Metal-ionic-conductor potassium ferrite nanocrystals with intrinsic superhydrophilic surfaces for electrocatalytic water splitting at ultrahigh current densities

2021 ◽  
Vol 9 (12) ◽  
pp. 7586-7593
Author(s):  
Juan Jian ◽  
Wei Chen ◽  
Decheng Zeng ◽  
Limin Chang ◽  
Ran Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Nickel Foam ◽  
Ionic Conductor ◽  
Large Current ◽  
Binder Free ◽  
Large Current Density ◽  
Current Densities ◽  
Superhydrophilic Surfaces

Metal-ionic-conductor K2Fe4O7 (KFO) with instinct superhydrophilic properties was hydrothermally grown on nickel foam (NF), the formed binder-free nano-KFO/NF can deliver extremely large current density for water splitting.

Industrially promising NiCoP nanorod arrays tailored with trace W and Mo atoms for boosting large-current-density overall water splitting

Nanoscale ◽  
2021 ◽  
Author(s):  
Xin Guo ◽  
Menggang Li ◽  
Lin He ◽  
Shuo Geng ◽  
Fenyang Tian ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Nanorod Arrays ◽  
Overall Water Splitting ◽  
Large Current ◽  
Large Current Density ◽  
High Overpotentials ◽  
Current Densities

Nanoarray catalysts supported on the substrates provide an opportunity for industrially promising overall water splitting at large-current-densities. However, most of the present electrocatalysts show high overpotentials at a large current...

A three-dimensional coral-like Zn,O-codoped Ni3S2 electrocatalyst for efficient overall water splitting at a large current density

2022 ◽  
Author(s):  
Liyun Cao ◽  
Yifei Zhang ◽  
Liangliang Feng ◽  
Danyang He ◽  
Qianqian Liu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Solvothermal Method ◽  
High Current Density ◽  
Nickel Foam ◽  
Three Dimensional ◽  
High Current ◽  
Large Current ◽  
Large Current Density ◽  
Facile Solvothermal Method

A three-dimensional coral-like Zn,O-codoped Ni3S2 nanostructure is grown on nickel foam via a facile solvothermal method, exhibiting excellent electrocatalytic performance at high current density.

Industrially promising IrNi-FeNi3 hybrid nanosheets for overall water splitting catalysis at large current density

2021 ◽  
Vol 286 ◽  
pp. 119881
Author(s):  
Yamei Wang ◽  
Guangfu Qian ◽  
Qinglian Xu ◽  
Hao Zhang ◽  
Fang Shen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Overall Water Splitting ◽  
Large Current ◽  
Large Current Density

scholarly journals Engineering active sites on hierarchical transition bimetal oxides/sulfides heterostructure array enabling robust overall water splitting

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Panlong Zhai ◽  
Yanxue Zhang ◽  
Yunzhen Wu ◽  
Junfeng Gao ◽  
Bo Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Active Sites ◽  
Rational Design ◽  
Large Scale ◽  
Grand Challenge ◽  
Long Term Stability ◽  
Large Current ◽  
Electrode Cell ◽  
Large Current Density ◽  
Current Densities

Abstract Rational design of the catalysts is impressive for sustainable energy conversion. However, there is a grand challenge to engineer active sites at the interface. Herein, hierarchical transition bimetal oxides/sulfides heterostructure arrays interacting two-dimensional MoOx/MoS2 nanosheets attached to one-dimensional NiOx/Ni3S2 nanorods were fabricated by oxidation/hydrogenation-induced surface reconfiguration strategy. The NiMoOx/NiMoS heterostructure array exhibits the overpotentials of 38 mV for hydrogen evolution and 186 mV for oxygen evolution at 10 mA cm−2, even surviving at a large current density of 500 mA cm−2 with long-term stability. Due to optimized adsorption energies and accelerated water splitting kinetics by theory calculations, the assembled two-electrode cell delivers the industrially relevant current densities of 500 and 1000 mA cm−2 at record low cell voltages of 1.60 and 1.66 V with excellent durability. This research provides a promising avenue to enhance the electrocatalytic performance of the catalysts by engineering interfacial active sites toward large-scale water splitting.

Industrially Promising Nanowire Heterostructure Catalyst for Enhancing Overall Water Splitting at Large Current Density

2020 ◽  
Vol 8 (32) ◽  
pp. 12063-12071 ◽  
Author(s):  
Guangfu Qian ◽  
Jinli Chen ◽  
Lin Luo ◽  
Tianqi Yu ◽  
Yamei Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Overall Water Splitting ◽  
Large Current ◽  
Large Current Density
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