Styrene-butadiene rubber patterned current collector for improved Li-ion kinetics of the anode for high energy density lithium-ion batteries

Keemin Park; Hee Eun Yoo; Yongmin Jung; Myeungwoo Ryu; Seungcheol Myeong; Dongsoo Lee; Soo Chan Kim; Chanho Kim; Jeongheon Kim; Jiseok Kwon; Kangchun Lee; Chae Woong Cho; Ungyu Paik; Taeseup Song

doi:10.1016/j.jpowsour.2023.233238

Styrene-butadiene rubber patterned current collector for improved Li-ion kinetics of the anode for high energy density lithium-ion batteries

Keemin Park, Hee Eun Yoo, Yongmin Jung, Myeungwoo Ryu, Seungcheol Myeong, Dongsoo Lee, Soo Chan Kim, Chanho Kim, Jeongheon Kim, Jiseok Kwon, Kangchun Lee, Chae Woong Cho, Ungyu Paik, Taeseup Song

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

7 Scopus citations

Abstract

The styrene-butadiene rubber (SBR) binder migration caused by the capillary force-driven solvent evaporation during the drying process results in the concentration gradient of SBR binder in the anode, which deteriorates the adhesion strength at the interface between the anode film and Cu current collector and Li-ion kinetics, respectively. Here, we report SBR patterned Cu current collector (SPC) to overcome problems caused by the SBR binder migration behavior. Pre-patterned SBR strongly adheres to the Cu current collector, which suppresses its migration during the drying process. Homogeneous SBR distribution in the longitudinal direction of the anode improves the adhesion strength and Li-ion kinetics. Enhanced adhesion strength enables the reduction of the SBR content in the anode, which further improves Li-ion kinetics. The anode employing SPC exhibits improved constant current charging capacity retention and cycling stability compared to those of the anode with a pristine Cu current collector.

Original language	English
Article number	233238
Journal	Journal of Power Sources
Volume	577
DOIs	https://doi.org/10.1016/j.jpowsour.2023.233238
State	Published - Sep 1 2023
Externally published	Yes

Funding

This work was supported by the Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) , which was granted financial resources from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20214000000520 ). This work was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1A5A1032539 ).

Keywords

Adhesion strength
Binder migration
High energy density
Li-ion kinetics
Styrene-butadiene rubber

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10.1016/j.jpowsour.2023.233238

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Park, K., Yoo, H. E., Jung, Y., Ryu, M., Myeong, S., Lee, D., Kim, S. C., Kim, C., Kim, J., Kwon, J., Lee, K., Cho, C. W., Paik, U., & Song, T. (2023). Styrene-butadiene rubber patterned current collector for improved Li-ion kinetics of the anode for high energy density lithium-ion batteries. Journal of Power Sources, 577, Article 233238. https://doi.org/10.1016/j.jpowsour.2023.233238

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title = "Styrene-butadiene rubber patterned current collector for improved Li-ion kinetics of the anode for high energy density lithium-ion batteries",

abstract = "The styrene-butadiene rubber (SBR) binder migration caused by the capillary force-driven solvent evaporation during the drying process results in the concentration gradient of SBR binder in the anode, which deteriorates the adhesion strength at the interface between the anode film and Cu current collector and Li-ion kinetics, respectively. Here, we report SBR patterned Cu current collector (SPC) to overcome problems caused by the SBR binder migration behavior. Pre-patterned SBR strongly adheres to the Cu current collector, which suppresses its migration during the drying process. Homogeneous SBR distribution in the longitudinal direction of the anode improves the adhesion strength and Li-ion kinetics. Enhanced adhesion strength enables the reduction of the SBR content in the anode, which further improves Li-ion kinetics. The anode employing SPC exhibits improved constant current charging capacity retention and cycling stability compared to those of the anode with a pristine Cu current collector.",

keywords = "Adhesion strength, Binder migration, High energy density, Li-ion kinetics, Styrene-butadiene rubber",

author = "Keemin Park and Yoo, \{Hee Eun\} and Yongmin Jung and Myeungwoo Ryu and Seungcheol Myeong and Dongsoo Lee and Kim, \{Soo Chan\} and Chanho Kim and Jeongheon Kim and Jiseok Kwon and Kangchun Lee and Cho, \{Chae Woong\} and Ungyu Paik and Taeseup Song",

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year = "2023",

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doi = "10.1016/j.jpowsour.2023.233238",

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T1 - Styrene-butadiene rubber patterned current collector for improved Li-ion kinetics of the anode for high energy density lithium-ion batteries

AU - Park, Keemin

AU - Yoo, Hee Eun

AU - Jung, Yongmin

AU - Ryu, Myeungwoo

AU - Myeong, Seungcheol

AU - Lee, Dongsoo

AU - Kim, Soo Chan

AU - Kim, Chanho

AU - Kim, Jeongheon

AU - Kwon, Jiseok

AU - Lee, Kangchun

AU - Cho, Chae Woong

AU - Paik, Ungyu

AU - Song, Taeseup

PY - 2023/9/1

Y1 - 2023/9/1

N2 - The styrene-butadiene rubber (SBR) binder migration caused by the capillary force-driven solvent evaporation during the drying process results in the concentration gradient of SBR binder in the anode, which deteriorates the adhesion strength at the interface between the anode film and Cu current collector and Li-ion kinetics, respectively. Here, we report SBR patterned Cu current collector (SPC) to overcome problems caused by the SBR binder migration behavior. Pre-patterned SBR strongly adheres to the Cu current collector, which suppresses its migration during the drying process. Homogeneous SBR distribution in the longitudinal direction of the anode improves the adhesion strength and Li-ion kinetics. Enhanced adhesion strength enables the reduction of the SBR content in the anode, which further improves Li-ion kinetics. The anode employing SPC exhibits improved constant current charging capacity retention and cycling stability compared to those of the anode with a pristine Cu current collector.

AB - The styrene-butadiene rubber (SBR) binder migration caused by the capillary force-driven solvent evaporation during the drying process results in the concentration gradient of SBR binder in the anode, which deteriorates the adhesion strength at the interface between the anode film and Cu current collector and Li-ion kinetics, respectively. Here, we report SBR patterned Cu current collector (SPC) to overcome problems caused by the SBR binder migration behavior. Pre-patterned SBR strongly adheres to the Cu current collector, which suppresses its migration during the drying process. Homogeneous SBR distribution in the longitudinal direction of the anode improves the adhesion strength and Li-ion kinetics. Enhanced adhesion strength enables the reduction of the SBR content in the anode, which further improves Li-ion kinetics. The anode employing SPC exhibits improved constant current charging capacity retention and cycling stability compared to those of the anode with a pristine Cu current collector.

KW - Adhesion strength

KW - Binder migration

KW - High energy density

KW - Li-ion kinetics

KW - Styrene-butadiene rubber

UR - https://www.scopus.com/pages/publications/85160422110

U2 - 10.1016/j.jpowsour.2023.233238

DO - 10.1016/j.jpowsour.2023.233238

M3 - Article

AN - SCOPUS:85160422110

SN - 0378-7753

VL - 577

JO - Journal of Power Sources

JF - Journal of Power Sources

M1 - 233238

ER -

Styrene-butadiene rubber patterned current collector for improved Li-ion kinetics of the anode for high energy density lithium-ion batteries

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