Increasing Electrical Conductivity of Free-Standing Sulfurized Polyacrylonitrile Cathode for Lithium-Sulfur Batteries
- Authors
- Kim, Huihun; Choe, Seon-Hwa; Sadan, Milan K.; Kim, Changhyeon; Cho, Kwon-Koo; Kim, Ki-Won; Ahn, Jou-Hyeon; Lee, Younki; Ahn, 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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