Incorporation of conductive polymer into soft carbon electrodes for lithium ion capacitors

Young Geun Lim; Min Sik Park; Ki Jae Kim; Kyu Sung Jung; Jung Ho Kim; Mohammed Shahabuddin; Dongjin Byun; Ji Sang Yu

doi:10.1016/j.jpowsour.2015.08.083

Incorporation of conductive polymer into soft carbon electrodes for lithium ion capacitors

Young Geun Lim, Min Sik Park, Ki Jae Kim, Kyu Sung Jung, Jung Ho Kim, Mohammed Shahabuddin, Dongjin Byun, Ji Sang Yu

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

27 Citations (Scopus)

Abstract

The positive effects of incorporating electrically conductive poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT-PSS) into the negative electrode (NE) of a lithium ion capacitor (LIC) is investigated. The binding material of the NE, styrene-butadiene rubber (SBR), is partially substituted by conductive PEDOT-PSS. The soft carbon NE with 1.0 wt% PEDOT-PSS exhibits enhanced capacity retention of 64% at a current density of 5 C by lowering its electrical and electrochemical charge transfer resistance. The rate capability increased with increasing amounts of PEDOT-PSS, with no variation in the Li⁺ diffusivity. This improved electrochemical performance of the NE is also reflected in the LIC full-cell configuration. An LIC employing a 1.0 wt% PEDOT-PSS NE delivers 6.6 F at a high current density of 100 C, which is higher than the 6.0 F measured for the LIC with a bare NE. Moreover, the LIC with the 1.0 wt% PEDOT-PSS NE retains 85% of its initial capacitance even after 5000 cycles. These results are mainly attributed to the favourable electrical network formed by the incorporation of PEDOT-PSS into the NE. Thus, we believe that the incorporation of conductive PEDOT-PSS is a viable approach for obtaining high-power LICs.

Original language	English
Article number	21631
Pages (from-to)	49-56
Number of pages	8
Journal	Journal of Power Sources
Volume	299
DOIs	https://doi.org/10.1016/j.jpowsour.2015.08.083
Publication status	Published - 2015 Dec 20

Bibliographical note

Funding Information:
We also acknowledge the finacial support from the R&D Convergence Program (National Resarch Council of Science & Technology, Project No. CAP-14-2-KITECH) of Republic of Korea.

Funding Information:
This work was supported by the Energy Efficiency & Resources Core Technology Program [ 20132020102020 and 20132010101890 ] of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), which granted financial resources from the Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea .

Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

Conductive polymer
Lithium ion capacitor
Negative electrode
Soft carbon

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

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10.1016/j.jpowsour.2015.08.083

Cite this

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title = "Incorporation of conductive polymer into soft carbon electrodes for lithium ion capacitors",

abstract = "The positive effects of incorporating electrically conductive poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT-PSS) into the negative electrode (NE) of a lithium ion capacitor (LIC) is investigated. The binding material of the NE, styrene-butadiene rubber (SBR), is partially substituted by conductive PEDOT-PSS. The soft carbon NE with 1.0 wt% PEDOT-PSS exhibits enhanced capacity retention of 64% at a current density of 5 C by lowering its electrical and electrochemical charge transfer resistance. The rate capability increased with increasing amounts of PEDOT-PSS, with no variation in the Li+ diffusivity. This improved electrochemical performance of the NE is also reflected in the LIC full-cell configuration. An LIC employing a 1.0 wt% PEDOT-PSS NE delivers 6.6 F at a high current density of 100 C, which is higher than the 6.0 F measured for the LIC with a bare NE. Moreover, the LIC with the 1.0 wt% PEDOT-PSS NE retains 85% of its initial capacitance even after 5000 cycles. These results are mainly attributed to the favourable electrical network formed by the incorporation of PEDOT-PSS into the NE. Thus, we believe that the incorporation of conductive PEDOT-PSS is a viable approach for obtaining high-power LICs.",

keywords = "Conductive polymer, Lithium ion capacitor, Negative electrode, Soft carbon",

author = "Lim, {Young Geun} and Park, {Min Sik} and Kim, {Ki Jae} and Jung, {Kyu Sung} and Kim, {Jung Ho} and Mohammed Shahabuddin and Dongjin Byun and Yu, {Ji Sang}",

note = "Funding Information: We also acknowledge the finacial support from the R&D Convergence Program (National Resarch Council of Science & Technology, Project No. CAP-14-2-KITECH) of Republic of Korea. Funding Information: This work was supported by the Energy Efficiency & Resources Core Technology Program [ 20132020102020 and 20132010101890 ] of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), which granted financial resources from the Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea . Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

