Electrochemical Properties and Changes of Crystal and Electronic Structures of Spinel-Type Mg1.33– y V1.67– x + y Mn x O4 ( x = 0.15, 0.06 ≤ y ≤ 0.13) for Magnesium Secondary Batteries
- 1Tokyo University of Science , , 2641 Yamazaki , , ,
- 2National Institute for Materials Science (NIMS) , , 1-1 Namiki , , ,
- 3National Institute for Materials Science (NIMS) , , 1-2-1 Sengen , , ,
Abstract
Mg1.33–yV1.67–x+yMnxO4 was synthesized by a solid-state method. Powder X-ray diffraction analysis indicated that the product crystallized in the spinel structure with space group Fd3̅m; inductively coupled plasma atomic emission spectroscopic analysis showed that the Mg content was slightly lower than the nominal composition for all samples. Charge–discharge cycle tests showed that the discharge capacity exceeded 180 mAh/g and that the cycle characteristics were reversible up to 20 cycles at 90 °C for the composition with x = 0.15, y = 0.1. The electronic structure was analyzed by the maximum-entropy method on the basis of Rietveld analysis results. The sample with x = 0.15, y = 0.08 had a lower electron density and Mg insertion was easier than in the samples with x = 0.15, y = 0.1, and y = 0.13. The sample with x = 0.15, y = 0.08 had less distortion at the 16d site than the samples with x = 0.15, y = 0.1, and y = 0.13, and the distortion decreased with increasing V content.
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BibTeX
@article{idemoto2026electrochemical,
title = {{Electrochemical Properties and Changes of Crystal and Electronic Structures of Spinel-Type Mg1.33– y V1.67– x + y Mn x O4 ( x = 0.15, 0.06 ≤ y ≤ 0.13) for Magnesium Secondary Batteries}},
author = {Yasushi Idemoto and Kohei Yamanouchi and Chiaki Ishibashi and Naoto Kitamura and Toshihiko Mandai and Hidetoshi Somekawa},
journal = {ACS Omega},
year = {2026},
month = oct,
doi = {10.1021/acsomega.6c04483},
url = {https://pubs.acs.org/acsodf/article/11/41/62789/5444281/Electrochemical-Properties-and-Changes-of-Crystal},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Electrochemical Properties and Changes of Crystal and Electronic Structures of Spinel-Type Mg1.33– y V1.67– x + y Mn x O4 ( x = 0.15, 0.06 ≤ y ≤ 0.13) for Magnesium Secondary Batteries
AU - Yasushi Idemoto
AU - Kohei Yamanouchi
AU - Chiaki Ishibashi
AU - Naoto Kitamura
AU - Toshihiko Mandai
AU - Hidetoshi Somekawa
PY - 2026
DA - 2026/10/05
JO - ACS Omega
DO - 10.1021/acsomega.6c04483
UR - https://pubs.acs.org/acsodf/article/11/41/62789/5444281/Electrochemical-Properties-and-Changes-of-Crystal
AB - Mg1.33–yV1.67–x+yMnxO4 was synthesized by a solid-state method. Powder X-ray diffraction analysis indicated that the product crystallized in the spinel structure with space group Fd3̅m; inductively coupled plasma atomic emission spectroscopic analysis showed that the Mg content was slightly lower than the nominal composition for all samples. Charge–discharge cycle tests showed that the discharge capacity exceeded 180 mAh/g and that the cycle characteristics were reversible up to 20 cycles at 90 °C for the composition with x = 0.15, y = 0.1. The electronic structure was analyzed by the maximum-entropy method on the basis of Rietveld analysis results. The sample with x = 0.15, y = 0.08 had a lower electron density and Mg insertion was easier than in the samples with x = 0.15, y = 0.1, and y = 0.13. The sample with x = 0.15, y = 0.08 had less distortion at the 16d site than the samples with x = 0.15, y = 0.1, and y = 0.13, and the distortion decreased with increasing V content.
SN - 2470-1343
ER -