scholarly journals A Molecular Tetrahedral Cobalt–Seleno-Based Complex as an Efficient Electrocatalyst for Water Splitting

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 945
Author(s):  
Ibrahim Munkaila Abdullahi ◽  
Jahangir Masud ◽  
Polydoros-Chrisovalantis Ioannou ◽  
Eleftherios Ferentinos ◽  
Panayotis Kyritsis ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
High Mass ◽  
Alkaline Solutions ◽  
Hydrogen Evolution Reactions ◽  
Mass Activity ◽  
Turn Over Frequency ◽  
Turn Over

The cobalt–seleno-based coordination complex, [Co{(SePiPr2)2N}2], is reported with respect to its catalytic activity in oxygen evolution and hydrogen evolution reactions (OER and HER, respectively) in alkaline solutions. An overpotential of 320 and 630 mV was required to achieve 10 mA cm−2 for OER and HER, respectively. The overpotential for OER of this CoSe4-containing complex is one of the lowest that has been observed until now for molecular cobalt(II) systems, under the reported conditions. In addition, this cobalt–seleno-based complex exhibits a high mass activity (14.15 A g−1) and a much higher turn-over frequency (TOF) value (0.032 s−1) at an overpotential of 300 mV. These observations confirm analogous ones already reported in the literature pertaining to the potential of molecular cobalt–seleno systems as efficient OER electrocatalysts.

Efficient water splitting catalyzed by flexible NiP2 nanosheet array electrodes under both neutral and alkaline solutions

2017 ◽  
Vol 41 (5) ◽  
pp. 2154-2159 ◽  
Author(s):  
Zonghua Pu ◽  
Ya Xue ◽  
Wenqiang Li ◽  
Ibrahim Saana Amiinu ◽  
Shichun Mu
Keyword(s):  
High Activity ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Alkaline Solutions ◽  
Nanosheet Array ◽  
Hydrogen Evolution Reactions

NiP2/CC exhibits high activity and stability under both neutral and alkaline solutions towards both oxygen and hydrogen evolution reactions.

Ru single atoms and nanoclusters on highly porous N–doped carbon as hydrogen evolution catalyst in alkaline solutions with ultrahigh mass activity and turnover frequency

2021 ◽  
Author(s):  
Yijun Li ◽  
Huijing Liu ◽  
Bing Li ◽  
Zhenzhen Yang ◽  
Zhenguo Guo ◽  
...  
Keyword(s):  
Energy Source ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Active Sites ◽  
Sustainable Energy ◽  
Alkaline Solutions ◽  
Turnover Frequency ◽  
Single Atoms ◽  
Mass Activity ◽  
Highly Porous

Electrocatalytic water splitting is one of the most desirable ways to provide hydrogen which is a clean and sustainable energy source. Improving the formation and the exposure of active sites...

Hierarchical Ni/NiTiO3 derived from NiTi LDHs: a bifunctional electrocatalyst for overall water splitting

2017 ◽  
Vol 5 (47) ◽  
pp. 24767-24774 ◽  
Author(s):  
Chenlong Dong ◽  
Xiangye Liu ◽  
Xin Wang ◽  
Xiaotao Yuan ◽  
Ziwan Xu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Catalytic Performance ◽  
Alkaline Solutions ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting

Ni/NiTiO3 manifests remarkable catalytic performance for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) in alkaline solutions.

scholarly journals Co/CoO nanoparticles immobilized on Co–N-doped carbon as trifunctional electrocatalysts for oxygen reduction, oxygen evolution and hydrogen evolution reactions

2016 ◽  
Vol 52 (35) ◽  
pp. 5946-5949 ◽  
Author(s):  
Xian Zhang ◽  
Rongrong Liu ◽  
Yipeng Zang ◽  
Guoqiang Liu ◽  
Guozhong Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Carbon Nanodots ◽  
Shrimp Shell ◽  
Hydrogen Evolution Reactions ◽  
Coo Nanoparticles

A Co/CoO@Co–N–C composite was fabricated using shrimp-shell derived N-doped carbon nanodots as precursor, exhibiting superior trifunctional ORR/OER/HER catalytic activity.

scholarly journals A structurally versatile nickel phosphite acting as a robust bifunctional electrocatalyst for overall water splitting

2018 ◽  
Vol 11 (5) ◽  
pp. 1287-1298 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Chakadola Panda ◽  
Stefan Loos ◽  
Florian Bunschei-Bruns ◽  
Carsten Walter ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting

The mechanistically distinct and synergistic role of phosphite anions in hydrogen evolution and nickel cations in oxygen evolution have been uncovered for active and durable overall water splitting catalysis in nickel phosphite.

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...

Facile synthesis of cubical Co3O4 supported Au nanocomposites with high activity for the reduction of 4-nitrophenol to 4-aminophenol

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32430-32433 ◽  
Author(s):  
Yuwen Yang ◽  
Yongyun Mao ◽  
Bin Wang ◽  
Xianwei Meng ◽  
Jiao Han ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Impregnation Method ◽  
Facile Synthesis ◽  
Turn Over Frequency ◽  
Turn Over

A facile impregnation method has been successfully applied for synthesis of a cubical Co3O4 supported Au nanocomposites, which leads to the excellent catalytic activity for the reduction of 4-nitrophenol with a high turn over frequency of 9.83 min−1.

First-Principles Investigation of Two-Dimensional Covalent Organic Frameworks Electrocatalysts for Oxygen Evolution/Reduction and Hydrogen Evolution Reactions

2021 ◽  
Author(s):  
Jing Ji ◽  
Cunjin Zhang ◽  
Shuaibo Qin ◽  
Peng Jin
Keyword(s):  
Renewable Energy ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
First Principles ◽  
Oxygen Evolution Reaction ◽  
Reduction Reaction ◽  
Two Dimensional ◽  
Energy Applications ◽  
Hydrogen Evolution Reactions

The oxygen evolution reaction (OER), oxygen reduction reaction (ORR), and hydrogen evolution reaction (HER) all have attracted much attention due to their utmost importance for clean and renewable energy applications....

scholarly journals MoS2/Ni3S2 nanorod arrays well-aligned on Ni foam: a 3D hierarchical efficient bifunctional catalytic electrode for overall water splitting

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46286-46296 ◽  
Author(s):  
Nan Zhang ◽  
Junyu Lei ◽  
Jianpeng Xie ◽  
Haiyan Huang ◽  
Ying Yu
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Nanorod Arrays ◽  
Ni Foam ◽  
Overall Water Splitting

A novel 3D hierarchical bifunctional catalytic electrode, MoS2/Ni3S2 nanorod arrays well-aligned on NF exhibited excellent electrocatalytic efficiency for hydrogen evolution reaction, oxygen evolution reaction and overall water splitting.

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