Synthesis of petal-like carbon nanocapsule@MnO2 core-shell particles and their application in supercapacitors

Ting Ting Lee; Jing Ru Hong; Wei Chen Lin; Chi Chang Hu; Chi Chang Wu; Yuan Yao Li

doi:10.1149/2.0061410jes

Synthesis of petal-like carbon nanocapsule@MnO₂ core-shell particles and their application in supercapacitors

Ting Ting Lee, Jing Ru Hong, Wei Chen Lin, Chi Chang Hu, Chi Chang Wu, Yuan Yao Li

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

13 Citations (Scopus)

Abstract

Carbon nanocapule (CNC)@MnO₂ core-shell particles are prepared with a reaction of KMnO4 with CNC at 90°C. Birnessite-type MnO₂ nanoflakes are grown on CNC seeds, resulting in CNC@MnO₂ particles with a petal-like structure. The electrochemical characteristics of the prepared materials show that the highest specific capacitance (163 Fg^-1) was obtained with a scan rate of 2 mVs^-1 in 1 M Na₂SO ₄. In addition, the synthesized material has superior cycling stability. The capacitance retains 97.8% of itsinitial value after 5000 cycles with a scan rate of 100 mVs^-1.

Original language	English
Journal	Journal of the Electrochemical Society
Volume	161
Issue number	10
DOIs	https://doi.org/10.1149/2.0061410jes
Publication status	Published - 2014
Externally published	Yes

ASJC Scopus subject areas

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1149/2.0061410jes

Cite this

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title = "Synthesis of petal-like carbon nanocapsule@MnO2 core-shell particles and their application in supercapacitors",

abstract = "Carbon nanocapule (CNC)@MnO2 core-shell particles are prepared with a reaction of KMnO4 with CNC at 90°C. Birnessite-type MnO2 nanoflakes are grown on CNC seeds, resulting in CNC@MnO2 particles with a petal-like structure. The electrochemical characteristics of the prepared materials show that the highest specific capacitance (163 Fg-1) was obtained with a scan rate of 2 mVs-1 in 1 M Na2SO 4. In addition, the synthesized material has superior cycling stability. The capacitance retains 97.8% of itsinitial value after 5000 cycles with a scan rate of 100 mVs-1.",

author = "Lee, {Ting Ting} and Hong, {Jing Ru} and Lin, {Wei Chen} and Hu, {Chi Chang} and Wu, {Chi Chang} and Li, {Yuan Yao}",

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T1 - Synthesis of petal-like carbon nanocapsule@MnO2 core-shell particles and their application in supercapacitors

AU - Lee, Ting Ting

AU - Hong, Jing Ru

AU - Lin, Wei Chen

AU - Hu, Chi Chang

AU - Wu, Chi Chang

AU - Li, Yuan Yao

PY - 2014

Y1 - 2014

N2 - Carbon nanocapule (CNC)@MnO2 core-shell particles are prepared with a reaction of KMnO4 with CNC at 90°C. Birnessite-type MnO2 nanoflakes are grown on CNC seeds, resulting in CNC@MnO2 particles with a petal-like structure. The electrochemical characteristics of the prepared materials show that the highest specific capacitance (163 Fg-1) was obtained with a scan rate of 2 mVs-1 in 1 M Na2SO 4. In addition, the synthesized material has superior cycling stability. The capacitance retains 97.8% of itsinitial value after 5000 cycles with a scan rate of 100 mVs-1.

AB - Carbon nanocapule (CNC)@MnO2 core-shell particles are prepared with a reaction of KMnO4 with CNC at 90°C. Birnessite-type MnO2 nanoflakes are grown on CNC seeds, resulting in CNC@MnO2 particles with a petal-like structure. The electrochemical characteristics of the prepared materials show that the highest specific capacitance (163 Fg-1) was obtained with a scan rate of 2 mVs-1 in 1 M Na2SO 4. In addition, the synthesized material has superior cycling stability. The capacitance retains 97.8% of itsinitial value after 5000 cycles with a scan rate of 100 mVs-1.

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