Vanadium nanobelts coated nickel foam 3D bifunctional electrode with excellent catalytic activity and stability for water electrolysis

Nanoscale ◽  
2016 ◽  
Vol 8 (20) ◽  
pp. 10731-10738 ◽  
Author(s):  
Yu Yu ◽  
Pei Li ◽  
Xiaofang Wang ◽  
Wenyu Gao ◽  
Zongxu Shen ◽  
...  

A novel electrode constructed by a uniform film of nanosized vanadium nanobelts on nickel foam has been developed, which exhibits excellent electroactivity and durability for HER, OER, and overall water splitting.

2019 ◽  
Vol 3 (5) ◽  
pp. 842-850 ◽  
Author(s):  
Jinxue Guo ◽  
Jikang Sun ◽  
Yanfang Sun ◽  
Qingyun Liu ◽  
Xiao Zhang

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.


RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 34995-35002 ◽  
Author(s):  
Qingyou Huang ◽  
Yang Cao ◽  
Xiaohong Wang ◽  
Jinchun Tu ◽  
Qianfeng Xia ◽  
...  

(a) LSV of overall water splitting for the respective component at a scan rate of 5 mV s−1. (b) Chronopotentiometry curve under a constant current density of 20 mA cm−2. Inset: photographic image of two-electrode water electrolysis device.


2020 ◽  
Vol 11 (2) ◽  
pp. 458-466
Author(s):  
D. V. Fominski ◽  
V. N. Nevolin ◽  
R. I. Romanov ◽  
V. Yu. Fominski ◽  
O. V. Komleva ◽  
...  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xixi Ji ◽  
Yanhong Lin ◽  
Jie Zeng ◽  
Zhonghua Ren ◽  
Zijia Lin ◽  
...  

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.


Author(s):  
Liang Fang ◽  
Yanping Xie ◽  
Peiyin Guo ◽  
Jingpei Zhu ◽  
Shuhui Xiao ◽  
...  

Vertical NiPS3 nanosheets in situ grown on conducting nickel foam were fabricated by a facile one-step chemical vapor transport method and used as an efficient bifunctional catalyst for overall water splitting.


Nanoscale ◽  
2018 ◽  
Vol 10 (47) ◽  
pp. 22173-22179 ◽  
Author(s):  
Kai Li ◽  
Jingwen Ma ◽  
Xinglong Guan ◽  
Hongwei He ◽  
Min Wang ◽  
...  

Electrolyzing water as a sustainable energy source is a promising and appealing method to resolve the environmental crisis.


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