scholarly journals Liquid-phase Exfoliated Two-dimensional Bi Nanosheet as a Durable Electrocatalyst for Hydrogen Evolution Reaction

2021 ◽  
Author(s):  
Chenguang Duan ◽  
Huating Liu ◽  
Zongyu Huang ◽  
Hui Qiao ◽  
Yang Zhou ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Hydrogen Adsorption ◽  
Theoretical Calculations ◽  
Cost Effective ◽  
Catalytic Performance ◽  
Hydrogen Energy ◽  
Two Dimensional

Abstract Electrocatalytic hydrogen evolution is an exercisable way to achieve large-scale application of hydrogen energy. It is of great significance to develop an effect, stable and cost-effective electrocatalyst. Here, we applied the two-dimensional (2D) bismuth (Bi) to the electrocatalytic hydrogen evolution, and proposed the strategies to enhance the catalytic performance of the catalyst. The exfoliated Bi nanosheets via sonication assisted liquid-phase exfoliation display higher electrocatalytic activity (overpotential of -958 mV vs RHE at 10 mA cm− 2) compared to the bulk counterpart. Theoretical calculations about Gibbs free energy from the hydrogen adsorption for 1 layer, 2 layers and 5 layers Bi also manifest the decrease of thickness is favorable for hydrogen evolution reaction (HER). To further evaluate the electrocatalytic performance of Bi nanosheets, the typical parameters measured in different H+ concentration (C[H+]) are carried out. The improved catalytic activity obtained in 0.5 M H2SO4 is attributed to enhancing the hydrogen adsorption and accelerating the charge transport on the surface of catalyst. Moreover, the durability of Bi nanosheets electrode has been texted, where the current is not evident fluctuation during the 40000 s electrolysis measurement indicating its excellent stability. The present work expands the application of Bi in the catalysis and provides the simple strategies to improve its hydrogen evolution performance.

Flower-like tungsten-doped Fe–Co phosphides as efficient electrocatalysts for hydrogen evolution reaction

CrystEngComm ◽  
2021 ◽  
Author(s):  
Qian Zhang ◽  
Shuihua Tang ◽  
Lieha Shen ◽  
Weixiang Yang ◽  
Zhen Tang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Adsorption Energy ◽  
High Performance ◽  
Hydrogen Adsorption ◽  
Cost Effective

Developing cost-effective and high-performance electrocatalysts for hydrogen evolution reaction (HER) are imperative thanks to rapid increase of fuel-cell driven vehicles. Tungsten (W) possesses advantages of optimized hydrogen adsorption energy and...

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.

scholarly journals New Insight on Hydrogen Evolution Reaction Activity of MoP2 from Theoretical Perspective

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1270 ◽  
Author(s):  
Gao ◽  
Li ◽  
Wang ◽  
Ma ◽  
Ren
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Density Functional ◽  
Hydrogen Adsorption ◽  
Theoretical Perspective ◽  
Catalytic Performance ◽  
Design And Synthesis ◽  
Atomistic Thermodynamics ◽  
Transition Metal Phosphides

We systematically investigated the hydrogen evolution reaction (HER) of six facets of MoP2 based on the periodic density functional theory (DFT). The calculated values of Gibbs free energy of hydrogen adsorption (ΔGH) indicated that the (111) facet has a good HER activity for a large range of hydrogen coverages. The zigzagged patterns before 75% hydrogen coverage suggest a facilitation among Mo1, P1 and Mo2 sites, which are attributed to repeat occupancy sites of H atoms. From ab initial atomistic thermodynamics analysis of hydrogen coverage, we gained that the most stable coverage of hydrogen is 18.75% at 1 atm H2 and 298 K. Finally, the doping effects on HER activity were investigated and found that catalytic performance can be improved by substituting P with an S or N atom, as well as substituting the Mo atom with an Fe atom, respectively. We hope this work can provide new insights on further understanding of HER for MoP2 and give instructions for the experimental design and synthesis of transition metal phosphides (TMPs)-based high-performance catalysts.

scholarly journals A topological quantum catalyst: the case of two-dimensional traversing nodal line states associated with high catalytic performance for the hydrogen evolution reaction

2021 ◽  
Vol 9 (39) ◽  
pp. 22453-22461
Author(s):  
Lirong Wang ◽  
Xiaoming Zhang ◽  
Weizhen Meng ◽  
Ying Liu ◽  
Xuefang Dai ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Catalytic Performance ◽  
Nodal Line ◽  
Two Dimensional ◽  
Topological Quantum

Cu2C2N4 sheet as a 2D topological quantum catalyst with high edge activity for the hydrogen evolution reaction.

