Cobalt diselenide nanobelts grafted on carbon fiber felt: an efficient and robust 3D cathode for hydrogen production
Reads0
Chats0
TLDR
In this paper, a 3D hydrogen evolution cathode constructed by in situ growing of cobalt diselenide nanobelts on the surface of commercial carbon fiber felt shows exceptionally high catalytic activity with 141 mV overpotential to afford a current density of 10 mA cm−2, and a high exchange currentdensity of 5.9 × 10−2 mAcm−2.Abstract:
Design and fabrication of low-cost, highly efficient and robust three-dimensional (3D) hierarchical structure materials for electrochemical reduction of water to make molecular hydrogen is of paramount importance for real water splitting applications. Herein, a 3D hydrogen evolution cathode constructed by in situ growing of cobalt diselenide nanobelts on the surface of commercial carbon fiber felt shows exceptionally high catalytic activity with 141 mV overpotential to afford a current density of 10 mA cm−2, and a high exchange current density of 5.9 × 10−2 mA cm−2. Remarkably, it also exhibits excellent catalytic stability, and could be used for more than 30 000 potential cycles with no decrease in the current density in 0.5 M H2SO4. This easily prepared 3D material with excellent electrocatalytic performance is promising as a realistic hydrogen evolution electrode.read more
Citations
More filters
Journal ArticleDOI
Vertically oriented cobalt selenide/NiFe layered-double-hydroxide nanosheets supported on exfoliated graphene foil: an efficient 3D electrode for overall water splitting
TL;DR: In this article, a ternary hybrid was constructed by in situ growth of cobalt selenide (Co0.85Se) nanosheets vertically oriented on electrochemically exfoliated graphene foil, with subsequent deposition of NiFe layered-double-hydroxide by a hydrothermal treatment.
Journal ArticleDOI
Simultaneous H2 Generation and Biomass Upgrading in Water by an Efficient Noble-Metal-Free Bifunctional Electrocatalyst
TL;DR: An efficient strategy to replace OER with a thermodynamically more favorable reaction, the oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), catalyzed by 3D Ni2 P nanoparticle arrays on nickel foam (Ni2 P NPA/NF).
Journal ArticleDOI
Carbon-Based Electrocatalysts for Hydrogen and Oxygen Evolution Reactions
TL;DR: In this article, the development of carbon-based electrocatalysts for hydrogen and oxygen evolution reactions (HER and OER) is discussed, as well as their challenges and opportunities.
Journal ArticleDOI
A one-dimensional porous carbon-supported Ni/Mo2C dual catalyst for efficient water splitting
TL;DR: A new porous carbon-supported Ni/Mo2C composite exhibits high activity towards both the hydrogen evolution reaction and oxygen evolution reaction for overall water splitting.
Journal ArticleDOI
Doping-induced structural phase transition in cobalt diselenide enables enhanced hydrogen evolution catalysis.
Ya-Rong Zheng,Ping Wu,Min-Rui Gao,Xiao-Long Zhang,Fei-Yue Gao,Huanxin Ju,Rui Wu,Qiang Gao,Rui You,Weixin Huang,Shoujie Liu,Shanwei Hu,Junfa Zhu,Zhenyu Li,Shu-Hong Yu +14 more
TL;DR: A doping strategy to induce a phase transition in cobalt selenide and boost H2-evolution performance is presented, with striking catalysis performance can be attributed to the favorable electronic structure and local coordination environment created by this doping-induced structural phase transition strategy.
References
More filters
Journal ArticleDOI
Solar Water Splitting Cells
Michael G. Walter,Emily L. Warren,James R. McKone,Shannon W. Boettcher,Qixi Mi,Elizabeth A. Santori,Nathan S. Lewis +6 more
TL;DR: The biggest challenge is whether or not the goals need to be met to fully utilize solar energy for the global energy demand can be met in a costeffective way on the terawatt scale.
Journal ArticleDOI
Identification of active edge sites for electrochemical H2 evolution from MoS2 nanocatalysts.
Thomas F. Jaramillo,Kristina Pilt Jørgensen,Jacob Lindner Bonde,Jane Hvolbæk Nielsen,Sebastian Horch,Ib Chorkendorff +5 more
TL;DR: The active site for hydrogen evolution, a reaction catalyzed by precious metals, on nanoparticulate molybdenum disulfide (MoS2) is determined by atomically resolving the surface of this catalyst before measuring electrochemical activity in solution.
Journal ArticleDOI
MoS2 Nanoparticles Grown on Graphene: An Advanced Catalyst for the Hydrogen Evolution Reaction
TL;DR: In this article, a selective solvothermal synthesis of MoS2 nanoparticles on reduced graphene oxide (RGO) sheets suspended in solution was developed, which exhibited superior electrocatalytic activity in the hydrogen evolution reaction (HER).
Journal ArticleDOI
Alternative energy technologies
M. S. Dresselhaus,I. L. Thomas +1 more
TL;DR: Fossil fuels currently supply most of the world's energy needs, and however unacceptable their long-term consequences, the supplies are likely to remain adequate for the next few generations.
Journal ArticleDOI
Computational high-throughput screening of electrocatalytic materials for hydrogen evolution
TL;DR: A density functional theory-based, high-throughput screening scheme that successfully uses these strategies to identify a new electrocatalyst for the hydrogen evolution reaction (HER), which is found to have a predicted activity comparable to, or even better than, pure Pt, the archetypical HER catalyst.