期刊
JOURNAL OF POWER SOURCES
卷 361, 期 -, 页码 195-202出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.06.084
关键词
Olivine; Nanoparticles; MgMnSiO4; MgCoSiO4; Magnesium-ion battery
资金
- Japan Society for the Promotion of Science (JSPS) [PU15903]
- Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST)
- Core Technology Consortium for Advanced Energy Devices, Tohoku University, Japan
- ALCA-SPRING from Japan Science and Technology Agency (JST) [J130001697]
Magnesium-ion batteries hold promise as next-generation secondary battery systems owing to its low cost, safety and high volumetric capacity. Magnesium metal silicates exhibit potential electrode materials with high specific capacities. However, the strong electrostatic interaction between Mg2+ and host lattice due to its divalency as well as antisite cation exchange, induces slow intercalation kinetics of Mg ions within the crystal lattices. Thus, nanocrystalline particles with shortened Mg ion diffusion distance enable the insertion/extraction of Mg ions and improve specific capacities of the batteries. Herein, we report the low-temperature production of crystalline MgMnSiO4 and MgCoSiO4 nanoparticles by a rapid supercritical fluid processing. The extraction of magnesium ions from the olivine framework has been confirmed by X-ray photoelectron spectroscopy, revealing its ability as active materials for magnesium ion battery. (C) 2017 Elsevier B.V. All rights reserved.
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