Improved Electrocatalytic Performance in Overall Water Splitting with Rational Design of Hierarchical Co3 O4 @NiFe Layered Double Hydroxide Core-Shell Nanostructure

2018 ◽  
Vol 5 (10) ◽  
pp. 1357-1363 ◽  
Author(s):  
Shanpeng Wang ◽  
Jian Wu ◽  
Junwen Yin ◽  
Qi Hu ◽  
Dongsheng Geng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Rational Design ◽  
Core Shell ◽  
Overall Water Splitting ◽  
Electrocatalytic Performance ◽  
Double Hydroxide

Cu nanowires shelled with NiFe layered double hydroxide nanosheets as bifunctional electrocatalysts for overall water splitting

2017 ◽  
Vol 10 (8) ◽  
pp. 1820-1827 ◽  
Author(s):  
Luo Yu ◽  
Haiqing Zhou ◽  
Jingying Sun ◽  
Fan Qin ◽  
Fang Yu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Core Shell ◽  
Cu Nanowires ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Shell Nanostructures ◽  
Bifunctional Electrocatalysts ◽  
Double Hydroxide

3D core–shell nanostructures of few-layer NiFe LDH nanosheets grown on Cu nanowires are fabricated toward highly efficient overall water splitting.

Simple and cost effective fabrication of 3D porous core–shell Ni nanochains@NiFe layered double hydroxide nanosheet bifunctional electrocatalysts for overall water splitting

2019 ◽  
Vol 7 (38) ◽  
pp. 21722-21729 ◽  
Author(s):  
Zhengyang Cai ◽  
Xiuming Bu ◽  
Ping Wang ◽  
Wenqiang Su ◽  
Renjie Wei ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
State Of The Art ◽  
Cost Effective ◽  
The State ◽  
Core Shell ◽  
Overall Water Splitting ◽  
Porous Core ◽  
Bifunctional Electrocatalysts ◽  
Double Hydroxide

Meticulously designed 3D porous core–shell Ni nanochains@NiFe LDH nanosheets bifunctional electrocatalysts outperform the state-of-the-art IrO2 (+)//Pt/C (−) electrodes and most of the reported LDH electrocatalysts for overall water splitting.

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.

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