Abstract
With the rapid increment of the electric vehicle market, silicon has attracted tremendous attention as a promising anode material for lithium-ion batteries (LIB) due to its tenfold higher gravimetrical energy density compared with a traditional graphite anode. To eliminate the well-known poor cycle life issue originated from the large volume expansion of the silicon-based electrode, the development of novel polymeric binder is essential. Herein, we synthesized a novel silane-treated polyacrylonitrile (Si-PAN) as an anode binder using facile azide-nitrile click reaction. Incorporation of silane to the cyclized-PAN structure enhances affinity between the electrode components and a current collector because it has organic and inorganic moiety simultaneously in polymeric backbone. This work implements a Si-alloy (Si70Ni20Cu10) based electrode with improved capacity retention through the optimization of silane amount and thermal treatment condition. Namely, the electrode composing Si-treated PAN-2.0 binder and Si-alloy, after being thermally treated at 450 °C shows stable discharge capacity of 760 mA h g−1 upon 50 cycles, resulting in 46% capacity retention improvement against pristine PAN binder (at 450 °C). New binder demonstrates a great potential to improve the electrochemical properties of next-generation electrode materials for energy storage systems.
| Original language | English |
|---|---|
| Article number | 152481 |
| Journal | Journal of Alloys and Compounds |
| Volume | 815 |
| DOIs | |
| Publication status | Published - Jan 30 2020 |
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Keywords
- Lithium-ion batteries
- Negative electrode
- Polyacrylonitrile binder
- Silicon alloy
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Cite this
Novel silane-treated polyacrylonitrile as a promising negative electrode binder for LIBs. / Umirov, Nurzhan; Moon, Seongjun; Park, Gyori; Kim, Hyang Yeon; Lee, Kyung Jin; Kim, Sung Soo.
In: Journal of Alloys and Compounds, Vol. 815, 152481, 30.01.2020.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Novel silane-treated polyacrylonitrile as a promising negative electrode binder for LIBs
AU - Umirov, Nurzhan
AU - Moon, Seongjun
AU - Park, Gyori
AU - Kim, Hyang Yeon
AU - Lee, Kyung Jin
AU - Kim, Sung Soo
PY - 2020/1/30
Y1 - 2020/1/30
N2 - With the rapid increment of the electric vehicle market, silicon has attracted tremendous attention as a promising anode material for lithium-ion batteries (LIB) due to its tenfold higher gravimetrical energy density compared with a traditional graphite anode. To eliminate the well-known poor cycle life issue originated from the large volume expansion of the silicon-based electrode, the development of novel polymeric binder is essential. Herein, we synthesized a novel silane-treated polyacrylonitrile (Si-PAN) as an anode binder using facile azide-nitrile click reaction. Incorporation of silane to the cyclized-PAN structure enhances affinity between the electrode components and a current collector because it has organic and inorganic moiety simultaneously in polymeric backbone. This work implements a Si-alloy (Si70Ni20Cu10) based electrode with improved capacity retention through the optimization of silane amount and thermal treatment condition. Namely, the electrode composing Si-treated PAN-2.0 binder and Si-alloy, after being thermally treated at 450 °C shows stable discharge capacity of 760 mA h g−1 upon 50 cycles, resulting in 46% capacity retention improvement against pristine PAN binder (at 450 °C). New binder demonstrates a great potential to improve the electrochemical properties of next-generation electrode materials for energy storage systems.
AB - With the rapid increment of the electric vehicle market, silicon has attracted tremendous attention as a promising anode material for lithium-ion batteries (LIB) due to its tenfold higher gravimetrical energy density compared with a traditional graphite anode. To eliminate the well-known poor cycle life issue originated from the large volume expansion of the silicon-based electrode, the development of novel polymeric binder is essential. Herein, we synthesized a novel silane-treated polyacrylonitrile (Si-PAN) as an anode binder using facile azide-nitrile click reaction. Incorporation of silane to the cyclized-PAN structure enhances affinity between the electrode components and a current collector because it has organic and inorganic moiety simultaneously in polymeric backbone. This work implements a Si-alloy (Si70Ni20Cu10) based electrode with improved capacity retention through the optimization of silane amount and thermal treatment condition. Namely, the electrode composing Si-treated PAN-2.0 binder and Si-alloy, after being thermally treated at 450 °C shows stable discharge capacity of 760 mA h g−1 upon 50 cycles, resulting in 46% capacity retention improvement against pristine PAN binder (at 450 °C). New binder demonstrates a great potential to improve the electrochemical properties of next-generation electrode materials for energy storage systems.
KW - Lithium-ion batteries
KW - Negative electrode
KW - Polyacrylonitrile binder
KW - Silicon alloy
UR - http://www.scopus.com/inward/record.url?scp=85072858809&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072858809&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2019.152481
DO - 10.1016/j.jallcom.2019.152481
M3 - Article
AN - SCOPUS:85072858809
VL - 815
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
M1 - 152481
ER -