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AU - Lim, Young Geun

AU - Park, Min Sik

AU - Kim, Ki Jae

AU - Jung, Kyu Sung

AU - Kim, Jung Ho

AU - Shahabuddin, Mohammed

AU - Byun, Dongjin

AU - Yu, Ji Sang

N1 - Funding Information: We also acknowledge the finacial support from the R&D Convergence Program (National Resarch Council of Science & Technology, Project No. CAP-14-2-KITECH) of Republic of Korea. Funding Information: This work was supported by the Energy Efficiency & Resources Core Technology Program [ 20132020102020 and 20132010101890 ] of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), which granted financial resources from the Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea . Publisher Copyright: © 2015 Elsevier B.V.

PY - 2015/12/20

Y1 - 2015/12/20

N2 - The positive effects of incorporating electrically conductive poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT-PSS) into the negative electrode (NE) of a lithium ion capacitor (LIC) is investigated. The binding material of the NE, styrene-butadiene rubber (SBR), is partially substituted by conductive PEDOT-PSS. The soft carbon NE with 1.0 wt% PEDOT-PSS exhibits enhanced capacity retention of 64% at a current density of 5 C by lowering its electrical and electrochemical charge transfer resistance. The rate capability increased with increasing amounts of PEDOT-PSS, with no variation in the Li+ diffusivity. This improved electrochemical performance of the NE is also reflected in the LIC full-cell configuration. An LIC employing a 1.0 wt% PEDOT-PSS NE delivers 6.6 F at a high current density of 100 C, which is higher than the 6.0 F measured for the LIC with a bare NE. Moreover, the LIC with the 1.0 wt% PEDOT-PSS NE retains 85% of its initial capacitance even after 5000 cycles. These results are mainly attributed to the favourable electrical network formed by the incorporation of PEDOT-PSS into the NE. Thus, we believe that the incorporation of conductive PEDOT-PSS is a viable approach for obtaining high-power LICs.

AB - The positive effects of incorporating electrically conductive poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT-PSS) into the negative electrode (NE) of a lithium ion capacitor (LIC) is investigated. The binding material of the NE, styrene-butadiene rubber (SBR), is partially substituted by conductive PEDOT-PSS. The soft carbon NE with 1.0 wt% PEDOT-PSS exhibits enhanced capacity retention of 64% at a current density of 5 C by lowering its electrical and electrochemical charge transfer resistance. The rate capability increased with increasing amounts of PEDOT-PSS, with no variation in the Li+ diffusivity. This improved electrochemical performance of the NE is also reflected in the LIC full-cell configuration. An LIC employing a 1.0 wt% PEDOT-PSS NE delivers 6.6 F at a high current density of 100 C, which is higher than the 6.0 F measured for the LIC with a bare NE. Moreover, the LIC with the 1.0 wt% PEDOT-PSS NE retains 85% of its initial capacitance even after 5000 cycles. These results are mainly attributed to the favourable electrical network formed by the incorporation of PEDOT-PSS into the NE. Thus, we believe that the incorporation of conductive PEDOT-PSS is a viable approach for obtaining high-power LICs.

KW - Conductive polymer

KW - Lithium ion capacitor

KW - Negative electrode

KW - Soft carbon

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DO - 10.1016/j.jpowsour.2015.08.083

M3 - Article

AN - SCOPUS:84940747494

SN - 0378-7753

VL - 299

SP - 49

EP - 56

JO - Journal of Power Sources

JF - Journal of Power Sources

M1 - 21631

ER -

Incorporation of conductive polymer into soft carbon electrodes for lithium ion capacitors

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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