One-dimensional hierarchical MoO2–MoSxhybrids as highly active and durable catalysts in the hydrogen evolution reaction

2018 ◽  
Vol 47 (17) ◽  
pp. 6041-6048 ◽  
Author(s):  
Yu Qiu ◽  
Liying Chai ◽  
Yi Su ◽  
Ping Li ◽  
Wenyu Yuan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hybrid Structures ◽  
Synthetic Method ◽  
One Dimensional ◽  
Highly Active ◽  
Cyclic Durability

A kind of 1D MoO2–MoSxhybrid structures was synthesizedviaa facilein-situsynthetic method. The obtained MoO2–MoSxcatalysts delivered high electrocatalytic activity and excellent cyclic durability in HER.

In Situ Evolution of Ru4Al13 Crystals into a Highly Active Catalyst for the Hydrogen Evolution Reaction

2021 ◽  
Vol 33 (17) ◽  
pp. 7124-7131
Author(s):  
Kriti Seth ◽  
Albert J. Darling ◽  
Cameron F. Holder ◽  
Yihuang Xiong ◽  
Jeffrey R. Shallenberger ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Catalyst ◽  
Highly Active

In-situ Derived Highly Active NiS2 and MoS2 Nanosheets on NiMoO4 Microcuboids via Controlled Surface Sulfidation for High-current-density Hydrogen Evolution Reaction

2021 ◽  
pp. 138733
Author(s):  
Shu Hearn Yu ◽  
Pranjal Kumar Gogoi ◽  
Ashutosh Rath ◽  
Haiwen Dai ◽  
Zhen Quan Cavin Ng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
High Current Density ◽  
High Current ◽  
Mos2 Nanosheets ◽  
Highly Active

In situ coupling of CoP with MoO2 for enhanced hydrogen evolution

2020 ◽  
Vol 8 (31) ◽  
pp. 16018-16023
Author(s):  
Jun Wang ◽  
Hui Cheng ◽  
Shiyu Ren ◽  
Lili Zhang ◽  
Liang-Xin Ding ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Highly Active

The development of highly active and stable catalysts based on low-cost materials for the hydrogen evolution reaction (HER) is crucial to catalytic water splitting.

scholarly journals Ni3Se4@MoSe2 Composites for Hydrogen Evolution Reaction

2019 ◽  
Vol 9 (23) ◽  
pp. 5035 ◽  
Author(s):  
Wenwu Guo ◽  
Quyet Van Le ◽  
Ha Huu Do ◽  
Amirhossein Hasani ◽  
Mahider Tekalgne ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Performance Improvement ◽  
Hydrogen Evolution Reaction ◽  
High Surface ◽  
High Surface Area ◽  
Transition Metal Dichalcogenides ◽  
Accelerate Electron ◽  
Highly Active ◽  
Metal Dichalcogenides

Transition metal dichalcogenides (TMDs) have been considered as one of the most promising electrocatalysts for the hydrogen evolution reaction (HER). Many studies have demonstrated the feasibility of significant HER performance improvement of TMDs by constructing composite materials with Ni-based compounds. In this work, we prepared Ni3Se4@MoSe2 composites as electrocatalysts for the HER by growing in situ MoSe2 on the surface of Ni3Se4 nanosheets. Electrochemical measurements revealed that Ni3Se4@MoSe2 nanohybrids are highly active and durable during the HER process, which exhibits a low onset overpotential (145 mV) and Tafel slope (65 mV/dec), resulting in enhanced HER performance compared to pristine MoSe2 nanosheets. The enhanced HER catalytic activity is ascribed to the high surface area of Ni3Se4 nanosheets, which can both efficiently prevent the agglomeration issue of MoSe2 nanosheets and create more catalytic edge sites, hence accelerate electron transfer between MoSe2 and the working electrode in the HER. This approach provides an effective pathway for catalytic enhancement of MoSe2 electrocatalysts and can be applied for other TMD electrocatalysts.

