Poly(imide-co-siloxane) as a Thermo-Stable Binder for a Thin Layer Cathode of Thermal Batteries
- Authors
- Oh, Ilwhan; Cho, Jaeyoung; Kim, Kwansu; Ko, Jaehwan; Cheong, Haewon; Yoon, Young Soo; Jung, Hyun Min
- Issue Date
- Nov-2018
- Publisher
- MDPI
- Keywords
- thermal battery; polyimide; cathode; slurry casting; binder
- Citation
- ENERGIES, v.11, no.11
- Journal Title
- ENERGIES
- Volume
- 11
- Number
- 11
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/3159
- DOI
- 10.3390/en11113154
- ISSN
- 1996-1073
- Abstract
- The polymer binder, poly(imide-co-siloxane) (PIS), was synthesized and applied to form a thin cathode layer of composites for a thermal battery that has an unusually high operating temperature of 450 degrees C. The PIS was prepared through cross-linking of the polyimide with polysiloxane. The morphology of FeS2/PIS composites showed that FeS2 particles was coated with the PIS cross-linked gel. The FeS2/PIS composites enabled to fabricate mechanically stable thin cathode layer that was 10-20% of the thickness of a conventional pellet-type cathode. The FeS2/PIS composites were stable up to 400 degrees C and maintained their morphology at this temperature. PIS coating layers decomposed at 450 degrees C, and a new residue was generated, which was observed by transmission electron microscopy, and the compositional change was analyzed. The FeS2/PIS composites showed enhanced thermal stability over that of FeS2 in thermogravimetric analysis. The thermal battery with the PIS polymer binder showed a 20% discharge capacity increase when compared to a conventional pellet-type cathode.
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Collections - 공과대학 > 신소재공학과 > 1. Journal Articles
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