Nanostructured Co3O4/nitrogen doped carbon nanotube composites for high-performance supercapacitors

Sivalingam Ramesh; Yuvaraj Haldorai; Arumugam Sivasamy; Heung Soo Kim

doi:10.1016/j.matlet.2017.06.110

Nanostructured Co₃O₄/nitrogen doped carbon nanotube composites for high-performance supercapacitors

Sivalingam Ramesh
, Yuvaraj Haldorai
, Arumugam Sivasamy
, Heung Soo Kim

Department of Mechanical, Robotics and Energy Engineering

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

In this study, a nanostructured cobalt oxide/nitrogen doped multiwall carbon nanotube (N-MWCNT/Co₃O₄) composite was synthesized by thermal decomposition process in the presence of aqueous ammonia and urea. Transmission electron microscopy (TEM) confirmed that the nanostructured Co₃O₄ nanoparticles were densely decorated over the N-MWCNT surface. The supercapacitive properties of the composite electrode were studied in aqueous potassium hydroxide (KOH). The composite showed high specific capacitance (406 F g⁻¹ at a current density of 2 A g⁻¹) and excellent cycle stability (93% capacitance retention after 10,000 cycles), demonstrating its potential application in high-performance supercapacitors.

Original language	English
Pages (from-to)	39-43
Number of pages	5
Journal	Materials Letters
Volume	206
DOIs	https://doi.org/10.1016/j.matlet.2017.06.110
State	Published - 1 Nov 2017

Keywords

Cobalt oxide
Composite
N-doped MWCNT
Supercapacitors

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10.1016/j.matlet.2017.06.110

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title = "Nanostructured Co3O4/nitrogen doped carbon nanotube composites for high-performance supercapacitors",

abstract = "In this study, a nanostructured cobalt oxide/nitrogen doped multiwall carbon nanotube (N-MWCNT/Co3O4) composite was synthesized by thermal decomposition process in the presence of aqueous ammonia and urea. Transmission electron microscopy (TEM) confirmed that the nanostructured Co3O4 nanoparticles were densely decorated over the N-MWCNT surface. The supercapacitive properties of the composite electrode were studied in aqueous potassium hydroxide (KOH). The composite showed high specific capacitance (406 F g−1 at a current density of 2 A g−1) and excellent cycle stability (93\% capacitance retention after 10,000 cycles), demonstrating its potential application in high-performance supercapacitors.",

keywords = "Cobalt oxide, Composite, N-doped MWCNT, Supercapacitors",

author = "Sivalingam Ramesh and Yuvaraj Haldorai and Arumugam Sivasamy and Kim, \{Heung Soo\}",

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doi = "10.1016/j.matlet.2017.06.110",

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T1 - Nanostructured Co3O4/nitrogen doped carbon nanotube composites for high-performance supercapacitors

AU - Ramesh, Sivalingam

AU - Haldorai, Yuvaraj

AU - Sivasamy, Arumugam

AU - Kim, Heung Soo

PY - 2017/11/1

Y1 - 2017/11/1

N2 - In this study, a nanostructured cobalt oxide/nitrogen doped multiwall carbon nanotube (N-MWCNT/Co3O4) composite was synthesized by thermal decomposition process in the presence of aqueous ammonia and urea. Transmission electron microscopy (TEM) confirmed that the nanostructured Co3O4 nanoparticles were densely decorated over the N-MWCNT surface. The supercapacitive properties of the composite electrode were studied in aqueous potassium hydroxide (KOH). The composite showed high specific capacitance (406 F g−1 at a current density of 2 A g−1) and excellent cycle stability (93% capacitance retention after 10,000 cycles), demonstrating its potential application in high-performance supercapacitors.

AB - In this study, a nanostructured cobalt oxide/nitrogen doped multiwall carbon nanotube (N-MWCNT/Co3O4) composite was synthesized by thermal decomposition process in the presence of aqueous ammonia and urea. Transmission electron microscopy (TEM) confirmed that the nanostructured Co3O4 nanoparticles were densely decorated over the N-MWCNT surface. The supercapacitive properties of the composite electrode were studied in aqueous potassium hydroxide (KOH). The composite showed high specific capacitance (406 F g−1 at a current density of 2 A g−1) and excellent cycle stability (93% capacitance retention after 10,000 cycles), demonstrating its potential application in high-performance supercapacitors.

KW - Cobalt oxide

KW - Composite

KW - N-doped MWCNT

KW - Supercapacitors

UR - https://www.scopus.com/pages/publications/85021405863

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DO - 10.1016/j.matlet.2017.06.110

M3 - Article

AN - SCOPUS:85021405863

SN - 0167-577X

VL - 206

SP - 39

EP - 43

JO - Materials Letters

JF - Materials Letters

ER -

Nanostructured Co₃O₄/nitrogen doped carbon nanotube composites for high-performance supercapacitors

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Keywords

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