Template-free electrodeposition of net-like Co-Al/oxide structures from a Lewis acidic chloroaluminate room temperature ionic liquid using a potential step method

Jing Ding Fong, Po Yu Chen, I-Wen Sun

Research output: Contribution to journalArticle

Abstract

Without the use of a template, sub-micron scaled cobalt-aluminum (Co-Al) net (mesh) sheets can be obtained via a double-potential step electrodeposition method from a Lewis acidic aluminum chloride/trimethylamine hydrochloride (AlCl3-TMHC) room temperature ionic liquid containing cobalt chloride (CoCl2). During the electrodeposition, the electrode potential was repeatedly stepped between a more negative potential E1 for a time period of t1 and a less negative potential E2 for a time period of t2. The step potentials and step durations controlled the growth of the Co-Al sheet, and therefore, the physical dimensions of the net-like Co-Al. The electrodeposited Co-Al nets were characterized by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM). However, due to the high sensitivity of aluminum and cobalt toward oxygen, the electrodeposited Co-Al micro nets quickly turned into the corresponding metal oxides when exposed to the air.

Original languageEnglish
Pages (from-to)D716-D721
JournalJournal of the Electrochemical Society
Volume165
Issue number14
DOIs
Publication statusPublished - 2018 Jan 1

Fingerprint

Ionic Liquids
Aluminum Oxide
Cobalt
Ionic liquids
Electrodeposition
Aluminum
Oxides
Temperature
Aluminum sheet
Aluminum chloride
High resolution transmission electron microscopy
Metals
Oxygen
Scanning electron microscopy
Electrodes
Air

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

@article{7a1c7b4526f14fcebd54e7d60ee475a6,
title = "Template-free electrodeposition of net-like Co-Al/oxide structures from a Lewis acidic chloroaluminate room temperature ionic liquid using a potential step method",
abstract = "Without the use of a template, sub-micron scaled cobalt-aluminum (Co-Al) net (mesh) sheets can be obtained via a double-potential step electrodeposition method from a Lewis acidic aluminum chloride/trimethylamine hydrochloride (AlCl3-TMHC) room temperature ionic liquid containing cobalt chloride (CoCl2). During the electrodeposition, the electrode potential was repeatedly stepped between a more negative potential E1 for a time period of t1 and a less negative potential E2 for a time period of t2. The step potentials and step durations controlled the growth of the Co-Al sheet, and therefore, the physical dimensions of the net-like Co-Al. The electrodeposited Co-Al nets were characterized by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM). However, due to the high sensitivity of aluminum and cobalt toward oxygen, the electrodeposited Co-Al micro nets quickly turned into the corresponding metal oxides when exposed to the air.",
author = "Fong, {Jing Ding} and Chen, {Po Yu} and I-Wen Sun",
year = "2018",
month = "1",
day = "1",
doi = "10.1149/2.0631814jes",
language = "English",
volume = "165",
pages = "D716--D721",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "14",

}

TY - JOUR

T1 - Template-free electrodeposition of net-like Co-Al/oxide structures from a Lewis acidic chloroaluminate room temperature ionic liquid using a potential step method

AU - Fong, Jing Ding

AU - Chen, Po Yu

AU - Sun, I-Wen

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Without the use of a template, sub-micron scaled cobalt-aluminum (Co-Al) net (mesh) sheets can be obtained via a double-potential step electrodeposition method from a Lewis acidic aluminum chloride/trimethylamine hydrochloride (AlCl3-TMHC) room temperature ionic liquid containing cobalt chloride (CoCl2). During the electrodeposition, the electrode potential was repeatedly stepped between a more negative potential E1 for a time period of t1 and a less negative potential E2 for a time period of t2. The step potentials and step durations controlled the growth of the Co-Al sheet, and therefore, the physical dimensions of the net-like Co-Al. The electrodeposited Co-Al nets were characterized by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM). However, due to the high sensitivity of aluminum and cobalt toward oxygen, the electrodeposited Co-Al micro nets quickly turned into the corresponding metal oxides when exposed to the air.

AB - Without the use of a template, sub-micron scaled cobalt-aluminum (Co-Al) net (mesh) sheets can be obtained via a double-potential step electrodeposition method from a Lewis acidic aluminum chloride/trimethylamine hydrochloride (AlCl3-TMHC) room temperature ionic liquid containing cobalt chloride (CoCl2). During the electrodeposition, the electrode potential was repeatedly stepped between a more negative potential E1 for a time period of t1 and a less negative potential E2 for a time period of t2. The step potentials and step durations controlled the growth of the Co-Al sheet, and therefore, the physical dimensions of the net-like Co-Al. The electrodeposited Co-Al nets were characterized by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM). However, due to the high sensitivity of aluminum and cobalt toward oxygen, the electrodeposited Co-Al micro nets quickly turned into the corresponding metal oxides when exposed to the air.

UR - http://www.scopus.com/inward/record.url?scp=85067617114&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067617114&partnerID=8YFLogxK

U2 - 10.1149/2.0631814jes

DO - 10.1149/2.0631814jes

M3 - Article

AN - SCOPUS:85067617114

VL - 165

SP - D716-D721

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 14

ER -