Strong hydrophilicity NiS2/Fe7S8 heterojunctions encapsulated in N-doped carbon nanotubes for enhanced oxygen evolution reaction

2020 ◽  
Vol 56 (10) ◽  
pp. 1489-1492 ◽  
Author(s):  
Jing-Yu Wang ◽  
Wen-Ting Liu ◽  
Xiao-Peng Li ◽  
Ting Ouyang ◽  
Zhao-Qing Liu
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites ◽  
Oxidation Activity

The construction of active sites with excellent water oxidation activity is of great significance in the design of OER electrocatalysts.

Oriental and robust anchoring of Fe via anodic interfacial coordination assembly on ultrathin Co hydroxides for efficient water oxidation

Nanoscale ◽  
2021 ◽  
Author(s):  
Ya-Nan Zhou ◽  
Ruo-Yao Fan ◽  
Yu-Ning Cao ◽  
Hui-Ying Wang ◽  
Bin Dong ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites

The oriental distribution and strong conjunction of Fe active sites in multiple metals hydroxides are very crucial to modulate the activity and stability for efficient oxygen evolution reaction (OER). Whereas,...

One-step synthesis of multi-walled carbon nanotubes/ultra-thin Ni(OH)2 nanoplate composite as efficient catalysts for water oxidation

2014 ◽  
Vol 2 (30) ◽  
pp. 11799-11806 ◽  
Author(s):  
Xuemei Zhou ◽  
Zhaoming Xia ◽  
Zhiyun Zhang ◽  
Yuanyuan Ma ◽  
Yongquan Qu
Keyword(s):  
Carbon Nanotubes ◽  
Hydrothermal Synthesis ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Highly Efficient ◽  
Multi Walled Carbon Nanotubes ◽  
One Step ◽  
Walled Carbon Nanotubes

One-step hydrothermal synthesis of ultra-thin β-Ni(OH)2 nanoplates (1.5–3.0 nm thickness) and their composite with multi-walled carbon nanotubes in the absence of surfactants function as highly efficient and stable electrocatalysts for oxygen evolution reaction.

Capturing the active sites of multimetallic (oxy)hydroxides for the oxygen evolution reaction

2020 ◽  
Vol 13 (11) ◽  
pp. 4225-4237
Author(s):  
Xin Bo ◽  
Rosalie K Hocking ◽  
Si Zhou ◽  
Yibing Li ◽  
Xianjue Chen ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites ◽  
Alkaline Water ◽  
Catalytic Active Sites

The catalytic active sites of NiFe and NiFeCr (oxy)hydroxides are revealed by operando spectroscopic techonologies for alkaline water oxidation.

scholarly journals Engineering Ternary Copper-Cobalt Sulfide Nanosheets as High-performance Electrocatalysts toward Oxygen Evolution Reaction

Catalysts ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 459 ◽  
Author(s):  
Heng Luo ◽  
Hang Lei ◽  
Yufei Yuan ◽  
Yongyin Liang ◽  
Yi Qiu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites ◽  
High Performance ◽  
Rational Design ◽  
Renewable Energy Sources ◽  
Cobalt Sulfide ◽  
Carbon Cloth

The rational design and development of the low-cost and effective electrocatalysts toward oxygen evolution reaction (OER) are essential in the storage and conversion of clean and renewable energy sources. Herein, a ternary copper-cobalt sulfide nanosheets electrocatalysts (denoted as CuCoS/CC) for electrochemical water oxidation has been synthesized on carbon cloth (CC) via the sulfuration of CuCo-based precursors. The obtained CuCoS/CC reveals excellent electrocatalytic performance toward OER in 1.0 M KOH. It exhibits a particularly low overpotential of 276 mV at current density of 10 mA cm−2, and a small Tafel slope (58 mV decade−1), which is superior to the current commercialized noble-metal electrocatalysts, such as IrO2. Benefiting from the synergistic effect of Cu and Co atoms and sulfidation, electrons transport and ions diffusion are significantly enhanced with the increase of active sites, thus the kinetic process of OER reaction is boosted. Our studies will serve as guidelines in the innovative design of non-noble metal electrocatalysts and their application in electrochemical water splitting

