Application of 2D Pit Growth Method to Mg Thin Films: Part II. Salt Film and Hydrogen Evolution

2019 ◽  
Vol 166 (11) ◽  
pp. C3266-C3274 ◽  
Author(s):  
Aline D. Gabbardo ◽  
G. Viswanathan ◽  
G. S. Frankel
Keyword(s):  
Thin Films ◽  
Hydrogen Evolution ◽  
Salt Film ◽  
Growth Method

scholarly journals Electrodeposition of Iridium-Nickel Thin Films on Copper Foam: Effects of Loading and Solution Temperature on HER Performance of Electrocatalyst in Alkaline Water

2020 ◽  
Author(s):  
Jianwen Liu ◽  
Wangping Wu ◽  
Xiang Wang
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Hydrogen Evolution ◽  
Electrocatalytic Activity ◽  
Electrochemical Impedance ◽  
Low Cost ◽  
Solution Temperature ◽  
High Deposition Rate ◽  
Hydrogen Energy ◽  
Copper Foam

Developing novel hydrogen evolution reaction (HER) catalysts with high activity, high stability and low cost is of great importance for the applications of hydrogen energy. In this work, iridium-nickel (Ir-Ni) thin films were electrodeposited on a copper foam as electrocatalyst for HER, and electrodeposition mechanism of Ir-Ni film was studied. The morphology and chemical composition of thin films were determined by scanning electron microscopy and energy-dispersive spectroscopy, respectively. The electrocatalytic performances of the films were estimated by linear sweep voltammograms, electrochemical impedance spectroscopy and cyclic voltammetry. The results show that Ir-Ni thin films were attached to the substrate of porous structure and hollow topography. The deposition of Ni was preferable in the electrolyte without the addition of additives, and Ir-Ni thin film was alloyed, resulting in high deposition rate for Ir42Ni58 thin film, and subsequently an increase of Ir content in the thin films of Ir80Ni20 and Ir88Ni12. Ir-Ni thin films with Tafel slopes of 40-49 mV·dec-1 exhibited highly efficient electrocatalytic activity for HER. The electrocatalytic activity of Ir-Ni thin films showed a loading dependence. As the solution temperature raised from 20 oC to 60 oC, the hydrogen evolution performance of Ir-Ni thin films improved. The apparent activation energy value of Ir88Ni12 film was 7.1 kJ·mol-1. Long-term hydrogen evolution tests exhibited excellent electrocatalystic stability in alkaline solution.

Galvanostatically Deposited Ptni Thin-Films As Electrocatalytists for the Hydrogen Evolution Reaction

2020 ◽  
Vol MA2020-01 (37) ◽  
pp. 1535-1535
Author(s):  
Marcelo Videa ◽  
D. Alfonso Crespo-Yapur ◽  
Alejandra Medrano
Keyword(s):  
Thin Films ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction

Hydrogen evolution in hydrogenated microcrystalline silicon carbide thin films

2019 ◽  
Vol 37 (3) ◽  
pp. 031218
Author(s):  
Soumia Nemmour ◽  
Siham Djoumi ◽  
Fatiha Kail ◽  
Pere Roura-Grabulosa ◽  
Pere Roca i Cabarrocas ◽  
...  
Keyword(s):  
Thin Films ◽  
Silicon Carbide ◽  
Hydrogen Evolution ◽  
Microcrystalline Silicon

Phase Control of Ga2O3 Thin Films Grown by Metal-Organic Chemical Vapor Deposition

2019 ◽  
Vol 954 ◽  
pp. 72-76
Author(s):  
Ze Qi Li ◽  
Zi Min Chen ◽  
Wei Qu Chen ◽  
Gang Wang
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Organic Chemical ◽  
Flow Rates ◽  
Growth Method ◽  
Metal Organic ◽  
Step Growth ◽  
Organic Chemical Vapor Deposition

In this paper, Ga2O3 thin films were grown on c-plane sapphire substrates by metal-organic chemical vapor deposition (MOCVD). There was phase transition for samples grown with different flow rates of triethyl-gallium (TEGa) and deionized water (H2O). It is found that ε-Ga2O3 is difficult to coalesce and the phase mixture by β­Ga2O3 takes place if the flow rates of TEGa and H2O are too high. However, by using multiple-step growth method, the film became fully coalesced. High-quality ε-Ga2O3 thin film with atomically flat surface and multilayer morphology was obtained.

