[24p-E205-1~18] 9.4 Thermoelectric conversion

[24p-E205-13] Interrelation between discharge capacity and charge coefficient of redox potential
in tertiary battery

〇Yutaka Moritomo¹, Shimaura Yousuke¹, Shibata Takayuki² (1.Univ. of Tsukuba, 2.TUMSAT)

Keywords:thermal energy harvest, tertiary battery, discharge capacity

We are proposing a "tertiary battery" that utilizes the temperature coefficient (α) of the redox potential as one of the energy harvesting technologies. The important performance indicators of the "tertiary battery" as a battery are (1) thermally-induce voltage V _cell and (2) discharge capacity Q _cell . From the geometry of the discharge curve, the capacity is expressed as ΔT (α ⁺ -α ^-) / [β <sup > + / r-β ^- / (r-1)]. Here, β is the charge coefficient of the redox potential, and r is the ratio of the cathode active material to the total active material. The purpose of this study is to evaluate the Q _cell of tertiary batteries using active material with different β and clarify the relationship between Q _cell and β.