Surface Oxidation of Stainless Steel: Oxygen Evolution Electrocatalysts with High Catalytic Activity

ACS Catalysis ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2671-2680 ◽  
Author(s):  
Helmut Schäfer ◽  
Seyyed Mohsen Beladi-Mousavi ◽  
Lorenz Walder ◽  
Joachim Wollschläger ◽  
Olga Kuschel ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Surface Oxidation ◽  
High Catalytic Activity

scholarly journals Stainless steel made to rust: a robust water-splitting catalyst with benchmark characteristics

2015 ◽  
Vol 8 (9) ◽  
pp. 2685-2697 ◽  
Author(s):  
Helmut Schäfer ◽  
Shamaila Sadaf ◽  
Lorenz Walder ◽  
Karsten Kuepper ◽  
Stephan Dinklage ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Surface Oxidation

Stainless steel was upon electro-initiated surface oxidation converted in an oxygen evolution reaction (OER) electrocatalyst with benchmark properties.

MOF-derived Fe,Co@N–C bifunctional oxygen electrocatalysts for Zn–air batteries

2020 ◽  
Vol 8 (18) ◽  
pp. 9355-9363 ◽  
Author(s):  
Xinde Duan ◽  
Shuangshuang Ren ◽  
Na Pan ◽  
Mingdao Zhang ◽  
Hegen Zheng
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
High Catalytic Activity ◽  
Reduction Reactions ◽  
Oxygen Reduction Reactions ◽  
Bifunctional Electrocatalysts

MOF-derived Fe,Co@N-C bifunctional electrocatalysts for oxygen reduction reactions and oxygen evolution reactions have been prepared via a scalable method, exhibiting ultra-high catalytic activity and promising performance in Zn–air batteries.

High-Performance Oxygen Evolution Anode from Stainless Steel via Controlled Surface Oxidation and Cr Removal

2017 ◽  
Vol 5 (11) ◽  
pp. 10072-10083 ◽  
Author(s):  
Sengeni Anantharaj ◽  
Murugadoss Venkatesh ◽  
Ashish S. Salunke ◽  
Tangella V. S. V. Simha ◽  
Vijayakumar Prabu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Oxygen Evolution ◽  
High Performance ◽  
Surface Oxidation ◽  
Cr Removal

High catalytic activity of oxygen-induced (200) surface of Ta2O5 nanolayer towards durable oxygen evolution reaction

Nano Energy ◽  
2016 ◽  
Vol 25 ◽  
pp. 60-67 ◽  
Author(s):  
Wen Xiao ◽  
Xiaolei Huang ◽  
Wendong Song ◽  
Yong Yang ◽  
Tun Seng Herng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Catalytic Activity

One-step synthesis of wire-in-plate nanostructured materials made of CoFe-LDH nanoplates coupled with Co(OH)2 nanowires grown on a Ni foam for a high-efficiency oxygen evolution reaction

2019 ◽  
Vol 55 (29) ◽  
pp. 4218-4221 ◽  
Author(s):  
Lingxi Zhou ◽  
Meichen Guo ◽  
Yao Li ◽  
Qin Gu ◽  
Wenqian Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Nanostructured Materials ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
High Catalytic Activity ◽  
Ni Foam ◽  
One Step

A series of wire-in-plate nanostructured electrocatalysts for OER with high catalytic activity were fabricated.

Molecule-level graphdiyne coordinated transition metals as a new class of bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions

2019 ◽  
Vol 21 (35) ◽  
pp. 19651-19659 ◽  
Author(s):  
Zhen Feng ◽  
Renyi Li ◽  
Yaqiang Ma ◽  
Yi Li ◽  
Dong Wei ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metals ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Single Atom ◽  
High Catalytic Activity ◽  
New Class ◽  
Bifunctional Electrocatalysts

Graphdiyne (GDY) could provide a unique platform for synthesizing uniform single-atom catalysts (SACs) with high catalytic activity toward oxygen reduction (ORR) and oxygen evolution (OER) reactions.

scholarly journals Ab Initio Thermodynamics of Iridium Surface Oxidation and Oxygen Evolution Reaction

2018 ◽  
Author(s):  
Konstantin Klyukin ◽  
Alexandra Zagalskaya ◽  
Vitaly Alexandrov
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Density Functional ◽  
Surface Oxidation ◽  
Adsorbed Water ◽  
Nucleophilic Attack ◽  
The Density Functional Theory ◽  
Stability Maps ◽  
Electrochemical Cycling