Electrochemical Passivation of Homoepitaxial InP (100) Thin Films for Light Induced Hydrogen Evolution: A Synchrotron Radiation Photoelectron Spectroscopy Study

2019 ◽  
Vol 35 (8) ◽  
pp. 141-150 ◽  
Author(s):  
Andres G. Muñoz ◽  
Christian Heine ◽  
Hagen W. Klemm ◽  
Thomas Hannappel ◽  
Nadine Szabo ◽  
...  
Keyword(s):  
Thin Films ◽  
Synchrotron Radiation ◽  
Hydrogen Evolution ◽  
Photoelectron Spectroscopy ◽  
Spectroscopy Study ◽  
Electrochemical Passivation

Growth and Characterization of Chalcopyrite Nanocrystals: Beyond Conventional Thin Films

2007 ◽  
Vol 1012 ◽  
Author(s):  
David Fuertes Marrón ◽  
Sebastian Lehmann ◽  
Justyna Kosk ◽  
Sascha Sadewasser ◽  
Martha Ch. Lux-Steiner
Keyword(s):  
Thin Films ◽  
Material Characterization ◽  
Processing Parameters ◽  
Scanning Probe ◽  
Vapor Liquid Solid ◽  
Embedded Structures ◽  
Solid Substrates ◽  
Growth Method ◽  
Chalcogenide Compound

AbstractA dry method for the growth of highly-structured Cu-containing chalcopyrite material on solid substrates, based on the use of metallic precursors, is described. Nanocrystals, sub-micrometer polycrystalline dots, and macroscopic clusters have be grown, either as isolated units or alternatively as embedded structures in a matrix of a binary chalcogenide compound, by adjusting processing parameters. Vapor-liquid-solid (VLS) induced growth has been used for the growth of chalcopyrite nanowires. Examples of material characterization by scanning probe techniques are shown, demonstrating the suitability of the proposed growth method.

scholarly journals A simple growth method for Nb2O5 films and their optical properties

RSC Advances ◽  
2015 ◽  
Vol 5 (45) ◽  
pp. 36129-36139 ◽  
Author(s):  
J. K. Dash ◽  
L. Chen ◽  
Michael R. Topka ◽  
Peter H. Dinolfo ◽  
L. H. Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Optical Property ◽  
Growth Method ◽  
Sputter Deposited ◽  
Simple Growth

Synthesis of Nb2O5 thin films from sputter deposited Nb films and its optical property.

New Vapor Phase Growth Method of FeN Thin Films Using a Chloride Source

1999 ◽  
Vol 38 (Part 1, No. 10) ◽  
pp. 6031-6033 ◽  
Author(s):  
Naoyuki Takahashi ◽  
Yoshihiro Toda ◽  
Takato Nakamura ◽  
Toshitaka Fujii
Keyword(s):  
Thin Films ◽  
Vapor Phase ◽  
Phase Growth ◽  
Vapor Phase Growth ◽  
Growth Method

In situ fabrication of porous MoS2 thin-films as high-performance catalysts for electrochemical hydrogen evolution

2013 ◽  
Vol 49 (68) ◽  
pp. 7516 ◽  
Author(s):  
Zhiyi Lu ◽  
Haichuan Zhang ◽  
Wei Zhu ◽  
Xiaoyou Yu ◽  
Yun Kuang ◽  
...  
Keyword(s):  
Thin Films ◽  
Hydrogen Evolution ◽  
High Performance ◽  
In Situ Fabrication
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