A three-dimensional and porous bi-nanospheres electrocatalytic system constructed by in situ generation of Ru nanoclusters inside and outside polydopamine nanoparticles for highly efficient hydrogen evolution reaction

2020 ◽  
Vol 45 (11) ◽  
pp. 6592-6603 ◽  
Author(s):  
Jintao Cai ◽  
Tao Chen ◽  
Liang Cui ◽  
Qiang Jia ◽  
Maosheng Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Three Dimensional ◽  
Highly Efficient ◽  
In Situ Generation

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.

Alloy-Strain-Output Induced Lattice Dislocation in Ni3FeN/Ni3Fe Ultrathin Nanosheets for Highly Efficient Overall Water Splitting

2021 ◽  
Author(s):  
Zijian Li ◽  
Haeseong Jang ◽  
Danni Qin ◽  
Xiaoli Jiang ◽  
Xuqiang Ji ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Microstructure Evolution ◽  
Low Cost ◽  
Lattice Dislocation ◽  
Ultrathin Nanosheets ◽  
Highly Efficient ◽  
Partial Lattice

Designing highly efficient, stable and low-cost bifunctional electrocatalysts based on in-situ microstructure evolution, especially achieving partial lattice dislocation on highly crystalline texture, to catalyze hydrogen evolution reaction (HER) and oxygen...

Kinetics of the hydrogen evolution reaction on a highly porous three-dimensional Ni catalyst in the presence of a Mo ion activator in alkaline solution

2017 ◽  
Vol 41 (9) ◽  
pp. 3344-3351 ◽  
Author(s):  
Ali Reza Madram ◽  
Samane Asadi
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Solution ◽  
Three Dimensional ◽  
Electrochemical Methods ◽  
Ni Catalyst ◽  
Kinetics Of ◽  
Highly Porous

In situ activated 3D-Ni by Mo ions in alkaline solution studied by various electrochemical methods for the hydrogen evolution reaction (HER).

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