Thermal power generation during heat cycle near room temperature

Takayuki Shibata, Yuya Fukuzumi, Wataru Kobayashi, Yutaka Moritomo

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We demonstrate that a sodium-ion secondary battery (SIB)-type thermocell consisting of two types of Prussian blue analogue (PBA) with different electrochemical thermoelectric coefficients (S EC ≡ ∂V/∂T; V and T are the redox potential and temperature, respectively) produces electrical energy during heat cycles. The device produces an electrical energy of 2.3 meV/PBA per heat cycle between 295 K (= T L) and 323 K (= T H). The ideal thermal efficiency (η = 1.0%), which is evaluated using the heat capacity (C = 4.16 meV/K) of ideal Na2Co[Fe(CN)6], reaches 11% of the Carnot efficiency (ηth = 8.7%). Our SIB-type thermocell is a promising thermoelectric device that harvests waste heat near room temperature.

Original languageEnglish
Article number017101
JournalApplied Physics Express
Volume11
Issue number1
DOIs
Publication statusPublished - 2018 Jan 1
Externally publishedYes

Fingerprint

storage batteries
turbogenerators
heat generation
electric power
Power generation
Secondary batteries
sodium
analogs
waste heat
heat
cycles
thermodynamic efficiency
room temperature
Sodium
ions
Waste heat
Ions
specific heat
Temperature
Specific heat

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Shibata, T., Fukuzumi, Y., Kobayashi, W., & Moritomo, Y. (2018). Thermal power generation during heat cycle near room temperature. Applied Physics Express, 11(1), [017101]. https://doi.org/10.7567/APEX.11.017101

Thermal power generation during heat cycle near room temperature. / Shibata, Takayuki; Fukuzumi, Yuya; Kobayashi, Wataru; Moritomo, Yutaka.

In: Applied Physics Express, Vol. 11, No. 1, 017101, 01.01.2018.

Research output: Contribution to journalArticle

Shibata, T, Fukuzumi, Y, Kobayashi, W & Moritomo, Y 2018, 'Thermal power generation during heat cycle near room temperature', Applied Physics Express, vol. 11, no. 1, 017101. https://doi.org/10.7567/APEX.11.017101
Shibata, Takayuki ; Fukuzumi, Yuya ; Kobayashi, Wataru ; Moritomo, Yutaka. / Thermal power generation during heat cycle near room temperature. In: Applied Physics Express. 2018 ; Vol. 11, No. 1.
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