One-pot synthesis of functionalized few-walled carbon nanotube/MnO 2 composite for high performance electrochemical supercapacitors

Yingwen Cheng; Hongbo Zhang; Songtao Lu; Shutong Zhan; Chakrapani Varanasi; Jie Liu

doi:10.1002/9781118585160.ch25

One-pot synthesis of functionalized few-walled carbon nanotube/MnO ₂ composite for high performance electrochemical supercapacitors

Yingwen Cheng
, Hongbo Zhang
, Songtao Lu
, Shutong Zhan
, Chakrapani Varanasi
, Jie Liu^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Duke University
United States Army Research Office

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In this paper, we described a one-pot approach to synthesize functionalized few-walled carbon nanotubes (fFWNTs)/MnO₂ composite for high performance electrochemical supercapacitor by mixing raw FWNTs with KMnO ₄ under acidic condition. This approach combines the purification and functionalization of FWNTs and the synthesis of fFWNTs/MnO₂ composite in one step. The electrochemical performance of the composite was evaluated by cyclic voltammetry and galvanostatic charge-discharge techniques. The results indicate that the composite with 51wt% of MnO₂ has the high specific capacitance of 253 F/g (496 F/g based on MnO₂) at 10 mV/s and 176 F/g at the high scan rate of 500 mV/s (66% retention), indicating improved specific capacitance and excellent rate capability. Furthermore, the composite show superior electrochemical stability over 2000 charge/discharge cycles at the current density of 5 A/g. Therefore, this simplified one-pot approach of making the fFWNT/MnO₂ composite show high promises towards practical application in supercapacitors.

Original language	English
Title of host publication	Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference
Publisher	American Ceramic Society
Pages	271-281
Number of pages	11
ISBN (Print)	9781118580981
DOIs	https://doi.org/10.1002/9781118585160.ch25
State	Published - 2013
Event	2nd Materials Challenges in Alternative and Renewable Energy, Energy 2012 - Clearwater, FL, United States Duration: 26 Feb 2012 → 1 Mar 2012

Publication series

Name	Ceramic Transactions
Volume	239
ISSN (Print)	1042-1122

Conference

Conference	2nd Materials Challenges in Alternative and Renewable Energy, Energy 2012
Country/Territory	United States
City	Clearwater, FL
Period	26/02/12 → 1/03/12

Access to Document

10.1002/9781118585160.ch25

Cite this

Cheng, Y., Zhang, H., Lu, S., Zhan, S., Varanasi, C., & Liu, J. (2013). One-pot synthesis of functionalized few-walled carbon nanotube/MnO ₂ composite for high performance electrochemical supercapacitors. In Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference (pp. 271-281). (Ceramic Transactions; Vol. 239). American Ceramic Society. https://doi.org/10.1002/9781118585160.ch25

Cheng, Yingwen ; Zhang, Hongbo ; Lu, Songtao et al. / One-pot synthesis of functionalized few-walled carbon nanotube/MnO ₂ composite for high performance electrochemical supercapacitors. Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference. American Ceramic Society, 2013. pp. 271-281 (Ceramic Transactions).

@inproceedings{759e5db3aa6e46d8a5c9b3c99c17f531,

title = "One-pot synthesis of functionalized few-walled carbon nanotube/MnO 2 composite for high performance electrochemical supercapacitors",

abstract = "In this paper, we described a one-pot approach to synthesize functionalized few-walled carbon nanotubes (fFWNTs)/MnO2 composite for high performance electrochemical supercapacitor by mixing raw FWNTs with KMnO 4 under acidic condition. This approach combines the purification and functionalization of FWNTs and the synthesis of fFWNTs/MnO2 composite in one step. The electrochemical performance of the composite was evaluated by cyclic voltammetry and galvanostatic charge-discharge techniques. The results indicate that the composite with 51wt\% of MnO2 has the high specific capacitance of 253 F/g (496 F/g based on MnO2) at 10 mV/s and 176 F/g at the high scan rate of 500 mV/s (66\% retention), indicating improved specific capacitance and excellent rate capability. Furthermore, the composite show superior electrochemical stability over 2000 charge/discharge cycles at the current density of 5 A/g. Therefore, this simplified one-pot approach of making the fFWNT/MnO2 composite show high promises towards practical application in supercapacitors.",

author = "Yingwen Cheng and Hongbo Zhang and Songtao Lu and Shutong Zhan and Chakrapani Varanasi and Jie Liu",

year = "2013",

doi = "10.1002/9781118585160.ch25",

language = "英语",

isbn = "9781118580981",

series = "Ceramic Transactions",

publisher = "American Ceramic Society",

pages = "271--281",

booktitle = "Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference",

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note = "2nd Materials Challenges in Alternative and Renewable Energy, Energy 2012 ; Conference date: 26-02-2012 Through 01-03-2012",

