A5053182167- Advancements in Battery Materials
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Nagoya University
2008-2025
Japanese Red Cross Nagoya Daiichi Hospital
2024
Osaka Research Institute of Industrial Science and Technology
2019-2023
Nara Institute of Science and Technology
2021-2022
Osaka Prefecture University
2014-2019
Graduate School USA
2015
National Institute for Fusion Science
2001-2006
National Institutes of Natural Sciences
2005
Yamagata University
2000-2003
Kyoto University
1990-1999
Mechanical properties of solid electrolytes are important as well ionic conductivity to achieve all-solid-state batteries with large capacities and long cycle life. In this study, it is shown that Li2S–P2S5 glasses lithium halides, especially LiI, exhibit both high favorable mechanical properties. properties, such Young's modulus formability at powder compaction, evaluated for the electrolytes. The addition halides decreases addition, fewer pores grain boundaries were observed in...
Sulfide glasses are considered to be promising electrolytes for all-solid-state batteries because of their high ionic conductivities and favorable mechanical properties. In this paper, comprehensive studies the properties sulfide were carried out based on Li2S–P2S5 system, we evaluated effects changing glass former modifier elastic moduli formability these glasses. Young's increased when P was replaced with Ge or Si. Moreover, also substituting S O. Irrespective modifier, RxSy–P2S5 (R = Li,...
Lymph node metastases beyond the hepatoduodenal ligament are sometimes encountered in locally limited T2 gallbladder cancer (GBCA). However, incidence and impact on prognosis remain unclear. This was a retrospective multi-institutional study of patients who underwent surgical resection for GBCA from 2002 to 2022. The eighth edition Union International Cancer Control staging used tumor-node-metastasis categorization. lymph location classified as follows: (A) along common hepatic artery; (B)...
A sulfide glass electrolyte of 75Na<sub>2</sub>S·25P<sub>2</sub>S<sub>5</sub> (mol%) has good formability at room temperature.
Low-melting oxide glasses are promising as electrolytes for all-solid-state lithium rechargeable batteries. Glasses in the pseudobinary system Li3BO3–Li2SO4 were prepared by a mechanochemical technique. Raman spectra revealed that contained no macroanions which form networks but consisted only of Li+ ions and two discrete ortho-oxoanions, BO33− SO42−. The density molar volume increased elastic moduli decreased with an increase Li2SO4 content glasses. heat treatment at around 300°C brought...
Li metal is very attractive as a negative electrode material for high-energy-density all-solid-state batteries owing to its high specific capacity and low electrochemical potential. However, short-circuiting of upon formation dendrites serious issue that hinders successful practical application. An advantage their inherent safety at temperatures. In this study, the high-temperature performance Li-metal containing sulfide-glass electrolytes was investigated. Symmetric cells with Li3PS4...
Mechanical properties such as elastic modulus of solid electrolytes are important for all-solid-state batteries. To investigate the effects a partial substitution oxide sulfide on Young's modulus, 70Li2S·(30 − x)P2S5·xP2O5 (mol %) (x = 0, 3 and 10) oxysulfide glasses were prepared characterized. moduli measured by ultrasonic pulse echo method dense pellets hot pressing at around glass transition temperature. The 22–27 GPa increased with an increase in P2O5 content. highest this report was 27...
All-solid-state lithium-ion batteries (ASSLIBs) without organic liquid electrolytes have attracted considerable attention as a solution to existing safety issues. Si is the most promising anode active material for increasing energy density of such owing its high theoretical capacity. However, stress relaxation with large structural fluctuations major challenge practical use. In present study, nanoporous particles and sulfide-based solid electrolyte are composited accommodate volumetric...
All-solid-state batteries (ASSBs) are potentially safe energy storage devices. The 90Li3BO3·10Li2SO4 (mol %) glass-ceramic is one of the promising oxide electrolytes due to its high ductility and ionic conductivity. Utilization Li metal negative electrode enhances density ASSBs. Herein, electrochemical stability electrolyte against was demonstrated. symmetric cells using a dense body with relative 99% synthesized by hot-pressing technique showed excellent cycle performance for dissolution...
