scholarly journals Experimental Study of Nonequilibrium Electrodeposition of Nanostructures on Copper and Nickel for Photochemical Fuel Cell Application

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Rajesh K. Shanmugam ◽  
Bo J. Gan ◽  
Boya Zhang ◽  
Lusheng Su ◽  
Yong X. Gan

To increase the performance of photochemical fuel cells, nonequilibrium electrodeposition has been performed on Cu and Ni to make photosensitive anodes. Processing parameters including electrolyte concentration, and electrode potential were studied using cyclic voltammetry. Scanning electron microscopy (SEM) and X-ray Spectroscopy (EDS) were performed to understand the formation of the nanostructures during the nonequilibrium deposition of copper fractals. An increase in the deposition rate was observed with the increase in electrolyte concentration (from 0.05 M to 1.0 M). Similar trend was found when the cathode potential was decreased from −0.5 V to −4.5 V. The effect of substrate material was also examined. Porous fractal structures on copper were achieved, while the deposited material showed high density of surface cracks on nickel. The fractal structures deposited on copper electrode with the increased surface area were converted into copper oxide by oxidation in air. Such oxide samples were made into anodes for photochemical fuel cell application. We demonstrated that an increase in the magnitude of open circuit output voltage is associated with the increase in the fractal surface area under the ultraviolet irradiation test conditions. However, the electrodeposited fractals on nickel showed very limited increase in the magnitude of open circuit voltage.

2020 ◽  
Vol 56 (3) ◽  
pp. 3159-3167 ◽  
Author(s):  
Shengrong Zhuo ◽  
Arnaud Gaillard ◽  
Liangcai Xu ◽  
Chen Liu ◽  
Damien Paire ◽  
...  

2017 ◽  
Vol 5 (1) ◽  
pp. 19 ◽  
Author(s):  
Z.R. Ismagilov ◽  
V.B. Fenelonov ◽  
A.V. Krechetova ◽  
A.Yu. Derevyankin ◽  
L.B. Avdeeva ◽  
...  

<p>Adsorption of H<sub>2</sub> and CH<sub>4</sub> was performed at a pressure of to 100 atm on the samples of catalytic filamentous carbon (CFC) and supermicroporous active carbon (SAC) with a surface area ca. 3000 m<sup>2</sup>/g. It is shown that H<sub>2</sub> is better sorbed on the CFC than on the SAC, while the opposite is observed for the CH<sub>4</sub> adsorption. The high values of H<sub>2</sub> sorption on the CFC (to 25-35 mg H<sub>2</sub>/g carbon) with a surface area of 100-300 m<sup>2</sup>/g is explained by hydrogen intercalation between the graphite-like CFC layers. Thus, it is worthwhile investigating the possibility of hydrogen and methane storage on the carbon porous materials.</p>


2006 ◽  
Vol 278 (1-2) ◽  
pp. 35-42 ◽  
Author(s):  
Philippe Bébin ◽  
Magaly Caravanier ◽  
Hervé Galiano

2007 ◽  
Vol 88 (1) ◽  
pp. 3-22 ◽  
Author(s):  
Aidu Qi ◽  
Brant Peppley ◽  
Kunal Karan

2021 ◽  
Vol 29 (6) ◽  
pp. 411-417
Author(s):  
Suba Lakshmi Madaswamy ◽  
Saikh Mohammad Wabaidur ◽  
Mohammad Rizwan Khan ◽  
Soo Chool Lee ◽  
Ragupathy Dhanusuraman

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