Self-supported nickel–cobalt nanowires as highly efficient and stable electrocatalysts for overall water splitting

Nanoscale ◽  
2018 ◽  
Vol 10 (39) ◽  
pp. 18767-18773 ◽  
Author(s):  
Hui Xu ◽  
Jingjing Wei ◽  
Min Zhang ◽  
Jin Wang ◽  
Yukihide Shiraishi ◽  
...  
Keyword(s):  
Water Splitting ◽  
Low Voltage ◽  
Water Electrolysis ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Highly Active ◽  
Cobalt Nanowires ◽  
Nickel Cobalt

The Ni1Co1O2 NWs//Ni1Co1P NWs couple is highly active and stable for overall water electrolysis with a low voltage of 1.58 V at 10 mA cm−2, showing extraordinary promise for practical overall water splitting electrolysis.

scholarly journals Graphene/MoS2/FeCoNi(OH)x and Graphene/MoS2/FeCoNiPx multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xixi Ji ◽  
Yanhong Lin ◽  
Jie Zeng ◽  
Zhonghua Ren ◽  
Zijia Lin ◽  
...  
Keyword(s):  
Water Splitting ◽  
Carbon Fibers ◽  
Graphene Nanosheets ◽  
Water Electrolysis ◽  
Hybrid Structure ◽  
Hydrogen Energy ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Stable Oxygen ◽  
Excellent Stability

AbstractDevelopment of excellent and cheap electrocatalysts for water electrolysis is of great significance for application of hydrogen energy. Here, we show a highly efficient and stable oxygen evolution reaction (OER) catalyst with multilayer-stacked hybrid structure, in which vertical graphene nanosheets (VGSs), MoS2 nanosheets, and layered FeCoNi hydroxides (FeCoNi(OH)x) are successively grown on carbon fibers (CF/VGSs/MoS2/FeCoNi(OH)x). The catalyst exhibits excellent OER performance with a low overpotential of 225 and 241 mV to attain 500 and 1000 mA cm−2 and small Tafel slope of 29.2 mV dec−1. Theoretical calculation indicates that compositing of FeCoNi(OH)x with MoS2 could generate favorable electronic structure and decrease the OER overpotential, promoting the electrocatalytic activity. An alkaline water electrolyzer is established using CF/VGSs/MoS2/FeCoNi(OH)x anode for overall water splitting, which generates a current density of 100 mA cm−2 at 1.59 V with excellent stability over 100 h. Our highly efficient catalysts have great prospect for water electrolysis.

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.

Hierarchical nickel–cobalt phosphide yolk–shell spheres as highly active and stable bifunctional electrocatalysts for overall water splitting

Nanoscale ◽  
2016 ◽  
Vol 8 (45) ◽  
pp. 19129-19138 ◽  
Author(s):  
Zhuoxun Yin ◽  
Chunling Zhu ◽  
Chunyan Li ◽  
Shen Zhang ◽  
Xitian Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Cobalt Phosphide ◽  
Overall Water Splitting ◽  
Highly Active ◽  
Nickel Cobalt ◽  
Bifunctional Electrocatalysts

Combining Co3S4 and Ni:Co3S4 nanowires as efficient catalysts for overall water splitting: an experimental and theoretical study

Nanoscale ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 2202-2210 ◽  
Author(s):  
Shasha Tang ◽  
Xing Wang ◽  
Yongqi Zhang ◽  
Marc Courté ◽  
Hong Jin Fan ◽  
...  
Keyword(s):  
Water Splitting ◽  
Mass Production ◽  
Theoretical Study ◽  
Low Cost ◽  
Water Electrolysis ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Production Of Hydrogen

In the quest for mass production of hydrogen from water electrolysis, to develop highly efficient, stable and low-cost catalysts is still the central challenge.

CoO-modified Co4N as a heterostructured electrocatalyst for highly efficient overall water splitting in neutral media

2018 ◽  
Vol 6 (48) ◽  
pp. 24767-24772 ◽  
Author(s):  
Rui-Qing Li ◽  
Pengfei Hu ◽  
Meng Miao ◽  
Yongle Li ◽  
Xiang-Fen Jiang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Low Voltage ◽  
Bifunctional Catalysis ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Neutral Media

A CoO-domain-coated porous Co4N array was integrated for bifunctional catalysis of overall water splitting with a low voltage of 1.79 V in neutral media.

Double-shelled hollow bimetallic phosphide nanospheres anchored on nitrogen-doped graphene for boosting water electrolysis

2020 ◽  
Vol 8 (42) ◽  
pp. 22222-22229 ◽  
Author(s):  
Dongxu Yang ◽  
Zhe Su ◽  
Yuanfu Chen ◽  
Yingjiong Lu ◽  
Bo Yu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Electrolysis ◽  
Bifunctional Electrocatalyst ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

A structure of MOF-derived double-shelled hollow nanoshperes anchored on nitrogen-doped graphene is synthesized. This material is suitable as a highly-efficient bifunctional electrocatalyst for OER, HER and overall water splitting.

Constructing ultrathin CoP nanomeshes by Er-doping for highly efficient bifunctional electrocatalysts for overall water splitting

2019 ◽  
Vol 7 (10) ◽  
pp. 5769-5778 ◽  
Author(s):  
Gengwei Zhang ◽  
Bin Wang ◽  
Jinglei Bi ◽  
Dangqi Fang ◽  
Shengchun Yang
Keyword(s):  
Water Splitting ◽  
Noble Metal ◽  
Water Electrolysis ◽  
Commercial Production ◽  
Bifunctional Catalysts ◽  
Er Doping ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Production Of Hydrogen

Exploring highly efficient non-noble-metal bifunctional catalysts for water electrolysis is vital for the commercial production of hydrogen.

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