2D-structured V-doped Ni(Co,Fe) phosphides with enhanced charge transfer and reactive sites for highly efficient overall water splitting electrocatalysts

2021 ◽  
Author(s):  
Yongjae Jeung ◽  
Hyeonjung Jung ◽  
Dokyoung Kim ◽  
Hyogyun Roh ◽  
Chaeeun Lim ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Bond Strength ◽  
Water Splitting ◽  
Active Sites ◽  
Reaction Intermediates ◽  
Strong Bond ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Ni Alloy

2-D Ni alloy phosphide catalysts are of great interest due to their strong bond strength to reaction intermediates and numerous active sites for alkaline overall water splitting (OWS) reactions. However,...

A Binder-free Fe-Doped NiCo2O4/Ni3S4 Hollow Heterostructure Nanotubes for Highly Efficient Overall Water Splitting

2021 ◽  
Author(s):  
Zhaohui Liu ◽  
Bolin Zhao ◽  
Chenhao Pan ◽  
Hang Zhao
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Active Sites ◽  
Heterogeneous Catalysts ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Binder Free

For overall water splitting, a vital challenge is to design active sites at the interface. Heterogeneous catalysts with enhanced mass/charge transfer, and accelerated adsorption of intermediates have exhibited significantly enhanced...

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.

Study of active sites on Se-MnS/NiS heterojunctions as highly efficient bifunctional electrocatalysts for overall water splitting

2019 ◽  
Vol 7 (47) ◽  
pp. 26975-26983 ◽  
Author(s):  
Jie Zhu ◽  
Mao Sun ◽  
Shujie Liu ◽  
Xianhu Liu ◽  
Kan Hu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Active Sites ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts

Se-doped MnS/NiS as a highly efficient bifunctional electrocatalyst.

A novel ligand with –NH2 and –COOH-decorated Co/Fe-based oxide for an efficient overall water splitting: dual modulation roles of active sites and local electronic structure

2020 ◽  
Vol 10 (18) ◽  
pp. 6266-6273
Author(s):  
Yalan Zhang ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jung Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Water Splitting ◽  
Energy Demand ◽  
Active Sites ◽  
Electrode Materials ◽  
Global Energy ◽  
Overall Water Splitting ◽  
Local Electronic Structure ◽  
Electrochemical Water Splitting

Excellent electrochemical water splitting with remarkable durability can provide a solution to satisfy the increasing global energy demand in which the electrode materials play an important role.

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.

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