scholarly journals Direct One-Step Growth of Bimetallic Ni2Mo3N on Ni Foam as an Efficient Oxygen Evolution Electrocatalyst

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4768
Author(s):  
Sang Heon Park ◽  
Soon Hyung Kang ◽  
Duck Hyun Youn
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Catalytic Performance ◽  
Alkaline Electrolyte ◽  
Synthetic Route ◽  
Ni Foam ◽  
One Pot ◽  
One Step ◽  
Step Growth ◽  
Amorphous Surface

A simple and economical synthetic route for direct one-step growth of bimetallic Ni2Mo3N nanoparticles on Ni foam substrate (Ni2Mo3N/NF) and its catalytic performance during an oxygen evolution reaction (OER) are reported. The Ni2Mo3N/NF catalyst was obtained by annealing a mixture of a Mo precursor, Ni foam, and urea at 600 °C under N2 flow using one-pot synthesis. Moreover, the Ni2Mo3N/NF exhibited high OER activity with low overpotential values (336.38 mV at 50 mA cm−2 and 392.49 mV at 100 mA cm−2) and good stability for 5 h in Fe-purified alkaline electrolyte. The Ni2Mo3N nanoparticle surfaces converted into amorphous surface oxide species during the OER, which might be attributed to the OER 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.

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.

One-step electrodeposition of NixFe3−xO4/Ni hybrid nanosheet arrays as highly active and robust electrocatalysts for the oxygen evolution reaction

2020 ◽  
Vol 22 (5) ◽  
pp. 1710-1719
Author(s):  
Dongjie Li ◽  
Suqin Liu ◽  
Guanying Ye ◽  
Weiwei Zhu ◽  
Kuangmin Zhao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Catalytic Performance ◽  
Highly Active ◽  
Nanosheet Arrays ◽  
One Step ◽  
Template Free ◽  
Excellent Catalytic Performance

NixFe3−xO4/Ni hybrid nanosheet arrays have been directly fabricated on different substrates via template-free and annealing-free one-step electrodeposition, which show excellent catalytic performance for the oxygen evolution reaction.

Nickel-doped pyrrhotite iron sulfide nanosheets as a highly efficient electrocatalyst for water splitting

2020 ◽  
Vol 8 (39) ◽  
pp. 20323-20330
Author(s):  
Zhongxin Jing ◽  
Qingyun Zhao ◽  
Dehua Zheng ◽  
Lei Sun ◽  
Jiahui Geng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Iron Sulfide ◽  
Synthetic Route ◽  
One Pot ◽  
Highly Efficient

We synthesized nickel-doped pyrrhotite iron sulfide nanosheets via a one-pot synthetic route, with great oxygen evolution reaction and hydrogen evolution reaction activities.

One-Step Growth of Iron–Nickel Bimetallic Nanoparticles on FeNi Alloy Foils: Highly Efficient Advanced Electrodes for the Oxygen Evolution Reaction

2017 ◽  
Vol 9 (34) ◽  
pp. 28627-28634 ◽  
Author(s):  
Umair Yaqub Qazi ◽  
Cheng-Zong Yuan ◽  
Naseeb Ullah ◽  
Yi-Fan Jiang ◽  
Muhammad Imran ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Bimetallic Nanoparticles ◽  
Highly Efficient ◽  
Iron Nickel ◽  
One Step ◽  
Step Growth ◽  
Feni Alloy

One-step growth of nitrogen-decorated iron–nickel sulfide nanosheets for the oxygen evolution reaction

2018 ◽  
Vol 6 (14) ◽  
pp. 5592-5597 ◽  
Author(s):  
Yanshuo Jin ◽  
Xin Yue ◽  
Hongyu Du ◽  
Kai Wang ◽  
Shangli Huang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Nickel Sulfide ◽  
Major Obstacle ◽  
Commercial Application ◽  
Iron Nickel ◽  
One Step ◽  
Step Growth

The large overpotential loss of the oxygen evolution reaction (OER) is a major obstacle restricting the wide commercial application of water-splitting devices.

Phosphine-free avenue to Co2P nanoparticle encapsulated N,P co-doped CNTs: a novel non-enzymatic glucose sensor and an efficient electrocatalyst for oxygen evolution reaction

2017 ◽  
Vol 19 (5) ◽  
pp. 1327-1335 ◽  
Author(s):  
Debanjan Das ◽  
Abhinaba Das ◽  
Meera Reghunath ◽  
Karuna Kar Nanda
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Glucose Sensor ◽  
One Pot ◽  
One Step ◽  
Co Doped

A novel one-step, one-pot strategy to synthesize Co2P encapsulated N,P dual doped carbon nanotubes (Co2P/NPCNTs) is developed via a g-C3N4 intermediated approach.

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.

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...

Co2P nanoparticle/multi-doped porous carbon nanosheets for the oxygen evolution reaction

2021 ◽  
Author(s):  
Xinxin Sang ◽  
Hengbo Wu ◽  
Nan Zang ◽  
Huilian Che ◽  
Dongyin Liu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Porous Carbon ◽  
Oxygen Evolution Reaction ◽  
Catalytic Performance ◽  
Carbon Nanosheets

Co2P hybridized with multi-doped carbon nanoleaves is obtained via direct carbonization of ZIF-L/PEI/PA and show good electro-catalytic performance in OER.

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