Two-dimensional metallic MoS2-amorphous CoNi(OH)2 nanocomposite for enhanced electrochemical water splitting in alkaline solutions

2021 ◽  
pp. 150079
Author(s):  
Ying Zhang ◽  
Lixun Xue ◽  
Chenbin Liang ◽  
Yizhuang Chen ◽  
Junjie Liu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Alkaline Solutions ◽  
Two Dimensional ◽  
Electrochemical Water Splitting

Well-aligned metal–organic framework array-derived CoS2 nanosheets toward robust electrochemical water splitting

2018 ◽  
Vol 2 (9) ◽  
pp. 1732-1738 ◽  
Author(s):  
Na Yao ◽  
Tan Tan ◽  
Fulin Yang ◽  
Gongzhen Cheng ◽  
Wei Luo
Keyword(s):  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
Alkaline Media ◽  
Carbon Cloth ◽  
Two Dimensional ◽  
Metal Organic ◽  
Hierarchical Architectures ◽  
Electrochemical Water Splitting

Highly open three-dimensional (3D) hierarchical architectures composed of two-dimensional (2D) CoS2 nanosheets grown on carbon cloth (CoS2 NS/CC) have been synthesized by vulcanizing well-aligned MOF-array precursors and further used as superior bifunctional electrocatalysts toward the hydrogen evolution reaction (HER), the oxygen evolution reaction (OER), and overall water splitting under alkaline media.

Pristine, Metal Ion and Metal Cluster Modified Conjugated Triazine Frameworks as Electrocatalysts for Hydrogen Evolution Reaction

2021 ◽  
Author(s):  
Boying Zhang ◽  
Yunrui Zhang ◽  
Meiling Hou ◽  
Wenbo Wang ◽  
Shuozhen Hu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Electronic Property ◽  
Metal Ion ◽  
Active Sites ◽  
Metal Cluster ◽  
Porous Polymers ◽  
High Porosity ◽  
Two Dimensional ◽  
Electrochemical Water Splitting

Two-dimensional covalent triazine frameworks (2D-CTFs) are N-rich conjugated porous polymers, in which the high porosity, adjustable electronic property, and abundant active sites are advantageous to electrochemical water-splitting. Herein, we synthesize...

scholarly journals Gold-supported two-dimensional cobalt oxyhydroxide (CoOOH) and multilayer cobalt oxide islands

2017 ◽  
Vol 19 (3) ◽  
pp. 2425-2433 ◽  
Author(s):  
Jakob Fester ◽  
Alex Walton ◽  
Zheshen Li ◽  
Jeppe V. Lauritsen
Keyword(s):  
Cobalt Oxide ◽  
Water Splitting ◽  
Synthesis And Characterization ◽  
Cobalt Oxides ◽  
Two Dimensional ◽  
Model Studies ◽  
Cobalt Oxyhydroxide ◽  
Electrochemical Water Splitting

Synthesis and characterization of layered cobalt oxides for model studies of electrochemical water splitting catalysts.

scholarly journals Hierarchically Ordinated Two-Dimensional MoS2 Nanosheets on Three-Dimensional Reduced Graphene Oxide Aerogels as Highly Active and Stable Catalysts for Hydrogen Evolution Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 182
Author(s):  
Hyeonggeun Choi ◽  
Suok Lee ◽  
Min-Cheol Kim ◽  
Yeonsu Park ◽  
A-Rang Jang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Production ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Mos2 Nanosheets ◽  
Reduced Graphene ◽  
Electrochemical Water Splitting

Hydrogen gas (H2) is being intensively proposed as a next-generation clean energy owing to the depletion of fossil fuels. Electrochemical water splitting is one of the most promising processes for hydrogen production. Furthermore, many efforts focusing on electrochemical water splitting have been made to develop low-cost, electrochemically active, and stable catalysts for efficient hydrogen production. MoS2 has emerged as an attractive material for developing catalysts for the hydrogen evolution reaction (HER). Hence, in this study, we design hierarchically ordinated two-dimensional (2D) MoS2 nanosheets on three-dimensional (3D) reduced graphene oxide (rGO) (H-2D/3D-MoS2-rGO) aerogel structures as a new class of electrocatalysts for the HER. We use the one-pot hydrothermal synthesis route for developing high-performance electroactive materials for the HER. The as-prepared H-2D/3D-MoS2-rGO contains a unique 3D hierarchical structure providing large surface areas owing to the 3D porous networks of rGO and more active sites owing to the many edge sites in the MoS2 nanosheets. In addition, the H-2D/3D-MoS2-rGO structure exhibits remarkable electrochemical properties during the HER. It shows a lower overpotential than pure MoS2 and excellent electrochemical stability owing to the large number of active sites (highly exposed edge sites) and high electrical conductivity from the rGO structure.