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Cheng, Y, Zhang, H, Lu, S, Zhan, S, Varanasi, C & Liu, J 2013, One-pot synthesis of functionalized few-walled carbon nanotube/MnO ₂ composite for high performance electrochemical supercapacitors. in Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference. Ceramic Transactions, vol. 239, American Ceramic Society, pp. 271-281, 2nd Materials Challenges in Alternative and Renewable Energy, Energy 2012, Clearwater, FL, United States, 26/02/12. https://doi.org/10.1002/9781118585160.ch25

One-pot synthesis of functionalized few-walled carbon nanotube/MnO ₂ composite for high performance electrochemical supercapacitors. / Cheng, Yingwen; Zhang, Hongbo; Lu, Songtao et al.
Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference. American Ceramic Society, 2013. p. 271-281 (Ceramic Transactions; Vol. 239).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - One-pot synthesis of functionalized few-walled carbon nanotube/MnO 2 composite for high performance electrochemical supercapacitors

AU - Cheng, Yingwen

AU - Zhang, Hongbo

AU - Lu, Songtao

AU - Zhan, Shutong

AU - Varanasi, Chakrapani

AU - Liu, Jie

PY - 2013

Y1 - 2013

N2 - In this paper, we described a one-pot approach to synthesize functionalized few-walled carbon nanotubes (fFWNTs)/MnO2 composite for high performance electrochemical supercapacitor by mixing raw FWNTs with KMnO 4 under acidic condition. This approach combines the purification and functionalization of FWNTs and the synthesis of fFWNTs/MnO2 composite in one step. The electrochemical performance of the composite was evaluated by cyclic voltammetry and galvanostatic charge-discharge techniques. The results indicate that the composite with 51wt% of MnO2 has the high specific capacitance of 253 F/g (496 F/g based on MnO2) at 10 mV/s and 176 F/g at the high scan rate of 500 mV/s (66% retention), indicating improved specific capacitance and excellent rate capability. Furthermore, the composite show superior electrochemical stability over 2000 charge/discharge cycles at the current density of 5 A/g. Therefore, this simplified one-pot approach of making the fFWNT/MnO2 composite show high promises towards practical application in supercapacitors.

AB - In this paper, we described a one-pot approach to synthesize functionalized few-walled carbon nanotubes (fFWNTs)/MnO2 composite for high performance electrochemical supercapacitor by mixing raw FWNTs with KMnO 4 under acidic condition. This approach combines the purification and functionalization of FWNTs and the synthesis of fFWNTs/MnO2 composite in one step. The electrochemical performance of the composite was evaluated by cyclic voltammetry and galvanostatic charge-discharge techniques. The results indicate that the composite with 51wt% of MnO2 has the high specific capacitance of 253 F/g (496 F/g based on MnO2) at 10 mV/s and 176 F/g at the high scan rate of 500 mV/s (66% retention), indicating improved specific capacitance and excellent rate capability. Furthermore, the composite show superior electrochemical stability over 2000 charge/discharge cycles at the current density of 5 A/g. Therefore, this simplified one-pot approach of making the fFWNT/MnO2 composite show high promises towards practical application in supercapacitors.

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SN - 9781118580981

T3 - Ceramic Transactions

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EP - 281

BT - Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference

PB - American Ceramic Society

T2 - 2nd Materials Challenges in Alternative and Renewable Energy, Energy 2012

Y2 - 26 February 2012 through 1 March 2012

ER -

Cheng Y, Zhang H, Lu S, Zhan S, Varanasi C, Liu J. One-pot synthesis of functionalized few-walled carbon nanotube/MnO ₂ composite for high performance electrochemical supercapacitors. In Materials Challenges in Alternative and Renewable Energy II - A Collection of Papers Presented at the Materials Challenges in Alternative and Renewable Energy Conference. American Ceramic Society. 2013. p. 271-281. (Ceramic Transactions). doi: 10.1002/9781118585160.ch25