Neutron Powder Diffractometer HERMES — After the Decade-Long Shutdown

Nambu, Yusuke; Ikeda, Yoichi; Taniguchi, Takanori; Ohkawara, Manabu; Avdeev, Maxim; Fujita, Masaki

doi:10.7566/jpsj.93.091005

Cited by 4 publications

(1 citation statement)

References 48 publications

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“…In the cooling process, the sample was kept in a D 2 O-saturated He flow for 2 h at each temperature of 900, 800, 700, 600, 500, 400, 300, 200, and 100 °C to reach equilibrium. Neutron diffraction data of the dry Ba 5 Er 2 Al 2 SnO 13 and hydrated Ba 5 Er 2 Al 2 SnO 13–5 y /2 (OD) 5 y pellets were measured at 5 K with the fixed-wavelength neutron diffractometer HERMES at the JRR-3 research reactor of JAEA (Tokai, Japan) (wavelength = 1.3428(3) Å). The collected data were analyzed by the Rietveld method with the program RIETAN-FP .…”

Section: Methodsmentioning

confidence: 99%

High Proton Conduction in the Octahedral Layers of Fully Hydrated Hexagonal Perovskite-Related Oxides

Matsuzaki,

Saito,

Ikeda

et al. 2024

J. Am. Chem. Soc.

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Section: Methodsmentioning

confidence: 99%

High Proton Conduction in the Octahedral Layers of Fully Hydrated Hexagonal Perovskite-Related Oxides

Matsuzaki,

Saito,

Ikeda

et al. 2024

J. Am. Chem. Soc.

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Synthesis, Electronic Structure, and Redox Chemistry of Li₂MnP₂S₆, a Candidate High-Voltage Cathode Material

Cheng,

Fujii,

Nomata

et al. 2024

Chem. Mater.

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While significant efforts have been made to harness the large capacity of sulfide-based cathodes, there has been limited focus on increasing their voltage. Here, by a novel iodide-assisted synthesis route, we successfully synthesized lithium metal thiophosphates Li 2 MP 2 S 6 (M = Mn, Fe, and Co), of which Li 2 MnP 2 S 6 is a new compound. Electrochemical extraction of Li from Li 2 FeP 2 S 6 and Li 2 MnP 2 S 6 was performed at ∼3 V, significantly higher than other sulfide-based cathodes. Despite the similar voltages, these two materials were found to operate by very different redox mechanisms. Density functional theory calculations and X-ray absorption spectroscopy show that while Li 2 FeP 2 S 6 exhibits mostly traditional cationic redox, Li 2 MnP 2 S 6 redox involves significant participation of anionic redox. Our analysis of Li 2 MnP 2 S 6 is also used to contextualize recent work on other Li-rich thiophosphate cathodes. This work introduces a new synthetic route to access sulfide-based materials and sheds insights into the high-voltage redox mechanism in thiophosphate-based cathodes.

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Materials Science and Condensed Matter Physics on PATH Triple-Axis Spectrometers AKANE and TOPAN

Ikeda,

Taniguchi,

Takada

et al. 2024

J. Phys. Soc. Jpn.

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Neutron Powder Diffractometer HERMES — After the Decade-Long Shutdown

Cited by 4 publications

References 48 publications

High Proton Conduction in the Octahedral Layers of Fully Hydrated Hexagonal Perovskite-Related Oxides

High Proton Conduction in the Octahedral Layers of Fully Hydrated Hexagonal Perovskite-Related Oxides

Synthesis, Electronic Structure, and Redox Chemistry of Li₂MnP₂S₆, a Candidate High-Voltage Cathode Material

Materials Science and Condensed Matter Physics on PATH Triple-Axis Spectrometers AKANE and TOPAN

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Neutron Powder Diffractometer HERMES — After the Decade-Long Shutdown

Cited by 4 publications

References 48 publications

High Proton Conduction in the Octahedral Layers of Fully Hydrated Hexagonal Perovskite-Related Oxides

High Proton Conduction in the Octahedral Layers of Fully Hydrated Hexagonal Perovskite-Related Oxides

Synthesis, Electronic Structure, and Redox Chemistry of Li2MnP2S6, a Candidate High-Voltage Cathode Material

Materials Science and Condensed Matter Physics on PATH Triple-Axis Spectrometers AKANE and TOPAN

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Product

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Synthesis, Electronic Structure, and Redox Chemistry of Li₂MnP₂S₆, a Candidate High-Voltage Cathode Material