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.

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 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...

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.

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 Controlling the Size and Pattern Pitch of Ni(OH)2 Nanoclusters Using Dip-Pen Nanolithography to Improve Water Oxidation

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2937
Author(s):  
Zorik Shamish ◽  
Moshe Zohar ◽  
Dror Shamir ◽  
Ariela Burg
Keyword(s):  
Surface Area ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Large Surface Area ◽  
Splitting Process ◽  
Dip Pen Nanolithography

We use dip-pen nanolithography to accurately pattern Ni(OH)2 nanoclusters on a metachemical surface with an exceptionally large surface area. The distance between the nanoclusters can be manipulated to control the oxygen-evolution reaction current and overpotential, thereby improving the efficiency of the water-splitting process while using minute amounts of the catalyst.

The in situ derivation of a NiFe-LDH ultra-thin layer on Ni-BDC nanosheets as a boosted electrocatalyst for the oxygen evolution reaction

CrystEngComm ◽  
2021 ◽  
Author(s):  
Qibing Dong ◽  
Chao Shuai ◽  
Zunli Mo ◽  
Ruibin Guo ◽  
Nijuan Liu ◽  
...  
Keyword(s):  
Thin Layer ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Splitting Process ◽  
Organic Framework

A Ni-based metal organic framework (Ni-BDC) and subsequently derived NiFe-LDH were studied to overcome the defect of the low availability of active sites for the oxygen evolution reaction (OER) during the water splitting process.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

High Surface Area NiCoP Nanostructure as Efficient Water Splitting Electrocatalyst for the Oxygen Evolution Reaction

2021 ◽  
pp. 111312
Author(s):  
Sisir Maity ◽  
Dheeraj Kumar Singh ◽  
Divya Bhutani ◽  
Suchitra Prasad ◽  
Umesh V. Waghmare ◽  
...  
Keyword(s):  
Surface Area ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Surface ◽  
High Surface Area

Cathodic Corrosion Activated Fe-based Nanoglass as Highly-Active and -Stable Oxygen Evolution Catalyst for Water Splitting

2021 ◽  
Author(s):  
Kaiyao Wu ◽  
Fei Chu ◽  
Yuying Meng ◽  
Kaveh Edalati ◽  
Qingsheng Gao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Amorphous Alloys ◽  
Precious Metal ◽  
Active Sites ◽  
Metal Free ◽  
Highly Active ◽  
Stable Oxygen ◽  
Surface Active

Transition metal-based amorphous alloys have attracted increasing attention as precious-metal-free electrocatalysts for oxygen evolution reaction (OER) of water splitting due to their high macro-conductivity and abundant surface active sites. However,...

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