Improved stability of lithium-ion battery cathodes using conducting polymer binders

Hyun Deok Lee; Gyu Jin Jung; Ho Seok Lee; Tae Young Kim; Jae Dong Byun; Kwang S. Suh

doi:10.1166/sam.2016.2606

Improved stability of lithium-ion battery cathodes using conducting polymer binders

Hyun Deok Lee
, Gyu Jin Jung
, Ho Seok Lee
, Tae Young Kim^*
, Jae Dong Byun
, Kwang S. Suh

^*Corresponding author for this work

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

6 Citations (Scopus)

Abstract

Lithium-nickel-manganese-cobalt oxide (LiNi_xCo_yMn_zO₂) (NCM) has a high specific capacity and is used as a cathode material for Li-ion batteries. However, the poor cycling stability associated with NCM-based cathode composites imposes a challenge for achieving stable cycling performance. Here, we report the use of a conducting polymer as a binder to yield a stable NCM-based cathode composite. Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) was successfully used with a NCM cathode material, resulting in many advantages, such as improved electrical conductivity within the electrode and strong adhesion of the electrode composite on the current collector. With PEDOT:PSS binder, the NCM-based cathodes showed stable cycling performance and an improved capacity retention of ~85% after 100 cycles at 45°C.

Original language	English
Pages (from-to)	84-88
Number of pages	5
Journal	Science of Advanced Materials
Volume	8
Issue number	1
DOIs	https://doi.org/10.1166/sam.2016.2606
Publication status	Published - 2016 Jan 1

Bibliographical note

Funding Information:
This work was supported by the Gachon University research fund of 2014 (GCU-2014-0112).

Publisher Copyright:
© 2016 by American Scientific Publishers.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Cathode composite
Conducting polymer binder
Lithium-ion battery
Lithium-nickel-manganese-cobalt oxide
Poly(3,4-ethylenedioxythiophene)

ASJC Scopus subject areas

General Materials Science

Access to Document

10.1166/sam.2016.2606

Cite this

@article{96b9436bad5943f59d41b9f60c3b9068,

title = "Improved stability of lithium-ion battery cathodes using conducting polymer binders",

abstract = "Lithium-nickel-manganese-cobalt oxide (LiNixCoyMnzO2) (NCM) has a high specific capacity and is used as a cathode material for Li-ion batteries. However, the poor cycling stability associated with NCM-based cathode composites imposes a challenge for achieving stable cycling performance. Here, we report the use of a conducting polymer as a binder to yield a stable NCM-based cathode composite. Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) was successfully used with a NCM cathode material, resulting in many advantages, such as improved electrical conductivity within the electrode and strong adhesion of the electrode composite on the current collector. With PEDOT:PSS binder, the NCM-based cathodes showed stable cycling performance and an improved capacity retention of \textasciitilde{}85\% after 100 cycles at 45°C.",

keywords = "Cathode composite, Conducting polymer binder, Lithium-ion battery, Lithium-nickel-manganese-cobalt oxide, Poly(3,4-ethylenedioxythiophene)",

author = "Lee, \{Hyun Deok\} and Jung, \{Gyu Jin\} and Lee, \{Ho Seok\} and Kim, \{Tae Young\} and Byun, \{Jae Dong\} and Suh, \{Kwang S.\}",

note = "Funding Information: This work was supported by the Gachon University research fund of 2014 (GCU-2014-0112). Publisher Copyright: {\textcopyright} 2016 by American Scientific Publishers.",

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doi = "10.1166/sam.2016.2606",

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AU - Lee, Hyun Deok

AU - Jung, Gyu Jin

AU - Lee, Ho Seok

AU - Kim, Tae Young

AU - Byun, Jae Dong

AU - Suh, Kwang S.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Lithium-nickel-manganese-cobalt oxide (LiNixCoyMnzO2) (NCM) has a high specific capacity and is used as a cathode material for Li-ion batteries. However, the poor cycling stability associated with NCM-based cathode composites imposes a challenge for achieving stable cycling performance. Here, we report the use of a conducting polymer as a binder to yield a stable NCM-based cathode composite. Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) was successfully used with a NCM cathode material, resulting in many advantages, such as improved electrical conductivity within the electrode and strong adhesion of the electrode composite on the current collector. With PEDOT:PSS binder, the NCM-based cathodes showed stable cycling performance and an improved capacity retention of ~85% after 100 cycles at 45°C.

AB - Lithium-nickel-manganese-cobalt oxide (LiNixCoyMnzO2) (NCM) has a high specific capacity and is used as a cathode material for Li-ion batteries. However, the poor cycling stability associated with NCM-based cathode composites imposes a challenge for achieving stable cycling performance. Here, we report the use of a conducting polymer as a binder to yield a stable NCM-based cathode composite. Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) was successfully used with a NCM cathode material, resulting in many advantages, such as improved electrical conductivity within the electrode and strong adhesion of the electrode composite on the current collector. With PEDOT:PSS binder, the NCM-based cathodes showed stable cycling performance and an improved capacity retention of ~85% after 100 cycles at 45°C.

KW - Cathode composite

KW - Conducting polymer binder

KW - Lithium-ion battery

KW - Lithium-nickel-manganese-cobalt oxide

KW - Poly(3,4-ethylenedioxythiophene)

UR - https://www.scopus.com/pages/publications/84964727665

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DO - 10.1166/sam.2016.2606

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SN - 1947-2935

VL - 8

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JF - Science of Advanced Materials

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Improved stability of lithium-ion battery cathodes using conducting polymer binders

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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