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

Department of Materials Science and Engineering

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

4 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

Keywords

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

ASJC Scopus subject areas

Materials Science(all)

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

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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 ~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).",

year = "2016",

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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.

N1 - Funding Information: This work was supported by the Gachon University research fund of 2014 (GCU-2014-0112).

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)

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

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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