Large‐scale Two‐dimensional MoS x Catalyst Prepared under Mild Conditions for Enhancing Electrocatalytic Hydrogen Evolution Reaction

2020 ◽  
Vol 15 (13) ◽  
pp. 1990-1995
Author(s):  
Xiaoxia Yu ◽  
Lihong Li ◽  
Binda Chen ◽  
Cuncun Qian ◽  
Zheng Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Two Dimensional ◽  
Mild Conditions

scholarly journals Non-Precious Metal Graphene-Based Catalysts for Hydrogen Evolution Reaction

Electrochem ◽  
2020 ◽  
Vol 1 (2) ◽  
pp. 75-86 ◽  
Author(s):  
Maximina Luis-Sunga ◽  
Lana Regent ◽  
Elena Pastor ◽  
Gonzalo García
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Precious Metal ◽  
Large Scale ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Clean Energy ◽  
Mass Energy ◽  
The Past ◽  
The Many

Developing sustainable and renewable energy sources is critical as higher and higher global energy and environmental challenges arise. Hydrogen has the highest mass/energy density of any fuel and is considered one of the best sources of clean energy. Water splitting is regarded as one of the most promising solutions for hydrogen production on a large scale. Highly efficient, durable, and cost-effective catalysts for hydrogen evolution reaction (HER) are critical in the realization of this goal. Among the many materials proposed, graphene-based materials offer some unique properties for HER catalysis. In this review, we present recent progress on development of graphene-based electrocatalysts toward HER throughout the past few years.

The mechanism of hydrogen adsorption on transition metal dichalcogenides as hydrogen evolution reaction catalyst

2017 ◽  
Vol 19 (15) ◽  
pp. 10125-10132 ◽  
Author(s):  
Jinsong Wang ◽  
Jia Liu ◽  
Bao Zhang ◽  
Xiao Ji ◽  
Kui Xu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Hydrogen Adsorption ◽  
Low Cost ◽  
Transition Metal Dichalcogenides ◽  
Electrochemical Stability ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Two-dimensional transition metal dichalcogenides (TMDs) have been widely considered as potential hydrogen evolution reaction (HER) catalysts because of their low cost and good electrochemical stability in acid conditions.

Promoting effect of MXene on 1T/2H-MoSe2 for hydrogen evolution

CrystEngComm ◽  
2021 ◽  
Author(s):  
Zhitao Shao ◽  
Lili Wu ◽  
Hongfeng Ye ◽  
Xinzhi Ma ◽  
Xitian Zhang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Cost Effective ◽  
High Conductivity ◽  
Promoting Effect ◽  
The Cost

The cost-effective electrocatalysts are imperative to large-scale hydrogen evolution reaction. Herein, 1T/2H-MoSe2/Ti3C2 composites are integrated via a hydrothermal method, considering the tunable phases of MoSe2 and high conductivity of Ti3C2....

Large-scale controlled synthesis of porous two-dimensional nanosheets for the hydrogen evolution reaction through a chemical pathway

Nanoscale ◽  
2018 ◽  
Vol 10 (13) ◽  
pp. 6168-6176 ◽  
Author(s):  
Zheng Cui ◽  
Hang Chu ◽  
Shangpeng Gao ◽  
Yu Pei ◽  
Jin Ji ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Controlled Synthesis ◽  
Two Dimensional

Molybdenum disulfide (MoS2) is an extensively studied promising non-noble catalyst because of its remarkable performance for the hydrogen evolution reaction (HER).

Surface selectivity of Ni3S2 toward hydrogen evolution reaction: a first-principles study

2020 ◽  
Vol 22 (44) ◽  
pp. 25685-25694
Author(s):  
Bo Zhang ◽  
Xiuli Fu ◽  
Li Song ◽  
Xiaojun Wu
Keyword(s):  
Surface Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
First Principles ◽  
Catalytic Performance ◽  
Hydrogen Energy ◽  
First Principles Study

Exploring materials with high catalytic performance toward hydrogen evolution reaction (HER) is of importance for the development of clean hydrogen energy, and their surface structure is essential for this function.

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