Nickel selenide as a high-efficiency catalyst for oxygen evolution reaction

2016 ◽  
Vol 9 (5) ◽  
pp. 1771-1782 ◽  
Author(s):  
A. T. Swesi ◽  
J. Masud ◽  
M. Nath
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Onset Potential ◽  
Alkaline Conditions

Ni3Se2 has been identified as a high-efficiency oxygen evolution catalyst with low onset potential and extended stability under alkaline conditions.

scholarly journals Robust Carbon-Stabilization of Few-Layer Black Phosphorus for Superior Oxygen Evolution Reaction

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 695 ◽  
Author(s):  
Mengjie Zhang ◽  
Wenchang Zhu ◽  
Xingzhe Yang ◽  
Meng Feng ◽  
Hongbin Feng
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Black Phosphorus ◽  
Carbon Stabilization ◽  
High Durability ◽  
Carbon Coated ◽  
Alkaline Conditions ◽  
Doped Graphene ◽  
A Current

Few-layer exfoliated black phosphorus (Ex-BP) has attracted tremendous attention owing to its promising applications, including in electrocatalysis. However, it remains a challenge to directly use few-layer Ex-BP as oxygen-involved electrocatalyst because it is quite difficult to restrain structural degradation caused by spontaneous oxidation and keep it stable. Here, a robust carbon-stabilization strategy has been implemented to prepare carbon-coated Ex-BP/N-doped graphene nanosheet (Ex-BP/NGS@C) nanostructures at room temperature, which exhibit superior oxygen evolution reaction (OER) activity under alkaline conditions. Specifically, the as-synthesized Ex-BP/NGS@C hybrid presents a low overpotential of 257 mV at a current density of 10 mA cm−2 with a small Tafel slope of 52 mV dec−1 and shows high durability after long-term testing.

Revealing the structural transformation of rutile RuO2via in situ X-ray absorption spectroscopy during the oxygen evolution reaction

2019 ◽  
Vol 48 (21) ◽  
pp. 7122-7129 ◽  
Author(s):  
Chia-Jui Chang ◽  
You-Chiuan Chu ◽  
Hao-Yu Yan ◽  
Yen-Fa Liao ◽  
Hao Ming Chen
Keyword(s):  
Oxygen Evolution ◽  
Structural Transformation ◽  
Absorption Spectroscopy ◽  
Oxygen Evolution Reaction ◽  
The State ◽  
X Ray ◽  
Alkaline Conditions ◽  
X Ray Absorption ◽  
State Of Art

The state-of-art RuO2 catalyst for the oxygen evolution reaction (OER) is measured by using in situ X-ray absorption spectroscopy (XAS) to elucidate the structural transformation during catalyzing the reaction in acidic and alkaline conditions.

Constructing oxygen vacancy-enriched Fe2O3@NiO heterojunctions for highly efficient electrocatalytic alkaline water splitting

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yan Sang ◽  
Xi Cao ◽  
Gaofei Ding ◽  
Zixuan Guo ◽  
Yingying Xue ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
High Purity ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Low Cost ◽  
Dual Function ◽  
Alkaline Water ◽  
High Purity Hydrogen

Electrolysis of water to produce high-purity hydrogen is a very promising method. The development of green, high-efficiency, long-lasting and low-cost dual function electrocatalysts for oxygen evolution reaction (OER) and hydrogen...

scholarly journals Atomic layer deposition triggered Fe-In-S cluster and gradient energy band in ZnInS photoanode for improved oxygen evolution reaction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Linxing Meng ◽  
Jinlu He ◽  
Xiaolong Zhou ◽  
Kaimo Deng ◽  
Weiwei Xu ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Energy Band ◽  
High Performance ◽  
Carrier Transport ◽  
Atomic Layer ◽  
Onset Potential ◽  
Layer Deposition ◽  
Gradient Energy

AbstractVast bulk recombination of photo-generated carriers and sluggish surface oxygen evolution reaction (OER) kinetics severely hinder the development of photoelectrochemical water splitting. Herein, through constructing a vertically ordered ZnInS nanosheet array with an interior gradient energy band as photoanode, the bulk recombination of photogenerated carriers decreases greatly. We use the atomic layer deposition technology to introduce Fe-In-S clusters into the surface of photoanode. First-principles calculations and comprehensive characterizations indicate that these clusters effectively lower the electrochemical reaction barrier on the photoanode surface and promote the surface OER reaction kinetics through precisely affecting the second and third steps (forming processes of O* and OOH*) of the four-electron reaction. As a result, the optimal photoanode exhibits the high performance with a significantly enhanced photocurrent of 5.35 mA cm−2 at 1.23 VRHE and onset potential of 0.09 VRHE. Present results demonstrate a robust platform for controllable surface modification, nanofabrication, and carrier transport.

CoC2O4·2H2O derived Co3O4 nanorods array: a high-efficiency 1D electrocatalyst for alkaline oxygen evolution reaction

2018 ◽  
Vol 54 (12) ◽  
pp. 1533-1536 ◽  
Author(s):  
Yicheng Wei ◽  
Xiang Ren ◽  
Hongmin Ma ◽  
Xu Sun ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Turnover Frequency ◽  
High Turnover ◽  
Nanorods Array ◽  
Co3o4 Nanorods ◽  
Catalyst Electrode

Self-standing Co3O4 nanorods array on Co foil as a 1D OER catalyst electrode, only needs overpotential of 308 mV to drive 15 mA cm−2 in 1.0 M KOH, with good long-term electrochemical durability and a high turnover frequency.

Low-cost high entropy alloy (HEA) for high-efficiency oxygen evolution reaction (OER)

Nano Research ◽  
2021 ◽  
Author(s):  
Lalita Sharma ◽  
Nirmal Kumar Katiyar ◽  
Arko Parui ◽  
Rakesh Das ◽  
Ritesh Kumar ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Low Cost ◽  
High Entropy Alloy ◽  
High Entropy

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...

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