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.
| Original language | English |
|---|---|
| Pages (from-to) | 84-88 |
| Number of pages | 5 |
| Journal | Science of Advanced Materials |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
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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)
Cite this
Improved stability of lithium-ion battery cathodes using conducting polymer binders. / Lee, Hyun Deok; Jung, Gyu Jin; Lee, Ho Seok; Kim, Tae Young; Byun, Jae Dong; Suh, Kwang Suck.
In: Science of Advanced Materials, Vol. 8, No. 1, 01.01.2016, p. 84-88.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Improved stability of lithium-ion battery cathodes using conducting polymer binders
AU - Lee, Hyun Deok
AU - Jung, Gyu Jin
AU - Lee, Ho Seok
AU - Kim, Tae Young
AU - Byun, Jae Dong
AU - Suh, Kwang Suck
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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U2 - 10.1166/sam.2016.2606
DO - 10.1166/sam.2016.2606
M3 - Article
VL - 8
SP - 84
EP - 88
JO - Science of Advanced Materials
JF - Science of Advanced Materials
SN - 1947-2935
IS - 1
ER -