Remarkable enhancement of the alkaline oxygen evolution reaction activity of NiCo2O4 by an amorphous borate shell

2017 ◽  
Vol 4 (9) ◽  
pp. 1546-1550 ◽  
Author(s):  
Xuqiang Ji ◽  
Xiang Ren ◽  
Shuai Hao ◽  
Fengyu Xie ◽  
Fengli Qu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxidation Activity ◽  
Alkaline Conditions

Surface introduction of an amorphous borate shell on NiCo2O4 greatly boosts its electrochemical water oxidation activity under alkaline conditions. To achieve 10 mA cm−2 in 1.0 M KOH, NiCo2O4@Ni–Co–B/CC needs an overpotential of only 270 mV.

scholarly journals Carbon dots with tunable concentrations of trapped anti-oxidant as an efficient metal-free catalyst for electrochemical water oxidation

2016 ◽  
Vol 4 (38) ◽  
pp. 14614-14624 ◽  
Author(s):  
Abheek Datta ◽  
Sutanu Kapri ◽  
Sayan Bhattacharyya
Keyword(s):  
Oxygen Evolution ◽  
Alkaline Medium ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Carbon Dots ◽  
Active Sites ◽  
Metal Free ◽  
Anti Oxidant

Carbon dots, containing keto-groups as active sites and the highest abundance of an anti-oxidant, 5-hydroxymethyl-2-furaldehyde, efficiently catalyse oxygen evolution reaction in alkaline medium and generate 10 mA cm−2at 0.21 V overpotential..

Emerging linear activity trend in the oxygen evolution reaction with dual-active-sites mechanism

2020 ◽  
Vol 8 (40) ◽  
pp. 20946-20952
Author(s):  
Li Yang ◽  
Yuxuan Wu ◽  
Fan Wu ◽  
Yuan Zhao ◽  
Zhiwen Zhuo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
The Ideal

A concisely linear OER activity trend associated with a new descriptor was obtained by the design of dual-active-sites catalysis in carbon nanotubes, providing a facile approach to reach the ideal value.

A hierarchical CoTe2–MnTe2 hybrid nanowire array enables high activity for oxygen evolution reactions

2018 ◽  
Vol 54 (78) ◽  
pp. 10993-10996 ◽  
Author(s):  
Ziqiang Wang ◽  
Xiang Ren ◽  
Liang Wang ◽  
Guanwei Cui ◽  
Hongjing Wang ◽  
...  
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Active Sites ◽  
Nanowire Array ◽  
Alkaline Media ◽  
Oxidation Activity

A hierarchical CoTe2–MnTe2 hybrid nanowire array exhibits enhanced water oxidation activity in alkaline media due to its excellent conductivity and rich active sites.

Enhanced oxygen evolution reaction of metallic nickel phosphide nanosheets by surface modification

2016 ◽  
Vol 3 (8) ◽  
pp. 1021-1027 ◽  
Author(s):  
Zejun Li ◽  
Xinyu Dou ◽  
Yingcheng Zhao ◽  
Changzheng Wu
Keyword(s):  
Surface Modification ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Metallic Nickel ◽  
Nickel Phosphide ◽  
Oxidation Activity

A facile surface modification strategy on metallic Ni2P nanosheets electrocatalyst greatly enhances water oxidation activity.

Controllable growth of graphdiyne layered nanosheets for high-performance water oxidation

2021 ◽  
Author(s):  
Shuya Zhao ◽  
Yurui Xue ◽  
Zhongqiang Wang ◽  
Zhiqiang Zheng ◽  
Xiaoyu Luan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Low Cost ◽  
Highly Active ◽  
Controllable Growth

Developing highly active, stable and low-cost electrocatalysts capable of an efficient oxygen evolution reaction (OER) is urgent and challenging.

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