scholarly journals Noble metal-free two dimensional carbon-based electrocatalysts for water splitting

BMC Materials ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Muhammad Adnan Younis ◽  
Siliu Lyu ◽  
Qidong Zhao ◽  
Chaojun Lei ◽  
Peiling Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Noble Metal ◽  
Noble Metals ◽  
Active Surface ◽  
Active Surface Area ◽  
Two Dimensional ◽  
Structure Property ◽  
Metal Free ◽  
Electrochemical Water Splitting ◽  
Carbon Based

AbstractNoble metal materials are widely employed as benchmark electrocatalysts to achieve electrochemical water splitting which comprises of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). However, the high cost and scarcity limit the wide ranging commercial applications of noble metal-based catalysts. Development of noble metal-free two dimensional (2D) carbon-based materials can not only reduce the consumption of noble metals, but also create materials with the characteristics of high active surface area, abundance, easy functionalization, and chemical stability, which may carve a way to promising electrochemical water splitting. In this review, noble metal-free 2D carbon-based electrocatalysts, including heteroatom (B, S, N, P, F, and O) doped graphene, 2D porous carbons modified with heteroatoms and/or transition metals, and 2D carbon-based hybrids are introduced as cost-effective alternatives to the noble metal-based electrocatalysts with comparable efficiencies to conduct HER, OER, and overall water splitting. This review emphasizes on current development in synthetic strategies and structure–property relationships of noble metal-free 2D carbon-based electrocatalysts, together with major challenges and perspectives of noble metal-free 2D carbon-based electrocatalysts for further electrochemical applications.

π∙∙∙π interaction directed 2D FeNi-LDHs nanosheets from 2D Hofmann-MOFs for oxygen evolution reaction

2022 ◽  
Author(s):  
Jiamin Huo ◽  
Ying Wang ◽  
Jie Meng ◽  
Xinyi Zhao ◽  
Quan-Guo Zhai ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Two Dimensional ◽  
Electrochemical Water Splitting ◽  
Double Hydroxides ◽  
Transformation Strategy

Layered double hydroxides (LDHs) have attracted much attention for the oxygen evolution reaction (OER) in electrochemical water splitting. In this work, we use a two-dimensional (2D) MOFs transformation strategy to...

A novel ligand with –NH2 and –COOH-decorated Co/Fe-based oxide for an efficient overall water splitting: dual modulation roles of active sites and local electronic structure

2020 ◽  
Vol 10 (18) ◽  
pp. 6266-6273
Author(s):  
Yalan Zhang ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jung Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Water Splitting ◽  
Energy Demand ◽  
Active Sites ◽  
Electrode Materials ◽  
Global Energy ◽  
Overall Water Splitting ◽  
Local Electronic Structure ◽  
Electrochemical Water Splitting

Excellent electrochemical water splitting with remarkable durability can provide a solution to satisfy the increasing global energy demand in which the electrode materials play an important role.

Applications of two dimensional material-MXene for proton exchange membrane fuel cells (PEMFCs) and water electrolysis

2020 ◽  
Vol 16 ◽  
Author(s):  
Chanchan Fan ◽  
Peng Zhang ◽  
Ranran Wang ◽  
Yezhu Xu ◽  
Xingrui Sun ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Water Splitting ◽  
Proton Exchange Membrane ◽  
Layer Structure ◽  
Metal Layer ◽  
Water Electrolysis ◽  
Proton Exchange ◽  
Two Dimensional ◽  
Max Phases ◽  
Early Transition Metal

: A new kind of two-dimensional (2D) materials MXene (early transition metal carbides, nitrides and carbonitrides) is obtained by selective etching the A element from the MAX phases. MXene exhibits both the metallic conductivity and the hydrophilic nature due to its metal layer structure and hydroxyl or oxygen terminated surfaces. This review provides an overview of the MXene used in the electrolytes and electrodes for the fuel cells and water splitting. MXene with functional groups termination could construct ion channels that significantly benefits to the ion conductivity through the electrolyte. The metal supported by MXene interaction offers electronic, compositional, and geometric effects that could enhance the catalytic activity and stability. MXene have already shown promising performance for fuel cells and water electrolysis. Herein, the etching and intercalation methods of MXene in recent years are summarized. The applications of MXene for fuel cells electrolyte, catalyst and water splitting catalyst are revealed to provide more brief idea for MXene used as new energy materials.

Sign in / Sign up

Export Citation Format

Share Document