Construction of a hierarchically structured, NiCo-Cu-based trifunctional electrocatalyst for efficient overall water splitting and 5-hydroxymethylfurfural oxidation

2021 ◽  
Author(s):  
Ruijuan Zheng ◽  
Chenhao Zhao ◽  
Jinhua Xiong ◽  
Xue Teng ◽  
Wu-Hua Chen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Three Dimensional ◽  
Nanowire Arrays ◽  
Overall Water Splitting ◽  
Nickel Cobalt ◽  
Double Hydroxide ◽  
Cu Foam

In this study, Cu nanowire arrays grown on a three-dimensional Cu foam substrate are modified by nickel-cobalt layered double hydroxide nanosheets (NiCoNSs/CuNWs), which can be used as a self-supporting trifunctional...

Nickel–cobalt-layered double hydroxide nanosheet arrays on Ni foam as a bifunctional electrocatalyst for overall water splitting

2017 ◽  
Vol 46 (26) ◽  
pp. 8372-8376 ◽  
Author(s):  
Wenjun Liu ◽  
Jian Bao ◽  
Meili Guan ◽  
Yan Zhao ◽  
Jiabiao Lian ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Nickel Foam ◽  
Ni Foam ◽  
Bifunctional Electrocatalyst ◽  
Ultrathin Nanosheets ◽  
Overall Water Splitting ◽  
Nickel Cobalt ◽  
Nanosheet Arrays ◽  
Double Hydroxide

A bifunctional electrocatalyst based on NiCo-LDH ultrathin nanosheets grown on a nickel foam shows a superior overall water-splitting performance.

Highly efficient overall water splitting over a porous interconnected network by nickel cobalt oxysulfide interfacial assembled Cu@Cu2S nanowires

2020 ◽  
Vol 8 (29) ◽  
pp. 14746-14756
Author(s):  
Duy Thanh Tran ◽  
Van Hien Hoa ◽  
Huu Tuan Le ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Water Splitting ◽  
Alkaline Medium ◽  
Nanowire Arrays ◽  
Interconnected Network ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Nickel Cobalt

A highly efficient electrocatalyst based on nickel cobalt oxysulfide interfacial assembled Cu@Cu2S nanowire arrays was constructed for simultaneously accelerating HER and OER in alkaline medium.

A Three-Dimensional ZnO/CdS/NiFe Layered Double Hydroxide Photoanode Coupled with a Cu2O Photocathode in a Tandem Cell for Overall Solar Water Splitting

NANO ◽  
2019 ◽  
Vol 14 (11) ◽  
pp. 1950146
Author(s):  
Jia Liu ◽  
Yinghua Zhang ◽  
Zhiming Bai ◽  
Zhian Huang ◽  
Yukun Gao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Three Dimensional ◽  
Photocurrent Density ◽  
Cds Nanoparticles ◽  
Zero Bias ◽  
Tandem Cell ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Double Hydroxide

An integrated tandem photoelectrochemical (PEC) cell, composed of a three-dimensional (3D) ZnO/CdS/NiFe layered double hydroxide (LDH) core/shell/hierarchical nanowire arrays (NWAs) photoanode and a [Formula: see text]-Cu2O photocathode, was designed for unassisted overall solar water splitting in this study. The optical and photoelectrochemical characteristics of ZnO-based photoanodes and Cu2O photocathode were investigated. The results show that ZnO/CdS/NiFe LDH nanostructures offer significantly enhanced performances with a photocurrent density reaching 5.8[Formula: see text]mA[Formula: see text][Formula: see text][Formula: see text]cm[Formula: see text] at 0.9[Formula: see text]V and an onset potential as early as 0.1[Formula: see text]V (versus RHE). The enhancement can be attributed to the existence of CdS nanoparticles (NPs) which boosts the light absorption in visible region and enhances charge separation. Moreover, the introduction of NiFe LDH nanoplates, with unique hierarchical mesoporous architecture, promotes electrochemical reactions by providing more active sites as co-catalyst. On the above basis, the ZnO/CdS/NiFe LDH–Cu2O two-electrode tandem cell system was established. At zero bias, the device shows a photocurrent density of 0.4[Formula: see text]mA[Formula: see text][Formula: see text][Formula: see text]cm[Formula: see text] along with the corresponding solar-to-hydrogen (STH) conversion efficiency reaching 0.50%. Our results indicate that the tandem PEC cells consisting of metal–oxide–semiconductor photoelectrodes based on Earth-abundant and low-cost materials hold promising application potential for overall solar water splitting.

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.

Electrodepositing Pd on NiFe layered double hydroxide for improved water electrolysis

2019 ◽  
Vol 3 (5) ◽  
pp. 842-850 ◽  
Author(s):  
Jinxue Guo ◽  
Jikang Sun ◽  
Yanfang Sun ◽  
Qingyun Liu ◽  
Xiao Zhang
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Active Sites ◽  
Nickel Foam ◽  
Water Electrolysis ◽  
Pd Nanoparticles ◽  
Intrinsic Activity ◽  
Overall Water Splitting ◽  
Double Hydroxide

Ultrafine Pd nanoparticles with less than 0.12 at% are electrodeposited on nickel foam supported NiFe LDH to obtain improved intrinsic activity, more active sites, and enhanced charge transfer for improved bifunctionality towards overall water splitting.

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