Stress relaxation of Si with large structural fluctuations is a critical challenge for its practical application in lithium-ion batteries (LIBs). In this study, nanoporous particles, which are prepared by Mg 2 reduction mesoporous SiO spheres, applied as an anode active material all-solid-state LIBs (ASSLIBs) Li 3 PS 4 solid electrolyte. Nanoporous half-cells exhibit excellent cyclability high-capacity retention about 90% at 50 cycles compared to non-porous below 20%. The cross-sectional...
All-solid-state batteries comprising Si anodes are promising materials for energy storage in electronic vehicles because their density is approximately 1.7 times higher than that of graphite anodes. However, undergoes severe volume changes during cycling, resulting the loss and ionic conduction pathways rapid capacity fading. To address this challenge, we developed composite with a nanoporous fiber network structure sulfide-based solid electrolytes (SEs) conductive additives. Nanoporous...
Si is the most promising anode active material for lithium-ion batteries owing to its high theoretical capacity and low operating potential. In this study, composite anodes consisting of nanoporous particles, Li3PS4 solid electrolyte, a conductive additive (CA) in weight ratios 4:6:x (x = 1, 2, 3, 4) are fabricated tested. The electrical conductivities 4.1 × 10-4 S cm−1 6.8 at 1 4, respectively. addition, charge increases proportion with CA content from 2700 mAh g−1 3015 g−1. These results...
Ion cyclotron range of frequency (ICRF) heating experiments on the Large Helical Device (LHD) [O. Motojima et al. Fus. Eng. Des. 20, 3 (1993)] achieved significant advances during third experimental campaign carried out in 1999. They showed results two modes; these are modes ICH-sustained plasma with large stored energy and neutral beam injection (NBI) under additional heating. A long-pulse operation more than 1 minute was at a level MW. The characteristics ICRF heated same as those NBI...
Abstract Due to their high conductivity and interface formability, sulfide electrolytes are attractive for use in energy density all-solid-state batteries. However, electrode volume changes during charge-discharge cycling typically cause mechanical contact losses at the electrode/electrolyte interface, which leads capacity fading. Here, suppress this loss, isolated PS 4 3- anions reacted with iodine prepare a polymer electrolyte that forms sticky gel dispersion anisole drying of resulting...
A long-pulse plasma discharge of more than 30 min duration was achieved on the Large Helical Device (LHD). ne = 0.8 × 1019 m−3 and Ti0 2.0 keV sustained with PICH 0.52 MW, PECH 0.1 MW averaged PNBI 0.067 MW. The total injected heating energy 1.3 GJ. One keys to success experiment a dispersion local heat load divertors, accomplished by sweeping magnetic axis inward outward. Causes limiting long pulse are discussed. An ion impurity penetration limited further in 8th experimental campaign (2004).
This paper reports on the behaviour of high-energy ions created by ion cyclotron range frequency (ICRF) heating Large Helical Device (LHD). In third experimental campaign conducted in 1999, it was found that minority has good performance, and particles were observed. fourth 2000, temporal investigated regime using turnoff or modulation ICRF power. The time evolution particle distribution measured a natural diamond detector (NDD) time-of-flight neutral analyser (TOF-NPA). It count number...
Nanoporous Si particles, which are prepared from Mg2Si reduction of SiO2 fumes, and Li3PS4 solid electrolyte composited to accommodate the volume expansion Si. Cross-sectional FE-SEM EDX measurements after charging/discharging show that nanoporous particles/aggregates entangle surrounding make close contact, resulting in preservation low interfacial resistance high cycle stability. While, non-porous composite anodes, large cracks formed at Si-Li3PS4 interface, causing capacity retention. To...