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Issue 6, 2019
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The effect of 3d-electron configuration entropy on the temperature coefficient of redox potential in Co1−zMnz Prussian blue analogues†

Hiroki Iwaizumi,a   Yusuke Fujiwara,a   Yuya Fukuzumia  and  Yutaka Moritomo ORCID logo *abc  
Author affiliations

* Corresponding authors

a Graduate School of Pure & Applied Science, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-7571, Japan
E-mail: moritomo.yutaka.gf@u.tsukuba.ac.jp

b Faculty of Pure & Applied Science, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-7571, Japan

c Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan

Abstract

Recently, it was reported that a thermocell can convert temperature into electrical energy by using the difference in the thermal coefficient (α ≡ dV/dT) of the redox potential (V) between the cathode and anode materials. Here, we systematically investigated α of NaxCo1−zMnz[Fe(CN)6]y (Co1−zMnz-PBA) against Mn concentration (z). The z-dependence of α is interpreted in terms of the 3d-electron configuration entropy (ΔS3d) of the redox site. Utilization of S3d is a strategy effective for the design of high-|α| materials for energy harvesting thermocells.

Graphical abstract: The effect of 3d-electron configuration entropy on the temperature coefficient of redox potential in Co1−zMnz Prussian blue analogues

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Article information

https://doi.org/10.1039/C8DT04338H
Submitted
31 Oct 2018
Accepted
12 Nov 2018
First published
13 Nov 2018
Dalton Trans., 2019,48, 1964-1968
Article type
Paper
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The effect of 3d-electron configuration entropy on the temperature coefficient of redox potential in Co1−zMnz Prussian blue analogues

H. Iwaizumi, Y. Fujiwara, Y. Fukuzumi and Y. Moritomo, Dalton Trans., 2019, 48, 1964
DOI: 10.1039/C8DT04338H

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