up

Export Citation Format

Share Document