Carbon Nanotubes Grown on Nanoporous Alumina Templates/Aluminum Foil for Electrodes of Aluminum Electrolytic Capacitors

2010 ◽  
Vol 157 (2) ◽  
pp. A237 ◽  
Author(s):  
Chuen-Chang Lin ◽  
Ching-Long Yang
Keyword(s):  
Carbon Nanotubes ◽  
Aluminum Foil ◽  
Nanoporous Alumina ◽  
Electrolytic Capacitors ◽  
Nanoporous Alumina Templates ◽  
Aluminum Electrolytic Capacitors

scholarly journals Effects of Carbon Nanotubes Acid Treated or Annealed and Manganese Nitrate Thermally Decomposed on Capacitive Characteristics of Electrochemical Capacitors

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Chuen-Chang Lin ◽  
Chung-Lun Kuo
Keyword(s):  
Carbon Nanotubes ◽  
Specific Capacitance ◽  
Manganese Oxides ◽  
Chemical Vapor ◽  
Aluminum Foil ◽  
Nanoporous Alumina ◽  
Manganese Nitrate ◽  
Different Temperatures ◽  
Nanoporous Alumina Templates ◽  
Better Than

Carbon nanotubes (CNTs) directly grown on aluminum foil or nanoporous alumina templates by chemical vapor deposition are treated with acid for different times or annealed at different temperatures. Then, the CNTs are immersed into a manganese nitrate aqueous solution and then manganese oxides are formed by thermally decomposing the manganese nitrate at different temperatures. The longer the time that the CNTs are treated with the acid, the slower the decreasing rate of the specific capacitance. Also, the higher the annealing temperature of the CNTs, the slower the decreasing rate of the specific capacitance. Furthermore, the electrochemical stability for thermally decomposing manganese nitrate at 400°C is better than that at 200 or 300°C and the operational stability with nanoporous alumina templates as a substrate is better than that with Al foil as a substrate.

Electrochemical Etching of Aluminum Foil for Electrolytic Capacitors

2005 ◽  
Vol 475-479 ◽  
pp. 385-388 ◽  
Author(s):  
C.-S. Chi ◽  
Y. Jeong ◽  
S.S. Kim ◽  
J.H. Lee ◽  
H.J. Oh
Keyword(s):  
Sulfuric Acid ◽  
Electrochemical Impedance Spectroscopy ◽  
Surface Area ◽  
Chloride Solution ◽  
Electrochemical Impedance ◽  
Electrochemical Etching ◽  
Aluminum Foil ◽  
Electrolytic Capacitors ◽  
Etched Surface ◽  
Aluminum Electrolytic Capacitors

The increase of capacitance on dielectric layer is associated with enlargement of etched surface area of electrodes for aluminum electrolytic capacitors. Etched tunnels extending along [100] directions are formed by crystallographic dissolution of aluminum in a chloride solution. This study has been focused primarily on the effects of addition of inhibitors to hydrochloric acid solution on the increase of the surface area by Electrochemical Impedance Spectroscopy (EIS). The addition of 3 % ethylene glycol was more effective for the enlargement of the surface area comparing with those of 1M sulfuric acid and no additive. And it was observed by TEM that the tunnels were grown straight and parallel to [100] directions.

Symmetric Pulsed Anodizing of Aluminum Foil for Aluminum Electrolytic Capacitors

2020 ◽  
Vol 3 (2) ◽  
pp. 1804-1810
Author(s):  
Xiang Li ◽  
Baige Lin ◽  
Lilong Xiong ◽  
Xianfeng Du
Keyword(s):  
Aluminum Foil ◽  
Electrolytic Capacitors ◽  
Aluminum Electrolytic Capacitors

Polymer nanopillars using self-ordered nanoporous alumina templates

2009 ◽  
Vol 6 (7) ◽  
pp. 1584-1586 ◽  
Author(s):  
R. Palacios ◽  
P. Formentín ◽  
J. Ferré-Borrull ◽  
J. Pallarés ◽  
L. F. Marsal
Keyword(s):  
Nanoporous Alumina ◽  
Nanoporous Alumina Templates

EDLC characteristics of CNTs grown on nanoporous alumina templates

2004 ◽  
Vol 50 (2-3) ◽  
pp. 857-862 ◽  
Author(s):  
Mi Jung ◽  
Hyun-Gi Kim ◽  
Jae-Kyoung Lee ◽  
Oh-Shim Joo ◽  
Sun-il Mho
Keyword(s):  
Nanoporous Alumina ◽  
Nanoporous Alumina Templates
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