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Increasing Electrical Conductivity of Free-Standing Sulfurized Polyacrylonitrile Cathode for Lithium-Sulfur Batteries

Authors
Kim, HuihunChoe, Seon-HwaSadan, Milan K.Kim, ChanghyeonCho, Kwon-KooKim, Ki-WonAhn, Jou-HyeonLee, YounkiAhn, Hyo-Jun
Issue Date
Oct-2020
Publisher
AMER SCIENTIFIC PUBLISHERS
Keywords
Lithium-Sulfur Battery; Free Standing Sulfurized Polyacrylonitrile; High Rate Capability
Citation
SCIENCE OF ADVANCED MATERIALS, v.12, no.10, pp 1441 - 1445
Pages
5
Indexed
SCIE
Journal Title
SCIENCE OF ADVANCED MATERIALS
Volume
12
Number
10
Start Page
1441
End Page
1445
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/6129
DOI
10.1166/sam.2020.3789
ISSN
1947-2935
1947-2943
Abstract
Sulfurized polyacrylonitrile (S-PAN) is one of the best materials for addressing some of the intrinsic drawbacks of lithium-sulfur batteries, such as the intrinsic insulating properties of sulfur and the shuttle phenomenon. Moreover, while S-PAN nanofiber composites are flexible, they still presents shortcomings, such as low rate capability, which is due to their semiconductor electrical conductivity. In this study, we prepared S-PAN webs with high electrical conductivity via electrospinning using conducting agents. Additionally, we analyzed the electrochemical properties of the S-PAN webs prepared using various conducting agents (acetylene black, Ketjen black, and multi-walled carbon nanotubes). The specific capacity of the S-PAN web prepared using acetylene black was 740 mAh g(-1) at the charge rate of 5 C. The excellent rate capability of S-PAN prepared using acetylene black was attributed to its low electrical resistance and low charge transfer resistance.
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Ahn, Hyo Jun
대학원 (나노신소재융합공학과)
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