Rational design of ultrahigh porosity Co foam supported flower-like FeNiP-LDH electrocatalysts towards hydrogen evolution reaction

2021 ◽  
Author(s):  
Xuefeng Liu ◽  
Yuantao Pei ◽  
Liang Huang ◽  
Wen Lei ◽  
Faliang Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design

scholarly journals Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Yingjie Yang ◽  
Yanhui Yu ◽  
Jing Li ◽  
Qingrong Chen ◽  
Yanlian Du ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Energy System ◽  
Structure Design ◽  
Single Atom ◽  
Research Progress ◽  
Pure Hydrogen ◽  
Hydrogen Energy ◽  
Practical Applications

AbstractThe investigation of highly effective, durable, and cost-effective electrocatalysts for the hydrogen evolution reaction (HER) is a prerequisite for the upcoming hydrogen energy society. To establish a new hydrogen energy system and gradually replace the traditional fossil-based energy, electrochemical water-splitting is considered the most promising, environmentally friendly, and efficient way to produce pure hydrogen. Compared with the commonly used platinum (Pt)-based catalysts, ruthenium (Ru) is expected to be a good alternative because of its similar hydrogen bonding energy, lower water decomposition barrier, and considerably lower price. Analyzing and revealing the HER mechanisms, as well as identifying a rational design of Ru-based HER catalysts with desirable activity and stability is indispensable. In this review, the research progress on HER electrocatalysts and the relevant describing parameters for HER performance are briefly introduced. Moreover, four major strategies to improve the performance of Ru-based electrocatalysts, including electronic effect modulation, support engineering, structure design, and maximum utilization (single atom) are discussed. Finally, the challenges, solutions and prospects are highlighted to prompt the practical applications of Ru-based electrocatalysts for HER.

scholarly journals Engineering single-atomic ruthenium catalytic sites on defective nickel-iron layered double hydroxide for overall water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Panlong Zhai ◽  
Mingyue Xia ◽  
Yunzhen Wu ◽  
Guanghui Zhang ◽  
Junfeng Gao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Density Functional ◽  
Rational Design ◽  
Single Atom ◽  
Nickel Iron ◽  
Double Hydroxide

AbstractRational design of single atom catalyst is critical for efficient sustainable energy conversion. However, the atomic-level control of active sites is essential for electrocatalytic materials in alkaline electrolyte. Moreover, well-defined surface structures lead to in-depth understanding of catalytic mechanisms. Herein, we report a single-atomic-site ruthenium stabilized on defective nickel-iron layered double hydroxide nanosheets (Ru1/D-NiFe LDH). Under precise regulation of local coordination environments of catalytically active sites and the existence of the defects, Ru1/D-NiFe LDH delivers an ultralow overpotential of 18 mV at 10 mA cm−2 for hydrogen evolution reaction, surpassing the commercial Pt/C catalyst. Density functional theory calculations reveal that Ru1/D-NiFe LDH optimizes the adsorption energies of intermediates for hydrogen evolution reaction and promotes the O–O coupling at a Ru–O active site for oxygen evolution reaction. The Ru1/D-NiFe LDH as an ideal model reveals superior water splitting performance with potential for the development of promising water-alkali electrocatalysts.

Fe-Co-P multi-heterostructure arrays for efficient electrocatalytic water splitting

2021 ◽  
Author(s):  
Hanwen Xu ◽  
Jiawei Zhu ◽  
Pengyan Wang ◽  
Ding Chen ◽  
Chengtian Zhang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Rational Design ◽  
Large Scale ◽  
High Efficiency ◽  
Bifunctional Catalysts

Rational design and construction of high-efficiency bifunctional catalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is crucial for large-scale hydrogen production by water splitting. Herein, by a...

Rational Design of Single Molybdenum Atoms Anchored on N-Doped Carbon for Effective Hydrogen Evolution Reaction

2017 ◽  
Vol 56 (50) ◽  
pp. 16086-16090 ◽  
Author(s):  
Wenxing Chen ◽  
Jiajing Pei ◽  
Chun-Ting He ◽  
Jiawei Wan ◽  
Hanlin Ren ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Effective Hydrogen

Rational Design and Synthesis of Extremely Efficient Macroporous CoSe2-CNT Composite Microspheres for Hydrogen Evolution Reaction

Small ◽  
2017 ◽  
Vol 13 (27) ◽  
pp. 1700068 ◽  
Author(s):  
Jin Koo Kim ◽  
Gi Dae Park ◽  
Jung Hyun Kim ◽  
Seung-Keun Park ◽  
Yun Chan Kang
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Design And Synthesis ◽  
Composite Microspheres

Rational design of atomically dispersed nickel active sites in β-Mo2C for the hydrogen evolution reaction at all pH values

2018 ◽  
Vol 54 (71) ◽  
pp. 9901-9904 ◽  
Author(s):  
Ting Ouyang ◽  
An-Na Chen ◽  
Zhen-Zhao He ◽  
Zhao-Qing Liu ◽  
Yexiang Tong
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Properties ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
Rational Design ◽  
Efficient Catalyst ◽  
Ph Values ◽  
Ni Species

Atomically dispersed Ni in β-Mo2C (Ni/β-Mo2C) is designed as an efficient catalyst for the HER at all pH values. The remarkable electrochemical properties of Ni/β-Mo2C are mainly attributed to the synergistic effect between atomically dispersed Ni species and β-Mo2C.

scholarly journals Rational Design of Graphene-Supported Single Atom Catalysts for Hydrogen Evolution Reaction

2019 ◽  
Vol 9 (10) ◽  
pp. 1803689 ◽  
Author(s):  
Md Delowar Hossain ◽  
Zhenjing Liu ◽  
Minghao Zhuang ◽  
Xingxu Yan ◽  
Gui-Liang Xu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Single Atom

scholarly journals Highly efficient electrocatalytic hydrogen evolution reaction on carbonized porous conducting polymers

2020 ◽  
Vol 24 (11-12) ◽  
pp. 2763-2771
Author(s):  
Abhishek Lahiri ◽  
Guozhu Li ◽  
Frank Endres
Keyword(s):  
Conducting Polymers ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
High Surface ◽  
High Surface Area ◽  
Fine Tuning ◽  
Great Promise ◽  
Copolymer Composition ◽  
Electrochemical Approach

Abstract A rational design of an efficient and inexpensive electrocatalyst for water splitting still remains a challenge. Porous conducting polymers are attractive materials which not only provide a high surface area for electrocatalysis but also absorb light which can be harnessed in photoelectrocatalysis. Here, a novel and inexpensive electrochemical approach is developed to obtain nanoporous conducting copolymers with tunable light absorbance and porosity. By fine-tuning the copolymer composition and upon heat treatment, an excellent electrocatalytic hydrogen evolution reaction (HER) was achieved in alkaline solution with an overpotential of just 77 mV to obtain a current density of 10 mA cm−2. Such an overpotential is remarkably low compared with other reported values for polymers in an alkaline medium. The nanoporous copolymer developed here shows a great promise of using metal-free electrocatalysts and brings about new avenues for exploitation of these porous conducting polymers.

Rational design of Pt–Ni–Co ternary alloy nanoframe crystals as highly efficient catalysts toward the alkaline hydrogen evolution reaction

Nanoscale ◽  
2016 ◽  
Vol 8 (36) ◽  
pp. 16379-16386 ◽  
Author(s):  
Aram Oh ◽  
Young Jin Sa ◽  
Hyeyoun Hwang ◽  
Hionsuck Baik ◽  
Jun Kim ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Ternary Alloy ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Highly Efficient
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