<p>Iridium-based materials are considered as state-of-the-art electrocatalysts for oxygen evolution reaction (OER), however, their stability and catalytic activity greatly depend on surface-state changes induced by electrochemical cycling. To better understand the behavior of the low-index Ir surfaces in an electrochemical environment, we perform a systematic thermodynamic analysis by means of the density functional theory (DFT) calculations. Based on computed surface energies of the Ir(111), (110) and (100) facets as a function of applied electrode potential and coverage of adsorbed water species we determine stability maps and predict equilibrium shapes of Ir nanoparticles. Our calculations also show that metastable oxide precursors formed at the initial stages of Ir surface oxidation are responsible for enhanced catalytic activity towards OER as compared to metal surfaces covered by oxygen adsorbates and thick-oxide films. Such enhancement occurs not only due to the modified thermodynamic stability of OER intermediates, but also because thin-oxide layers may display the more energetically favorable I2M (interaction of two M-O units) rather than WNA (water nucleophilic attack) OER mechanism.</p><br>

Efficient oxygen evolution electrocatalyzed by a Cu nanoparticle-embedded N-doped carbon nanowire array

2018 ◽  
Vol 5 (5) ◽  
pp. 1188-1192 ◽  
Author(s):  
Xiaojuan Zhu ◽  
Xifeng Shi ◽  
Abdullah M. Asiri ◽  
Yonglan Luo ◽  
Xuping Sun
Keyword(s):  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Current Density ◽  
Nanowire Array ◽  
High Catalytic Activity ◽  
Copper Foam ◽  
Carbon Nanowire ◽  
Cu Nanoparticle

A Cu nanoparticle-embedded N-doped carbon nanowire array on copper foam (Cu–N–C NA/CF) shows high catalytic activity, needing an overpotential of 314 mV to drive a geometrical current density of 20 mA cm−2 in 1.0 M KOH.

scholarly journals Electrochemical impacts of sheet-like hafnium phosphide and hafnium disulfide catalysts bonded with reduced graphene oxide sheets for bifunctional oxygen reactions in alkaline electrolytes

RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2599-2607 ◽  
Author(s):  
Mayilvel Dinesh Meganathan ◽  
Taizhong Huang ◽  
Hengyi Fang ◽  
Jianfeng Mao ◽  
Guoxin Sun
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Oxygen Evolution ◽  
High Catalytic Activity ◽  
Oxygen Reduction Reactions ◽  
Reduced Graphene ◽  
Alkaline Electrolytes ◽  
Graphene Oxide Sheets

Sheet-like structured hafnium phosphide (HfP) and hafnium disulphide (HfS2) catalysts show high catalytic activity for both oxygen evolution and oxygen reduction reactions, which are determined by the compositional anion ions.

scholarly journals Nickel nanoparticles supported on a covalent triazine framework as electrocatalyst for oxygen evolution reaction and oxygen reduction reactions

2020 ◽  
Vol 11 ◽  
pp. 770-781
Author(s):  
Secil Öztürk ◽  
Yu-Xuan Xiao ◽  
Dennis Dietrich ◽  
Beatriz Giesen ◽  
Juri Barthel ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Nickel Nanoparticles ◽  
Reduction Reaction ◽  
High Catalytic Activity ◽  
Potential Candidate ◽  
Half Wave ◽  
Covalent Triazine Framework

Covalent triazine frameworks (CTFs) are little investigated, albeit they are promising candidates for electrocatalysis, especially for the oxygen evolution reaction (OER). In this work, nickel nanoparticles (from Ni(COD)2) were supported on CTF-1 materials, which were synthesized from 1,4-dicyanobenzene at 400 °C and 600 °C by the ionothermal method. CTF-1-600 and Ni/CTF-1-600 show high catalytic activity towards OER and a clear activity for the electrochemical oxygen reduction reaction (ORR). Ni/CTF-1-600 requires 374 mV overpotential in OER to reach 10 mA/cm2, which outperforms the benchmark RuO2 catalyst, which requires 403 mV under the same conditions. Ni/CTF-1-600 displays an OER catalytic activity comparable with many nickel-based electrocatalysts and is a potential candidate for OER. The same Ni/CTF-1-600 material shows a half-wave potential of 0.775 V for ORR, which is slightly lower than that of commercial Pt/C (0.890 V). Additionally, after accelerated durability tests of 2000 cycles, the material showed only a slight decrease in activity towards both OER and ORR, demonstrating its superior stability.

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