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 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.

Rhombic porous CoP2 nanowire arrays synthesized by alkaline etching as highly active hydrogen-evolution-reaction electrocatalysts

2018 ◽  
Vol 6 (39) ◽  
pp. 19038-19046 ◽  
Author(s):  
Yi Zhou ◽  
Yuying Yang ◽  
Ruijing Wang ◽  
Xiaotong Wang ◽  
Xinyuan Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanowire Arrays ◽  
Alkaline Media ◽  
Carbon Cloth ◽  
Active Hydrogen ◽  
Alkaline Etching ◽  
Highly Active

Rhombic arrays of porous CoP2 nanowires on carbon cloth for an efficient hydrogen evolution reaction in both acid and alkaline media.

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.

Low‐Cost Porous Ruthenium Layer Deposited on Nickel Foam as a Highly Active Universal‐pH Electrocatalyst for the Hydrogen Evolution Reaction

ChemSusChem ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2780-2787 ◽  
Author(s):  
Jiawei Xia ◽  
Michael Volokh ◽  
Guiming Peng ◽  
Yongsheng Fu ◽  
Xin Wang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nickel Foam ◽  
Low Cost ◽  
Highly Active

scholarly journals Silicon nanowire arrays coupled with cobalt phosphide spheres as low-cost photocathodes for efficient solar hydrogen evolution

2015 ◽  
Vol 51 (53) ◽  
pp. 10742-10745 ◽  
Author(s):  
Xiao-Qing Bao ◽  
M. Fatima Cerqueira ◽  
Pedro Alpuim ◽  
Lifeng Liu
Keyword(s):  
Hydrogen Evolution ◽  
Low Cost ◽  
Silicon Nanowire ◽  
Hollow Spheres ◽  
Nanowire Arrays ◽  
Photoelectrochemical Performance ◽  
Solar Hydrogen ◽  
Cobalt Phosphide ◽  
Silicon Nanowire Arrays ◽  
Earth Abundant

Low-cost photocathodes consisting of silicon nanowire arrays coupled with hollow spheres of the emerging earth-abundant cobalt phosphide catalysts are fabricated, which exhibit good photoelectrochemical performance toward the solar-driven H2 evolution.

Well-dispersed ultrasmall VC nanoparticles embedded in N-doped carbon nanotubes as highly efficient electrocatalysts for hydrogen evolution reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14272-14279 ◽  
Author(s):  
Liyun Cao ◽  
Ning Zhang ◽  
Liangliang Feng ◽  
Jianfeng Huang ◽  
Yongqiang Feng ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Catalytic Properties ◽  
Design And Synthesis ◽  
Highly Efficient ◽  
Earth Abundant

The rational design and synthesis of ultrasmall metal-based electrocatalysts using earth-abundant elements are considered as a promising route to improve catalytic properties.

Molybdenum diboride nanoparticles as a highly efficient electrocatalyst for the hydrogen evolution reaction

2017 ◽  
Vol 1 (9) ◽  
pp. 1928-1934 ◽  
Author(s):  
Palani R. Jothi ◽  
Yuemei Zhang ◽  
Jan P. Scheifers ◽  
Hyounmyung Park ◽  
Boniface P. T. Fokwa
Keyword(s):  
Hydrogen Evolution ◽  
Noble Metal ◽  
Hydrogen Evolution Reaction ◽  
Theoretical Studies ◽  
Highly Efficient ◽  
Highly Active ◽  
Molybdenum Sulfides ◽  
Molybdenum Boride ◽  
Metal Nanomaterials ◽  
Experimental And Theoretical Studies

Non-noble metal nanomaterials (molybdenum sulfides, phosphides, carbides, and nitrides) have recently emerged as highly active electrocatalysts for the hydrogen evolution reaction (HER). Here we present experimental and theoretical studies of the first highly active molybdenum boride nanomaterial for the HER.

Construction of self-supporting Ni2P-WO3 heterostructure for highly efficient hydrogen evolution under both caustic and acidic conditions

2021 ◽  
Author(s):  
Benzhi Wang ◽  
Lixia Wang ◽  
Yongteng Qian ◽  
Yuting Yang ◽  
Tayirjan Taylor Isimjan ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Low Cost ◽  
Sustainable Energy ◽  
Significant Challenge ◽  
Highly Efficient ◽  
Construction Of Self ◽  
Energy Conversion Systems ◽  
Acidic Conditions

The development of low-cost and highly efficient hydrogen evolution reaction (HER) catalysts remains a significant challenge for the advancement of sustainable energy conversion systems. Herein, we have reported the successful...

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...

Sign in / Sign up

Export Citation Format

Share Document