scholarly journals Nanocrystalline NiWO4-WO3-WO2.9 Composite Strings: Fabrication, Characterization and their Electrocatalytic Performance for Hydrogen Evolution Reaction

2019 ◽  
Vol 51 (3) ◽  
pp. 1264-1274 ◽  
Author(s):  
Shaheen Fatima Anis ◽  
Ahmad O. Mostafa ◽  
Nidal Hilal ◽  
Raed Hashaikeh
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Performance

3D self-assembly of ultrafine molybdenum carbide confined in N-doped carbon nanosheets for efficient hydrogen production

Nanoscale ◽  
2017 ◽  
Vol 9 (41) ◽  
pp. 15895-15900 ◽  
Author(s):  
Haiqing Wang ◽  
Xiaobin Xu ◽  
Bing Ni ◽  
Haoyi Li ◽  
Wei Bian ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Self Assembly ◽  
Molybdenum Carbide ◽  
Carbon Nanosheets ◽  
Electrocatalytic Performance ◽  
Hierarchical Architectures

3D hierarchical architectures assembled from ultrafine MoC nanoparticles (0D) confined in N-doped conductive carbon nanosheets (2D) exhibit remarkable electrocatalytic performance and stability for the hydrogen evolution reaction (HER).

Electronic structural regulation of CoP nanorods by the tunable incorporation of oxygen for enhanced electrocatalytic activity during the hydrogen evolution reaction

Nanoscale ◽  
2020 ◽  
Vol 12 (27) ◽  
pp. 14733-14738 ◽  
Author(s):  
Yaru Ma ◽  
Guangyao Zhou ◽  
Zhenyuan Liu ◽  
Lin Xu ◽  
Dongmei Sun ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Conversion Method ◽  
Electrocatalytic Performance ◽  
Structural Regulation

We present a topological conversion method to prepare O-incorporated CoP (O-CoP) nanorods. Due to the 1D structure and incorporated O atoms, the O-CoP-3 nanorods exhibit superior electrocatalytic performance towards the HER.

scholarly journals Electrocatalytic Performance of Titania Nanotube Arrays Coated with MoS2 by ALD toward the Hydrogen Evolution Reaction

ACS Omega ◽  
2019 ◽  
Vol 4 (5) ◽  
pp. 8816-8823 ◽  
Author(s):  
Yuanyuan Cao ◽  
Yanlin Wu ◽  
Clémence Badie ◽  
Stéphane Cadot ◽  
Clément Camp ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanotube Arrays ◽  
Electrocatalytic Performance ◽  
Titania Nanotube Arrays ◽  
Titania Nanotube

Facile fabrication of Ir/CNT/rGO nanocomposites with enhanced electrocatalytic performance for the hydrogen evolution reaction

2020 ◽  
Vol 4 (7) ◽  
pp. 3288-3292
Author(s):  
Bo Huang ◽  
Yuntian Ma ◽  
Zhelun Xiong ◽  
Wangda Lu ◽  
Ran Ding ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Performance ◽  
Facile Fabrication ◽  
Long Lifetime ◽  
Low Overpotential

The facilely prepared Ir/CNT/rGO composite delivers low overpotential and long lifetime for the hydrogen evolution reaction.

Crystalline core–amorphous shell heterostructures: epitaxial assembly of NiB nanosheets onto PtPd mesoporous hollow nanopolyhedra for enhanced hydrogen evolution electrocatalysis

2020 ◽  
Vol 8 (18) ◽  
pp. 8927-8933 ◽  
Author(s):  
Kai Deng ◽  
Tianlun Ren ◽  
You Xu ◽  
Songliang Liu ◽  
Zechuan Dai ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Performance ◽  
Crystalline Core

Crystalline core–amorphous shell heterostructures composed of PtPd mesoporous hollow nanopolyhedra and NiB nanosheets exhibit enhanced electrocatalytic performance toward the hydrogen evolution reaction.

scholarly journals Electronic Structure and d-Band Center Control Engineering over Ni-Doped CoP3 Nanowall Arrays for Boosting Hydrogen Production

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1595
Author(s):  
Jing Qi ◽  
Tianli Wu ◽  
Mengyao Xu ◽  
Dan Zhou ◽  
Zhubing Xiao
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Three Dimensional ◽  
Carbon Cloth ◽  
Ni Doping ◽  
Band Center ◽  
Electrocatalytic Performance ◽  
Gaseous Transfer

To address the challenge of highly efficient water splitting into H2, successful fabrication of novel porous three-dimensional Ni-doped CoP3 nanowall arrays on carbon cloth was realized, resulting in an effective self-supported electrode for the electrocatalytic hydrogen-evolution reaction. The synthesized samples exhibit rough, curly, and porous structures, which are beneficial for gaseous transfer and diffusion during the electrocatalytic process. As expected, the obtained Ni-doped CoP3 nanowall arrays with a doping concentration of 7% exhibit the promoted electrocatalytic activity. The achieved overpotentials of 176 mV for the hydrogen-evolution reaction afford a current density of 100 mA cm−2, which indicates that electrocatalytic performance can be dramatically enhanced via Ni doping. The Ni-doped CoP3 electrocatalysts with increasing catalytic activity should have significant potential in the field of water splitting into H2. This study also opens an avenue for further enhancement of electrocatalytic performance through tuning of electronic structure and d-band center by doping.

scholarly journals Revealing the effect of electrocatalytic performance boost during hydrogen evolution reaction on free-standing SWCNT film electrode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Karolina Kordek-Khalil ◽  
Dawid Janas ◽  
Piotr Rutkowski
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Carbon Nanomaterials ◽  
Low Cost ◽  
High Surface ◽  
Water Electrolysis ◽  
Free Standing ◽  
Highly Active ◽  
Electrocatalytic Performance

AbstractLarge-scale sustainable hydrogen production by water electrolysis requires a highly active yet low-cost hydrogen evolution reaction (HER) electrocatalyst. Conductive carbon nanomaterials with high surface areas are promising candidates for this purpose. In this contribution, single-walled carbon nanotubes (SWCNTs) are assembled into free-standing films and directly used as HER electrodes. During the initial 20 h of electrocatalytic performance in galvanostatic conditions, the films undergo activation, which results in a gradual overpotential decrease to the value of 225 mV. Transient physicochemical properties of the films at various activation stages are characterized to reveal the material features responsible for the activity boost. Results indicate that partial oxidation of iron nanoparticles encapsulated in SWCNTs is the major contributor to the activity enhancement. Furthermore, besides high activity, the material, composed of only earth-abundant elements, possesses exceptional performance stability, with no activity loss for 200 h of galvanostatic performance at − 10 mA cm−2. In conclusion, the work presents the strategy of engineering a highly active HER electrode composed of widely available elements and provides new insights into the origins of electrocatalytic performance of SWCNT-based materials in alkaline HER.

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