Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor Electrode
In this paper the synthesis of self-organized Titania nanotubes (TNTs) by a facile potentiostatic anodization in a glycerol-based electrolyte is reported. The optimized TNTs were subsequently reduced through a cathodic reduction process to enhance its capacitive performance. FESEM and XRD were used...
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doaj-695c26157cbb4d209f7ffed02480482b2020-11-25T02:51:54ZengMDPI AGEnergies1996-10732020-06-01132767276710.3390/en13112767Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor ElectrodeMuhammad Muhammad Muzakir0Zulkarnain Zainal1Hong Ngee Lim2Abdul Halim Abdullah3Noor Nazihah Bahrudin4Mahanim Sarif@Mohd Ali5Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400, MalaysiaMaterials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang, Selangor 43400, MalaysiaIn this paper the synthesis of self-organized Titania nanotubes (TNTs) by a facile potentiostatic anodization in a glycerol-based electrolyte is reported. The optimized TNTs were subsequently reduced through a cathodic reduction process to enhance its capacitive performance. FESEM and XRD were used to characterize the morphology and crystal structure of the synthesized samples. XPS analysis confirmed the reduction of Ti<sup>4+</sup> to Ti<sup>3+</sup> ions in the reduced Titania nanotubes (R-TNTs). The tube diameter and separation between the tubes were greatly influenced by the applied voltage. TNTs synthesized at voltage of 30 V for 60 min exhibited 86 nm and 1.1 µm of tube diameter and length, respectively and showed high specific capacitance of 0.33 mF cm<sup>−2</sup> at current density of 0.02 mA cm<sup>−2</sup>. After reduction at 5 V for 30 s, the specific capacitance increased by about seven times (2.28 mF cm<sup>−2</sup>) at 0.5 mA cm<sup>−2</sup> and recorded about 86% capacitance retention after 1000 continuous cycling at 0.2 mA cm<sup>−2</sup>, as compared to TNTs, retained about 61% at 0.01 mA cm<sup>−2</sup>. The charge transfer resistance drastically reduced from 6.2 Ω for TNTs to 0.55 Ω for R-TNTs, indicating an improvement in the transfer of electrons and ions across the electrode–electrolyte interface.https://www.mdpi.com/1996-1073/13/11/2767anodizationtitania nanotubesglycerolelectrochemical capacitancemorphologycathodic reduction |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Muhammad Muhammad Muzakir Zulkarnain Zainal Hong Ngee Lim Abdul Halim Abdullah Noor Nazihah Bahrudin Mahanim Sarif@Mohd Ali |
spellingShingle |
Muhammad Muhammad Muzakir Zulkarnain Zainal Hong Ngee Lim Abdul Halim Abdullah Noor Nazihah Bahrudin Mahanim Sarif@Mohd Ali Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor Electrode Energies anodization titania nanotubes glycerol electrochemical capacitance morphology cathodic reduction |
author_facet |
Muhammad Muhammad Muzakir Zulkarnain Zainal Hong Ngee Lim Abdul Halim Abdullah Noor Nazihah Bahrudin Mahanim Sarif@Mohd Ali |
author_sort |
Muhammad Muhammad Muzakir |
title |
Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor Electrode |
title_short |
Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor Electrode |
title_full |
Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor Electrode |
title_fullStr |
Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor Electrode |
title_full_unstemmed |
Electrochemically Reduced Titania Nanotube Synthesized from Glycerol-Based Electrolyte as Supercapacitor Electrode |
title_sort |
electrochemically reduced titania nanotube synthesized from glycerol-based electrolyte as supercapacitor electrode |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2020-06-01 |
description |
In this paper the synthesis of self-organized Titania nanotubes (TNTs) by a facile potentiostatic anodization in a glycerol-based electrolyte is reported. The optimized TNTs were subsequently reduced through a cathodic reduction process to enhance its capacitive performance. FESEM and XRD were used to characterize the morphology and crystal structure of the synthesized samples. XPS analysis confirmed the reduction of Ti<sup>4+</sup> to Ti<sup>3+</sup> ions in the reduced Titania nanotubes (R-TNTs). The tube diameter and separation between the tubes were greatly influenced by the applied voltage. TNTs synthesized at voltage of 30 V for 60 min exhibited 86 nm and 1.1 µm of tube diameter and length, respectively and showed high specific capacitance of 0.33 mF cm<sup>−2</sup> at current density of 0.02 mA cm<sup>−2</sup>. After reduction at 5 V for 30 s, the specific capacitance increased by about seven times (2.28 mF cm<sup>−2</sup>) at 0.5 mA cm<sup>−2</sup> and recorded about 86% capacitance retention after 1000 continuous cycling at 0.2 mA cm<sup>−2</sup>, as compared to TNTs, retained about 61% at 0.01 mA cm<sup>−2</sup>. The charge transfer resistance drastically reduced from 6.2 Ω for TNTs to 0.55 Ω for R-TNTs, indicating an improvement in the transfer of electrons and ions across the electrode–electrolyte interface. |
topic |
anodization titania nanotubes glycerol electrochemical capacitance morphology cathodic reduction |
url |
https://www.mdpi.com/1996-1073/13/11/2767 |
work_keys_str_mv |
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