[16p-WL2_401-1~15] 9.4 Thermoelectric conversion

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-WL2_401-13] Resistance components of [Fe(CN)₆]^4-/[Fe(CN)₆]^3-Liquid thermoelectric converter

〇Soshi Fukuda¹, Yutaka Moritomo^1,2,3 (1.Degree Programs in Pure and Applied Sciences, 2.Fac. Pre and Appl. Sci., Univ. Tsukuba, 3.TREMS, Univ. Tsukuba)

Keywords:

Liquid thermoelectric converter,ferrocyanide / ferricyanide,graphite-dispersing electrodes

This study aims to enhance the performance of Liquid Thermoelectric Converters (LTE) by systematically analyzing the components of their device resistance R: solute resistance (Rs), charge-transfer resistance (Rct), and diffusion resistance (Rdif). Specifically, we investigated the Fe(CN)6_4-/Fe(CN)6_3- LTE utilizing graphite-dispersing coated electrodes, and confirmed that Rct-1 and Rdif-1 increase linearly with the electrode thickness t in the thin region, reflecting the increase in electrochemical active surface area (EASA). We also demonstrated that the rate-determining step for this LTE is mass transfer. The maximum power output (Wmax) of this LTE reached 0.76 W m-2 at DeltaT=50K, suggesting the effectiveness of the coated electrode in the Fe(CN)6_4-/Fe(CN)6_3- LTE.