Three-dimensional CoMoMg nanomesh based on the nanoscale Kirkendall effect for the efficient hydrogen evolution reaction

2021 ◽  
Vol 857 ◽  
pp. 158086
Author(s):  
Lixin Pei ◽  
Zhiguo Ye ◽  
Xuetao Yuan ◽  
Xinyuan Peng ◽  
Duosheng Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Three Dimensional ◽  
Kirkendall Effect

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.

Tailoring Unique Neural-Network-Type Carbon Nanofibers Inserted in CoP/NC Polyhedrons for Robust Hydrogen Evolution Reaction

Nanoscale ◽  
2021 ◽  
Author(s):  
Xiaoyan Wang ◽  
Wenxi Zhao ◽  
Yang Fei ◽  
Yanjuan Sun ◽  
Fan Dong
Keyword(s):  
Neural Network ◽  
Hydrogen Evolution ◽  
Carbon Nanofibers ◽  
Hydrogen Evolution Reaction ◽  
Performance Enhancement ◽  
Three Dimensional ◽  
And Performance ◽  
Structural Innovation ◽  
Network Type

Three-dimensional catalysts have attracted great attention in the field of hydrogen evolution reaction (HER). It still, however, remains a great challenge in structural innovation and performance enhancement. Herein, we designed...

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