MOF-derived hierarchical 3D bi-doped CoP nanoflower eletrocatalyst for hydrogen evolution reaction in both acidic and alkaline media

2020 ◽  
Vol 56 (56) ◽  
pp. 7702-7705 ◽  
Author(s):  
Lei Guo ◽  
Xue Bai ◽  
Hui Xue ◽  
Jing Sun ◽  
Tianshan Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Alkaline Media ◽  
Alkaline Electrolyte ◽  
Acidic Electrolyte ◽  
Acidic And Alkaline Media ◽  
A Current

A 3D hierarchical Bi-doped CoP nanoflowers electrocatalyst is developed based on a MOF self-sacrifice strategy. The 3% Bi/CoP catalyst delivers a current density of 10 mA cm−2 at low overpotentials of 122 mV in alkaline electrolyte and 150 mV in acidic electrolyte.

Permeation of Electrolytically Generated Hydrogen and Tritium Atoms through Lead

1971 ◽  
Vol 49 (14) ◽  
pp. 2406-2411 ◽  
Author(s):  
Bansi L. Muju ◽  
Frank R. Smith
Keyword(s):  
Current Density ◽  
Separation Factor ◽  
Room Temperature ◽  
Alkaline Media ◽  
Gas Evolution ◽  
Hydrogen Atoms ◽  
Metal Lattice ◽  
Acidic And Alkaline Media ◽  
A Current ◽  
Lead Foil

Radiochemical and electrochemical evidence is presented that electrochemically generated tritium and hydrogen atoms permeate through lead foil at measureable rates at room temperature. The permeation process is controlled by diffusion through the metal lattice, Fick's First Law being obeyed by both H and 3H atoms. Using earlier measurements of the diffusivity of H in Pb, H and 3H concentrations of 4 × 10−7 and 9 × 10−13 g-atom cm−3 are computed for a current density of 53 mA cm−2 at the Pb cathode surface.The overall hydrogen-tritium separation factor, ST is apparently 0.3 ± 0.15, in contrast to Bockris and Srinivasan's 6.7 and 7.2 for cathodic gas evolution from acidic and alkaline media, respectively. Reasons are suggested for this large difference.

Gas-templating of hierarchically structured Ni–Co–P for efficient electrocatalytic hydrogen evolution

2017 ◽  
Vol 5 (16) ◽  
pp. 7564-7570 ◽  
Author(s):  
Peili Zhang ◽  
Hong Chen ◽  
Mei Wang ◽  
Yong Yang ◽  
Jian Jiang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
A Current

A hierarchically structured Ni–Co–P film exhibits remarkable activity toward the hydrogen evolution reaction with a current density of −10 mA cm−2 at −30 mV vs. the RHE.

scholarly journals Rapid Synthesis of Nickel Boride/Graphene by Microwave Thermal Shock and its Application in Hydrogen Evolution Reaction

2022 ◽  
Vol 2160 (1) ◽  
pp. 012007
Author(s):  
Shuai Wang ◽  
Rui Zhao ◽  
Weidong Xue
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Synergetic Effect ◽  
Specific Area ◽  
Clean Energy ◽  
Alkaline Media ◽  
Promising Candidate ◽  
Active Centre ◽  
Metal Borides

Abstract The urgent demand for sustainable and clean energy has promoted the development of water splitting. Herein, metal borides assisted synthesis of graphene-based material (Ni-B/G) has been carried out by facile and fast microwave heating method and applied to hydrogen evolution reaction (HER) in alkaline solution. The Ni-B combining with 2D graphene give rise to highly efficient HER performance with low overpotential of 187 mV at current density of 10 mA cm−2. In addition, it exhibits good stability and retains 76% of current density after continuous oxygen release. The excellent performance is ascribed to the synergetic effect of Ni-B and graphene. The Ni-B not only acts as initiator to adsorb microwave energy but also works as active centre of catalyst. The high conductivity and large specific area of graphene offer accessible contact between electrolyte and intermediates. Therefore, Ni-B/G indicates a promising candidate for HER in alkaline media.

Ultrasmall Ru2P nanoparticles on graphene: a highly efficient hydrogen evolution reaction electrocatalyst in both acidic and alkaline media

2018 ◽  
Vol 54 (27) ◽  
pp. 3343-3346 ◽  
Author(s):  
Tingting Liu ◽  
Shuo Wang ◽  
Qiuju Zhang ◽  
Liang Chen ◽  
Weihua Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene ◽  
Alkaline Conditions ◽  
Acidic And Alkaline Media

A Pt-free catalyst of ultrasmall Ru2P nanoparticles on reduced graphene oxide nanosheets (Ru2P/RGO-20) shows remarkable HER catalytic activity under acidic and alkaline conditions, respectively, both superior to those of commercial Pt/C.

An ultrafine ruthenium nanocrystal with extremely high activity for the hydrogen evolution reaction in both acidic and alkaline media

2018 ◽  
Vol 54 (93) ◽  
pp. 13076-13079 ◽  
Author(s):  
Yutong Li ◽  
Fuqiang Chu ◽  
Yang Liu ◽  
Yong Kong ◽  
Yongxin Tao ◽  
...  
Keyword(s):  
High Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
High Crystallinity ◽  
Acidic And Alkaline Media

An ultrafine ruthenium nanocrystal with high crystallinity features remarkable performance in the electro-catalyzed hydrogen evolution reaction in both acidic and alkaline media.

Comparative Study in Acidic and Alkaline Media of the Effects of pH and Crystallinity on the Hydrogen-Evolution Reaction on MoS2 and MoSe2

2017 ◽  
Vol 2 (10) ◽  
pp. 2234-2238 ◽  
Author(s):  
Joshua D. Wiensch ◽  
Jimmy John ◽  
Jesus M. Velazquez ◽  
Daniel A. Torelli ◽  
Adam P. Pieterick ◽  
...  
Keyword(s):  
Comparative Study ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Effects Of Ph ◽  
Acidic And Alkaline Media
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