Intrinsic Activity of Some Oxygen and Hydrogen Evolution Reaction Electrocatalysts under Industrially Relevant Conditions

2018 ◽  
Vol 1 (8) ◽  
pp. 4196-4202 ◽  
Author(s):  
Sebastian Watzele ◽  
Yunchang Liang ◽  
Aliaksandr S. Bandarenka
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Intrinsic Activity

Fabrication and Characterization of Amorphous Cobalt-Doped Molybdenum Sulfide for Hydrogen Evolution Reaction

2015 ◽  
Vol 15 (10) ◽  
pp. 8257-8262 ◽  
Author(s):  
Dongwook Lim ◽  
Hyein Hwang ◽  
Taewoo Kim ◽  
Sang Eun Shim ◽  
Sung-Hyeon Baeck
Keyword(s):  
Electron Microscopy ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photoelectron Spectroscopy ◽  
Water Electrolysis ◽  
Molybdenum Sulfide ◽  
Intrinsic Activity ◽  
Metal Catalyst ◽  
Alkaline Water Electrolysis ◽  
Catalytic Hydrogen Evolution

In the present study, hydrogen evolution reaction (HER) by alkaline water electrolysis was conducted without using a precious metal catalyst. We synthesized an amorphous cobalt-doped molybdenum sulfide by electrodeposition using different cobalt loadings. The amorphous Co-MoSx produced was characterized by scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The cobalt doping and sulfidation procedure resulted in the successful fabrication of a candidate catalyst for the catalytic hydrogen evolution in alkaline solution with high intrinsic activity. Cobalt incorporated amorphous MoSx exhibited 3 times higher HER activity than non-promoted MoSx.

Seamlessly conductive Co(OH)2 tailored atomically dispersed Pt electrocatalyst with a hierarchical nanostructure for an efficient hydrogen evolution reaction

2020 ◽  
Vol 13 (9) ◽  
pp. 3082-3092 ◽  
Author(s):  
Kai Ling Zhou ◽  
Changhao Wang ◽  
Zelin Wang ◽  
Chang Bao Han ◽  
Qianqian Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Single Atom ◽  
Intrinsic Activity ◽  
Hybrid Catalyst ◽  
Hierarchical Nanostructure ◽  
Nanowire Network ◽  
Ag Nanowire

A hybrid catalyst based on single-atom Pt anchored Co(OH)2 nanosheets growing on a Ag nanowire network with high intrinsic activity is developed for an efficient hydrogen evolution reaction.

scholarly journals Recent Modification Strategies of MoS2 for Enhanced Electrocatalytic Hydrogen Evolution

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1136
Author(s):  
Chao Meng ◽  
Xiaodong Chen ◽  
Yuanfeng Gao ◽  
Qianqian Zhao ◽  
Deqiang Kong ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Recent Progress ◽  
Elemental Abundance ◽  
Intrinsic Activity ◽  
Catalytic Potential ◽  
Recent Modification ◽  
Mos2 Catalysts

Molybdenum disulfide (MoS2) has been recognized as one of the most promising catalysts to replace Pt for hydrogen evolution reaction (HER) electrocatalysis because of the elemental abundance, excellent catalytic potential, and stability. However, its HER efficiency is still below that of Pt. Recent research advances have revealed that the modification of pristine MoS2 is a very effective approach to boost its HER performance, including improving the intrinsic activity of sites, increasing the number of edges, and enhancing the electrical conductivity. In this review, we focus on the recent progress on the modification strategies of MoS2 for enhanced electrocatalytic hydrogen evolution. Moreover, some urgent challenges in this field are also discussed to realize the large-scale application of the modified-MoS2 catalysts in industry.

Electrochemical hydrogen evolution reaction efficiently catalyzed by Ru-N coupling in defect-rich Ru/g-C3N4 nanosheets

2021 ◽  
Author(s):  
Dongze Li ◽  
Yang Liu ◽  
Zong Liu ◽  
Jun Yang ◽  
Chaoquan Hu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Hydrogen Generation ◽  
Intrinsic Activity ◽  
Practical Application

The low intrinsic activity of Ru seriously restricts its practical application in hydrogen generation (HER) via sustainable water splitting. Herein, we reported robust and reliable catalysts of defect-rich Ru/g-C3N4 nanosheets...

A Co–Mo2N composite on a nitrogen-doped carbon matrix with hydrogen evolution activity comparable to that of Pt/C in alkaline media

2019 ◽  
Vol 7 (36) ◽  
pp. 20579-20583 ◽  
Author(s):  
Xuewei Lang ◽  
Muhammad Abdul Qadeer ◽  
Guoqiang Shen ◽  
Rongrong Zhang ◽  
Sichao Yang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Carbon Matrix ◽  
Alkaline Media ◽  
Intrinsic Activity ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

Co–Mo2N@NC exhibits comparable hydrogen evolution reaction activity with that of Pt/C because of the improvement of intrinsic activity and electrical conductivity.

A CoMoO4–Co2Mo3O8 heterostructure with valence-rich molybdenum for a high-performance hydrogen evolution reaction in alkaline solution

2019 ◽  
Vol 7 (28) ◽  
pp. 16761-16769 ◽  
Author(s):  
Zheng Liu ◽  
Changhong Zhan ◽  
Linkai Peng ◽  
Yang Cao ◽  
Yong Chen ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Solution ◽  
High Performance ◽  
Hydrogen Reduction ◽  
Intrinsic Activity ◽  
Step Method ◽  
Hierarchical Nanostructures ◽  
Reduction Treatment

The heterostructure CoMoO4–Co2Mo3O8 was prepared by a two-step method, including hydrothermal synthesis of CoMoO4 nanowire and subsequent hydrogen reduction treatment of CoMoO4. Due to hierarchical nanostructures of CoMoO4–Co2Mo3O8 facilitated intrinsic activity and conductivity, the outstanding performance for HER, surpassing most cobalt–molybdenum bimetal oxide.

A crystalline–amorphous Ni–Ni(OH)2 core–shell catalyst for the alkaline hydrogen evolution reaction

2020 ◽  
Vol 8 (44) ◽  
pp. 23323-23329
Author(s):  
Jing Hu ◽  
Siwei Li ◽  
Yuzhi Li ◽  
Jing Wang ◽  
Yunchen Du ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Core Shell ◽  
Alkaline Conditions

Crystalline–amorphous Ni–Ni(OH)2 core–shell assembled nanosheets exhibit outstanding electrocatalytic activity and stability for hydrogen evolution under alkaline conditions.

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