Preprint Article Version 1 This version is not peer-reviewed

Poly(imide-co-siloxane) as a Thermo-Stable Binder for Thin Layer Cathode of Thermal Batteries

Version 1 : Received: 8 November 2018 / Approved: 9 November 2018 / Online: 9 November 2018 (04:23:11 UTC)

How to cite: Oh, I.; Cho, J.; Kim, K.; Ko, J.; Cheong, H.; Yoon, Y.S.; Jung, H.M. Poly(imide-co-siloxane) as a Thermo-Stable Binder for Thin Layer Cathode of Thermal Batteries. Preprints 2018, 2018110240 (doi: 10.20944/preprints201811.0240.v1). Oh, I.; Cho, J.; Kim, K.; Ko, J.; Cheong, H.; Yoon, Y.S.; Jung, H.M. Poly(imide-co-siloxane) as a Thermo-Stable Binder for Thin Layer Cathode of Thermal Batteries. Preprints 2018, 2018110240 (doi: 10.20944/preprints201811.0240.v1).

Abstract

The polymer binder, poly(imide-co-siloxane) (PIS), was synthesized and applied to form a thin cathode layer composites for a thermal battery that has an unusually high operating temperature of 450 °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 20–10% of the thickness of a conventional pellet-type cathode. The FeS2/PIS composites were stable up to 400 °C and maintained their morphology at this temperature.  PIS coating layers decomposed at 450 °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.

Subject Areas

thermal battery; polyimide; cathode; slurry casting; binder

Readers' Comments and Ratings (0)

Leave a public comment
Send a private comment to the author(s)
Rate this article
Views 0
Downloads 0
Comments 0
Metrics 0
Leave a public comment

×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.