[11a-B12-1~12] 12.3 Functional Materials and Novel Devices

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[11a-B12-6] Molecular Orientation Analysis of Sulfonated Polyimide Thin Films for the Design of Artificial Cathode-Electrolyte Interphases

〇Kentaro Aoki¹, Nagao Yuki¹ (1.JAIST)

Keywords:

Li ion battery,Orientation,Liquid crystal

Alkyl sulfonated polyimide (ASPI) is an amphiphilic polymer electrolyte that forms lamellar structures owing to its lyotropic liquid crystalline nature and is promising as an artificial CEI material. In this study, ASPI-2-Li thin films with thicknesses ranging from 4.2 to 50.4 nm were prepared, and their structure, density, and molecular orientation were evaluated by X-ray reflectivity measurements and MAIRS2. The results revealed that the main-chain orientation angle changed significantly below a film thickness of 10 nm, leading to an almost completely in-plane orientation.