Molybdenum disulfide and Au ultrasmall nanohybrids as highly active electrocatalysts for hydrogen evolution reaction

2017 ◽  
Vol 5 (8) ◽  
pp. 4122-4128 ◽  
Author(s):  
Jinxuan Zhang ◽  
Tanyuan Wang ◽  
Lu Liu ◽  
Kuangzhou Du ◽  
Wanglian Liu ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Solvothermal Method ◽  
Gold Nanoclusters ◽  
Highly Active

MoS2–Au nanohybrids prepared from MoS2 nanoparticles with gold nanoclusters by a solvothermal method showed outstanding electrocatalytic activity toward HER.

Metal-free B-doped graphene with efficient electrocatalytic activity for hydrogen evolution reaction

2014 ◽  
Vol 4 (7) ◽  
pp. 2023-2030 ◽  
Author(s):  
Bhaskar R. Sathe ◽  
Xiaoxin Zou ◽  
Tewodros Asefa
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Synthetic Method ◽  
Metal Free ◽  
Doped Graphene

We report a facile and inexpensive wet synthetic method to electrocatalytically active, B-substituted graphene (B-SuG) by controlled substitution of the C atoms of graphene with B atoms using BH3-THF. The resulting material is shown to serve as an efficient metal-free electrocatalyst for hydrogen evolution reaction (HER).

scholarly journals In Situ Wet Etching of MoS2@dWO3 Heterostructure as Ultra-Stable Highly Active Electrocatalyst for Hydrogen Evolution Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 977
Author(s):  
Xintian Liu ◽  
Congwei Wang
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Vacancies ◽  
Rapid Development ◽  
Strong Stability ◽  
Wet Etching ◽  
Two Dimensional ◽  
Highly Active ◽  
Anisotropic Substrate

Electrocatalysts featuring robust structure, excellent catalytic activity and strong stability are highly desirable, but challenging. The rapid development of two-dimensional transition metal chalcogenide (such as WO3, MoS2 and WS2) nanostructures offers a hopeful strategy to increase the active edge sites and expedite the efficiency of electronic transport for hydrogen evolution reaction. Herein, we report a distinctive strategy to construct two-dimensional MoS2@dWO3 heterostructure nanosheets by in situ wet etching. Synthesized oxygen-incorporated MoS2-was loaded on the surface of defective WO3 square nanoframes with abundant oxygen vacancies. The resulting nanocomposite exhibits a low overpotential of 191 mV at 10 mA cm−2 and a very low Tafel slope of 42 mV dec−1 toward hydrogen evolution reaction. The long-term cyclic voltammetry cycling of 5000 cycles and more than 80,000 s chronoamperometry tests promises its outstanding stability. The intimate and large interfacial contact between MoS2 and WO3, favoring the charge transfer and electron–hole separation by the synergy of defective WO3 and oxygen-incorporated MoS2, is believed the decisive factor for improving the electrocatalytic efficiency of the nanocomposite. Moreover, the defective WO3 nanoframes with plentiful oxygen vacancies could serve as an anisotropic substrate to promote charge transport and oxygen incorporation into the interface of MoS2. This work provides a unique methodology for designing and constructing excellently heterostructure electrocatalysts for hydrogen evolution reaction.

Cost effective Mo rich Mo2C electrocatalysts for the hydrogen evolution reaction

2018 ◽  
Vol 6 (21) ◽  
pp. 10028-10035 ◽  
Author(s):  
Jie Dong ◽  
Qiang Wu ◽  
Cunping Huang ◽  
Weifeng Yao ◽  
Qunjie Xu
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Hydrogen Evolution Reaction ◽  
Water Electrolysis ◽  
Cost Effective ◽  
Synthetic Method ◽  
Highly Active

Mo rich Mo2C synthesized via a facile two-step synthetic method is potentially a highly active non-noble metal electrocatalyst for hydrogen production via water electrolysis.

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