Pseudocapacitive performance of hybrid manganese oxide films with multiwalled-CNT additions

C. K. Lin; C. H. Wu; C. Y. Tsai; C. Y. Chen; S. C. Wang

doi:10.1016/j.surfcoat.2010.07.054

Pseudocapacitive performance of hybrid manganese oxide films with multiwalled-CNT additions

C. K. Lin, C. H. Wu, C. Y. Tsai, C. Y. Chen, S. C. Wang

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

19 Citations (Scopus)

Abstract

In the present study, hybrid manganese oxide films with additions of multiwalled carbon nanotubes (MWCNTs) were prepared by sol-gel process. Manganese acetate was used as the precursors and MWCNTs were added during the process. The effects of MWCNT addition and post heat treatment on the material characteristics and pseudocapacitive performance of the hybrid MWCNT/MnO_x films were investigated. Experimental results showed that manganese oxide was composed of Mn₃O₄ (minor) and Mn₂O₃ (major) phases after heat treatment. MWCNTs served as the template for the growth of manganese oxide films. Among the hybrid films prepared in the present study, manganese oxide films with 0.05wt.% MWCNT addition heat treated at 350°C exhibited the best electrochemical performance. The maximum specific capacitance was 340.3F/g and retained 280.8F/g (82.5%) after 1000 CV tests. With the addition of MWCNTs, not only the specific capacitance increased but also the reliability improved.

Original language	English
Pages (from-to)	1595-1598
Number of pages	4
Journal	Surface and Coatings Technology
Volume	205
Issue number	5
DOIs	https://doi.org/10.1016/j.surfcoat.2010.07.054
Publication status	Published - Nov 25 2010
Externally published	Yes

Keywords

MWCNTs
Manganese oxide
Pseudocapacitance
Sol-gel process
Supercapacitor

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry
Surfaces, Coatings and Films
Surfaces and Interfaces

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10.1016/j.surfcoat.2010.07.054

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title = "Pseudocapacitive performance of hybrid manganese oxide films with multiwalled-CNT additions",

abstract = "In the present study, hybrid manganese oxide films with additions of multiwalled carbon nanotubes (MWCNTs) were prepared by sol-gel process. Manganese acetate was used as the precursors and MWCNTs were added during the process. The effects of MWCNT addition and post heat treatment on the material characteristics and pseudocapacitive performance of the hybrid MWCNT/MnOx films were investigated. Experimental results showed that manganese oxide was composed of Mn3O4 (minor) and Mn2O3 (major) phases after heat treatment. MWCNTs served as the template for the growth of manganese oxide films. Among the hybrid films prepared in the present study, manganese oxide films with 0.05wt.% MWCNT addition heat treated at 350°C exhibited the best electrochemical performance. The maximum specific capacitance was 340.3F/g and retained 280.8F/g (82.5%) after 1000 CV tests. With the addition of MWCNTs, not only the specific capacitance increased but also the reliability improved.",

keywords = "MWCNTs, Manganese oxide, Pseudocapacitance, Sol-gel process, Supercapacitor",

author = "Lin, {C. K.} and Wu, {C. H.} and Tsai, {C. Y.} and Chen, {C. Y.} and Wang, {S. C.}",

year = "2010",

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doi = "10.1016/j.surfcoat.2010.07.054",

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T1 - Pseudocapacitive performance of hybrid manganese oxide films with multiwalled-CNT additions

AU - Lin, C. K.

AU - Wu, C. H.

AU - Tsai, C. Y.

AU - Chen, C. Y.

AU - Wang, S. C.

PY - 2010/11/25

Y1 - 2010/11/25

N2 - In the present study, hybrid manganese oxide films with additions of multiwalled carbon nanotubes (MWCNTs) were prepared by sol-gel process. Manganese acetate was used as the precursors and MWCNTs were added during the process. The effects of MWCNT addition and post heat treatment on the material characteristics and pseudocapacitive performance of the hybrid MWCNT/MnOx films were investigated. Experimental results showed that manganese oxide was composed of Mn3O4 (minor) and Mn2O3 (major) phases after heat treatment. MWCNTs served as the template for the growth of manganese oxide films. Among the hybrid films prepared in the present study, manganese oxide films with 0.05wt.% MWCNT addition heat treated at 350°C exhibited the best electrochemical performance. The maximum specific capacitance was 340.3F/g and retained 280.8F/g (82.5%) after 1000 CV tests. With the addition of MWCNTs, not only the specific capacitance increased but also the reliability improved.

AB - In the present study, hybrid manganese oxide films with additions of multiwalled carbon nanotubes (MWCNTs) were prepared by sol-gel process. Manganese acetate was used as the precursors and MWCNTs were added during the process. The effects of MWCNT addition and post heat treatment on the material characteristics and pseudocapacitive performance of the hybrid MWCNT/MnOx films were investigated. Experimental results showed that manganese oxide was composed of Mn3O4 (minor) and Mn2O3 (major) phases after heat treatment. MWCNTs served as the template for the growth of manganese oxide films. Among the hybrid films prepared in the present study, manganese oxide films with 0.05wt.% MWCNT addition heat treated at 350°C exhibited the best electrochemical performance. The maximum specific capacitance was 340.3F/g and retained 280.8F/g (82.5%) after 1000 CV tests. With the addition of MWCNTs, not only the specific capacitance increased but also the reliability improved.

KW - MWCNTs

KW - Manganese oxide

KW - Pseudocapacitance

KW - Sol-gel process

KW - Supercapacitor

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Pseudocapacitive performance of hybrid manganese oxide films with multiwalled-CNT additions

Abstract

Keywords

ASJC Scopus subject areas

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