scholarly journals Promoting the hydrogen evolution reaction through oxygen vacancies and phase transformation engineering on layered double hydroxide nanosheets

2020 ◽  
Vol 8 (5) ◽  
pp. 2490-2497 ◽  
Author(s):  
Shujie Liu ◽  
Jie Zhu ◽  
Mao Sun ◽  
Zhixue Ma ◽  
Kan Hu ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Hydrogen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Plasma Etching ◽  
Oxygen Vacancies ◽  
Double Hydroxide

Effective HER activity on layered double hydroxide nanosheets through a plasma etching strategy.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

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.

Enhancing hydrogen evolution reaction through modulating electronic structure of self-supported NiFe LDH

2020 ◽  
Vol 10 (13) ◽  
pp. 4184-4190 ◽  
Author(s):  
Xiao-Peng Li ◽  
Wen-Kai Han ◽  
Kang Xiao ◽  
Ting Ouyang ◽  
Nan Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Alkaline Electrolyte ◽  
Overall Water Splitting ◽  
Double Hydroxide

NiFe-layered double hydroxide (NiFe LDH), as an efficient oxygen evolution reaction (OER) electrocatalyst, has emerged as a promising electrocatalyst for catalyzing overall water splitting in alkaline electrolyte.

Electro-synthesis of sulfur doped nickel cobalt layered double hydroxide for electrocatalytic hydrogen evolution reaction and supercapacitor applications

2019 ◽  
Vol 833 ◽  
pp. 105-112 ◽  
Author(s):  
Namachivayam Karthik ◽  
Thomas Nesakumar Jebakumar Immanuel Edison ◽  
Raji Atchudan ◽  
Dangsheng Xiong ◽  
Yong Rok Lee
Keyword(s):  
Hydrogen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Nickel Cobalt ◽  
Double Hydroxide ◽  
Supercapacitor Applications

Synergistically enhanced alkaline hydrogen evolution reaction by coupling CoFe layered double hydroxide with NiMoO4 prepared by two-step electrodeposition

2021 ◽  
Author(s):  
Jiankang Wang ◽  
Kui Chen ◽  
Rong Peng ◽  
Yajing Wang ◽  
Taiping Xie ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Cost Effective ◽  
Highly Efficient ◽  
Double Hydroxide

Exploiting cost-effective, highly efficient and stable alkaline electrocatalyst is of great challenges for hydrogen evolution reaction (HER). Herein, NiMoO4 and CoFe layered double hydroxide (CoFe LDH) with poor crystallinity were...

scholarly journals An earth-abundant bimetallic catalyst coated metallic nanowire grown electrode with platinum-like pH-universal hydrogen evolution activity at high current density

2020 ◽  
Vol 11 (15) ◽  
pp. 3893-3902 ◽  
Author(s):  
Sahanaz Parvin ◽  
Ashwani Kumar ◽  
Anima Ghosh ◽  
Sayan Bhattacharyya
Keyword(s):  
Hydrogen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Bimetallic Catalyst ◽  
High Current Density ◽  
High Current ◽  
Cu Nanowires ◽  
Earth Abundant ◽  
Double Hydroxide

A flexible self-supported electrode made of earth-abundant elements, NiCo layered double hydroxide wrapped around Cu nanowires grown on Cu mesh, outperforms the benchmark 40 wt% Pt/C in catalyzing electrochemical hydrogen evolution reaction.

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