2024-03-28T22:45:52Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02002104
2023-01-16T04:56:53Z
320:321:322
Exploring Cu-Based Spinel/Delafossite Couples for Thermochemical Energy Storage at Medium-High Temperature
Chen, Xiaoyu
Kubota, Mitsuhiro
Yamashita, Seiji
Kita, Hideki
heat storage
TCES
medium-high temperature
Cu-based oxides
spinels
delafossites
Cu-based spinel/delafossite couples with Mn and Fe as second cations were synthesized using the Pechini method for medium-high temperature thermochemical energy storage. Physicochemical properties of each sample were investigated. Only CuMn2O4/CuMnO2 exhibited favorable redox behavior in the range of 500–1000 °C. Cu-based delafossite can reoxidize at a lower temperature (∼600 °C), which may be related to the existence of a MO6 octahedra structure. Through the isothermal oxidation method, CuMn2O4/CuMnO2 couple showed a larger oxidation enthalpy of 258.32 ± 15.31 kJ/kg (1402.68 ± 83.13 kJ/L) than 190.35 ± 4.81 kJ/kg (1048.83 ± 26.50 kJ/L) of CuFe2O4/CuFeO2 couple. CuMn2O4 was chosen for further cyclability test with 20 cycles; the depth of reduction increased gradually and stabilized at 4% change in mass after 13 cycles.
journal article
ACS Publications
2021-07-26
application/pdf
ACS Applied Energy Materials
7
4
7242
7249
2574-0962
https://nagoya.repo.nii.ac.jp/record/2002104/files/Chen-AppliedEnergyMaterials-21.pdf
eng
https://doi.org/10.1021/acsaem.1c01352
This document is the Accepted Manuscript version of a Published Work that appeared in final form in [The Journal of Organic Chemistry], copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [https://pubs.acs.org/articlesonrequest/AOR-AI8V9IUEK6EKACDNGCWI].”