Synthesis and high electrochemical performance of polyaniline/MnO 2-coated multi-walled carbon nanotube-based hybrid electrodes

Ki Seok Kim; Soo Jin Park

doi:10.1007/s10008-012-1694-7

Synthesis and high electrochemical performance of polyaniline/MnO ₂-coated multi-walled carbon nanotube-based hybrid electrodes

Ki Seok Kim
, Soo Jin Park

Inha University

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

43 Citations (Scopus)

Abstract

Multi-layered electrodes which consist of polyaniline (PANI)/manganese dioxide (MnO ₂)-multi-walled carbon nanotubes (MWNTs) are prepared as the electrode materials for supercapacitors. MnO ₂-MWNTs are made by the in situ direct coating method to deposit MnO ₂ onto MWNTs; the core/shell structure of multi-layered fibrous electrodes can also be obtained by PANI coating onto the MnO ₂-MWNTs. The effect of PANI coating on the electrochemical performance and cyclic stability of MnO ₂-MWNTs is investigated. From the cyclic voltammograms, the PANI/MnO ₂-MWNTs show remarkably enhanced specific capacitance and cycle stability compared to MnO ₂-MWNTs, where the highest specific capacitance (350 F/g) is obtained at a current density of 0.2 A/g for the PANI/MnO ₂-MWNTs as compared to 92 F/g for pristine MWNTs and 306 F/g for MnO ₂-MWNTs. This indicates that the improved electrochemical performance of PANI/MnO ₂-MWNTs is due to the enhanced electrical properties by nano-scale-coated MnO ₂ onto MWNTs and the PANI coating that leads to the increased cycle stability by delaying the dissolution of MnO ₂ during charge/discharge tests.

Original language	English
Pages (from-to)	2751-2758
Number of pages	8
Journal	Journal of Solid State Electrochemistry
Volume	16
Issue number	8
DOIs	https://doi.org/10.1007/s10008-012-1694-7
Publication status	Published - 1 Aug 2012
Externally published	Yes

Keywords

Electrochemical performance
Manganese oxide
Multi-walled carbon nanotubes
Polyaniline

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10.1007/s10008-012-1694-7

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title = "Synthesis and high electrochemical performance of polyaniline/MnO 2-coated multi-walled carbon nanotube-based hybrid electrodes",

abstract = "Multi-layered electrodes which consist of polyaniline (PANI)/manganese dioxide (MnO 2)-multi-walled carbon nanotubes (MWNTs) are prepared as the electrode materials for supercapacitors. MnO 2-MWNTs are made by the in situ direct coating method to deposit MnO 2 onto MWNTs; the core/shell structure of multi-layered fibrous electrodes can also be obtained by PANI coating onto the MnO 2-MWNTs. The effect of PANI coating on the electrochemical performance and cyclic stability of MnO 2-MWNTs is investigated. From the cyclic voltammograms, the PANI/MnO 2-MWNTs show remarkably enhanced specific capacitance and cycle stability compared to MnO 2-MWNTs, where the highest specific capacitance (350 F/g) is obtained at a current density of 0.2 A/g for the PANI/MnO 2-MWNTs as compared to 92 F/g for pristine MWNTs and 306 F/g for MnO 2-MWNTs. This indicates that the improved electrochemical performance of PANI/MnO 2-MWNTs is due to the enhanced electrical properties by nano-scale-coated MnO 2 onto MWNTs and the PANI coating that leads to the increased cycle stability by delaying the dissolution of MnO 2 during charge/discharge tests.",

keywords = "Electrochemical performance, Manganese oxide, Multi-walled carbon nanotubes, Polyaniline",

author = "Kim, \{Ki Seok\} and Park, \{Soo Jin\}",

year = "2012",

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doi = "10.1007/s10008-012-1694-7",

language = "English",

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AU - Park, Soo Jin

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Y1 - 2012/8/1

N2 - Multi-layered electrodes which consist of polyaniline (PANI)/manganese dioxide (MnO 2)-multi-walled carbon nanotubes (MWNTs) are prepared as the electrode materials for supercapacitors. MnO 2-MWNTs are made by the in situ direct coating method to deposit MnO 2 onto MWNTs; the core/shell structure of multi-layered fibrous electrodes can also be obtained by PANI coating onto the MnO 2-MWNTs. The effect of PANI coating on the electrochemical performance and cyclic stability of MnO 2-MWNTs is investigated. From the cyclic voltammograms, the PANI/MnO 2-MWNTs show remarkably enhanced specific capacitance and cycle stability compared to MnO 2-MWNTs, where the highest specific capacitance (350 F/g) is obtained at a current density of 0.2 A/g for the PANI/MnO 2-MWNTs as compared to 92 F/g for pristine MWNTs and 306 F/g for MnO 2-MWNTs. This indicates that the improved electrochemical performance of PANI/MnO 2-MWNTs is due to the enhanced electrical properties by nano-scale-coated MnO 2 onto MWNTs and the PANI coating that leads to the increased cycle stability by delaying the dissolution of MnO 2 during charge/discharge tests.

AB - Multi-layered electrodes which consist of polyaniline (PANI)/manganese dioxide (MnO 2)-multi-walled carbon nanotubes (MWNTs) are prepared as the electrode materials for supercapacitors. MnO 2-MWNTs are made by the in situ direct coating method to deposit MnO 2 onto MWNTs; the core/shell structure of multi-layered fibrous electrodes can also be obtained by PANI coating onto the MnO 2-MWNTs. The effect of PANI coating on the electrochemical performance and cyclic stability of MnO 2-MWNTs is investigated. From the cyclic voltammograms, the PANI/MnO 2-MWNTs show remarkably enhanced specific capacitance and cycle stability compared to MnO 2-MWNTs, where the highest specific capacitance (350 F/g) is obtained at a current density of 0.2 A/g for the PANI/MnO 2-MWNTs as compared to 92 F/g for pristine MWNTs and 306 F/g for MnO 2-MWNTs. This indicates that the improved electrochemical performance of PANI/MnO 2-MWNTs is due to the enhanced electrical properties by nano-scale-coated MnO 2 onto MWNTs and the PANI coating that leads to the increased cycle stability by delaying the dissolution of MnO 2 during charge/discharge tests.

KW - Electrochemical performance

KW - Manganese oxide

KW - Multi-walled carbon nanotubes

KW - Polyaniline

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ER -

Synthesis and high electrochemical performance of polyaniline/MnO ₂-coated multi-walled carbon nanotube-based hybrid electrodes

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Keywords

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