Highly active two dimensional α-MoO3−x for the electrocatalytic hydrogen evolution reaction

2017 ◽  
Vol 5 (46) ◽  
pp. 24223-24231 ◽  
Author(s):  
R. S. Datta ◽  
F. Haque ◽  
M. Mohiuddin ◽  
B. J. Carey ◽  
N. Syed ◽  
...  
Keyword(s):  
High Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Clean Energy ◽  
Two Dimensional ◽  
Highly Active ◽  
Earth Abundant

The development of earth-abundant electrocatalysts for hydrogen evolution, with high activity and stability, is of great interest in the field of clean energy.

scholarly journals WS(1−x)Sex Nanoparticles Decorated Three-Dimensional Graphene on Nickel Foam: A Robust and Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 929 ◽  
Author(s):  
Sajjad Hussain ◽  
Kamran Akbar ◽  
Dhanasekaran Vikraman ◽  
Rana Afzal ◽  
Wooseok Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Nickel Foam ◽  
Transition Metal Dichalcogenides ◽  
Three Dimensional ◽  
Cost Effective ◽  
Highly Efficient ◽  
Highly Active ◽  
Earth Abundant

To find an effective alternative to scarce, high-cost noble platinum (Pt) electrocatalyst for hydrogen evolution reaction (HER), researchers are pursuing inexpensive and highly efficient materials as an electrocatalyst for large scale practical application. Layered transition metal dichalcogenides (TMDCs) are promising candidates for durable HER catalysts due to their cost-effective, highly active edges and Earth-abundant elements to replace Pt electrocatalysts. Herein, we design an active, stable earth-abundant TMDCs based catalyst, WS(1−x)Sex nanoparticles-decorated onto a 3D porous graphene/Ni foam. The WS(1−x)Sex/graphene/NF catalyst exhibits fast hydrogen evolution kinetics with a moderate overpotential of ~−93 mV to drive a current density of 10 mA cm−2, a small Tafel slope of ~51 mV dec−1, and a long cycling lifespan more than 20 h in 0.5 M sulfuric acid, which is much better than WS2/NF and WS2/graphene/NF catalysts. Our outcomes enabled a way to utilize the TMDCs decorated graphene and precious-metal-free electrocatalyst as mechanically robust and electrically conductive catalyst materials.

Two-dimensional TaC nanosheets on a reduced graphene oxide hybrid as an efficient and stable electrocatalyst for water splitting

2016 ◽  
Vol 52 (57) ◽  
pp. 8810-8813 ◽  
Author(s):  
Chunyong He ◽  
Juzhou Tao
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Two Dimensional ◽  
Highly Active ◽  
Reduced Graphene

A novel highly active and stable HER catalyst containing two-dimensional TaC nanosheets hybridized with reduced graphene oxide (2D TaC–RGO) was prepared as an efficient and stable hydrogen evolution reaction catalyst.

Polyoxometalate-encapsulated twenty-nuclear silver-tetrazole nanocage frameworks as highly active electrocatalysts for the hydrogen evolution reaction

2018 ◽  
Vol 54 (16) ◽  
pp. 1964-1967 ◽  
Author(s):  
Shaobin Li ◽  
Li Zhang ◽  
Yaqian Lan ◽  
Kevin P. O’Halloran ◽  
Huiyuan Ma ◽  
...  
Keyword(s):  
High Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Highly Active

Two unprecedented polyoxometalate (POM)-encapsulated twenty-nuclear silver-tetrazole nanocage frameworks have been successfully synthesized, which exhibit high activity in the hydrogen evolution reaction.

Highly active and durable non-precious-metal catalysts encapsulated in carbon nanotubes for hydrogen evolution reaction

2014 ◽  
Vol 7 (6) ◽  
pp. 1919-1923 ◽  
Author(s):  
Jiao Deng ◽  
Pengju Ren ◽  
Dehui Deng ◽  
Liang Yu ◽  
Fan Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Acidic Medium ◽  
Precious Metal ◽  
Metal Catalysts ◽  
Highly Active ◽  
Precious Metal Catalysts

Novel non-precious-metal catalysts encapsulated in N-doped carbon nanotubes exhibit high activity and remarkable stability towards hydrogen evolution reaction (HER) in acidic medium.

Hierarchical Cu2S hollow nanowire arrays for highly efficient hydrogen evolution reaction

2021 ◽  
Author(s):  
Ning Xie ◽  
Dong-Dong Ma ◽  
Yu-Lin Wu ◽  
Xintao Wu ◽  
Qi-Long Zhu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Nanowire Arrays ◽  
Highly Efficient ◽  
Highly Active ◽  
Earth Abundant

Exploiting the highly active and low-cost electrocatalysts based on earth-abundant elements for hydrogen evolution reaction (HER) is an extremely desired but challenging task. Herein, we present a facile and economical...

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.

Bimetallic Co2Mo3O8 suboxides coupled with conductive cobalt nanowires for efficient and durable hydrogen evolution in alkaline electrolyte

2018 ◽  
Vol 6 (12) ◽  
pp. 5217-5228 ◽  
Author(s):  
Yingqing Ou ◽  
Weiquan Tian ◽  
Lu Liu ◽  
Yunhuai Zhang ◽  
Peng Xiao
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Electrolyte ◽  
Highly Active ◽  
Cobalt Nanowires ◽  
Earth Abundant

Development of highly active and robust earth-abundant electrocatalysts for the hydrogen evolution reaction (HER) is of great significance for the broad utilization of alkaline electrolyzers.

scholarly journals Ordered clustering of single atomic Te vacancies in atomically thin PtTe2 promotes hydrogen evolution catalysis

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xinzhe Li ◽  
Yiyun Fang ◽  
Jun Wang ◽  
Hanyan Fang ◽  
Shibo Xi ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Thermal Treatment ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Catalytic Properties ◽  
Reactive Intermediates ◽  
Two Dimensional ◽  
Binding Strength ◽  
Highly Active

AbstractExposing and stabilizing undercoordinated platinum (Pt) sites and therefore optimizing their adsorption to reactive intermediates offers a desirable strategy to develop highly efficient Pt-based electrocatalysts. However, preparation of atomically controllable Pt-based model catalysts to understand the correlation between electronic structure, adsorption energy, and catalytic properties of atomic Pt sites is still challenging. Herein we report the atomically thin two-dimensional PtTe2 nanosheets with well-dispersed single atomic Te vacancies (Te-SAVs) and atomically well-defined undercoordinated Pt sites as a model electrocatalyst. A controlled thermal treatment drives the migration of the Te-SAVs to form thermodynamically stabilized, ordered Te-SAV clusters, which decreases both the density of states of undercoordinated Pt sites around the Fermi level and the interacting orbital volume of Pt sites. As a result, the binding strength of atomically defined Pt active sites to H intermediates is effectively reduced, which renders PtTe2 nanosheets highly active and stable in hydrogen evolution reaction.

Engineering Sulfur Vacancies into Fe9S10 Nanosheet Arrays for Efficient Alkaline Hydrogen Evolution

Nanoscale ◽  
2021 ◽  
Author(s):  
Wenjun He ◽  
Jianing Cheng ◽  
Yaohui Gao ◽  
Caichi Liu ◽  
Jianling Zhao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Metal Sulfides ◽  
Transition Metal Sulfides ◽  
Nanosheet Arrays ◽  
Excellent Activity ◽  
Earth Abundant ◽  
Iron Based

The development of earth-abundant transition metal sulfides electrocatalysts with excellent activity and stability toward alkaline hydrogen evolution reaction (HER) is critical but challenging. Iron-based sulfides are favored due to their...

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