A5101647003- Advancements in Battery Materials
- Organic and Molecular Conductors Research
- Advanced Battery Materials and Technologies
- Physics of Superconductivity and Magnetism
- X-ray Diffraction in Crystallography
- Advanced Condensed Matter Physics
- Crystallization and Solubility Studies
- Conducting polymers and applications
- Advanced battery technologies research
- Solid-state spectroscopy and crystallography
- Magnetic and transport properties of perovskites and related materials
- Magnetism in coordination complexes
- Semiconductor materials and devices
- Advanced Battery Technologies Research
- Iron-based superconductors research
- Layered Double Hydroxides Synthesis and Applications
- Copper Interconnects and Reliability
- Porphyrin and Phthalocyanine Chemistry
- Multiferroics and related materials
- Rare-earth and actinide compounds
- Spectroscopy Techniques in Biomedical and Chemical Research
- Microwave Dielectric Ceramics Synthesis
- Crystallography and molecular interactions
- Ionic liquids properties and applications
- Supercapacitor Materials and Fabrication
National Institute of Advanced Industrial Science and Technology
2018-2025
Tohoku University
1994-2024
Kinan Hospital
2022
Nagoya University
2022
Ikeda Municipal Hospital
2018-2021
Hiroshima University
1991-2021
Midorigaoka Hospital
2021
Tokyo University of Science
1992-2020
Ehime University
1998-2020
Vanderbilt University
2020
Abstract Rechargeable potassium-ion batteries have been gaining traction as not only promising low-cost alternatives to lithium-ion technology, but also high-voltage energy storage systems. However, their development and sustainability are plagued by the lack of suitable electrode materials capable allowing reversible insertion large potassium ions. Here, exploration database for potassium-based has led us discover ion conducting layered honeycomb frameworks. They show capability ions at...
The world is at the cusp of a new era where pivotal importance being attached to development sustainable and high-performance energy storage systems. Potassium-ion batteries are deemed not only as cheap battery candidates, but also penultimate high-voltage systems within monovalent-cation chemistries. However, their performance sustainability undermined by lack suitable electrolytes for operation particularly due limited availability cathode materials. Here, potential ionic liquids based on...
Pentakis-fused TTF derivatives extended with two cyclohexene-1,4-diylidenes (2a and 2b) have been successfully synthesized. Cyclic voltammetry of the tetrakis(2-ethylhexylthio) derivative (2b) has revealed that it exhibits five stages redox process to form 2b10+. A coin-type cell composed a positive electrode incorporating tetrakis(methylthio) (2a) discharge capacity 196 mA h g−1, which corresponds participation ten electron redox. It shows high performance energy density 700 mW g−1 an...
The designing of high voltage cathode materials is critical for the advancement potassium-ion (K-ion) battery. Herein, we present a new honeycomb framework P2-type K2/3Ni1/3Co1/3Te1/3O2 (or equivalently written as K2NiCoTeO6) which exhibits highest on record (beyond 4 V versus K+/K) layered materials. This work will allow further development of, particularly, cathodes K-ion
This study highlights the design concept of a positive electrode material which can accommodate both cations and anions during charge/discharge process for realizing high energy density rechargeable batteries.
Fused donor-acceptor triads composed of two tetrathiafulvalenes (TTFs) and benzoquinone (BQ; 1) or naphthoquinone (NQ; 2) were successfully synthesized. X-ray structure analysis the bis(n-butylthio) derivative revealed that molecules are stacked in a head-to-tail manner. The bis(n-hexylthio)-1 exhibited six-pairs one-electron transfer waves cyclic voltammogram, corresponding to formation both reduction oxidation states from -2 +4. unsubstituted bis(methylthio) derivatives 1 2 active...
Abstract Derivatives of tris-fused TTF donors 3 extended with cyclohexene-1,4-diylidene were synthesized. Cyclic voltammetry revealed that the tetrakis(hexylthio)-3 (3c) exhibited three stages a two-electron redox process to afford hexacation. The rechargeable battery incorporating tetrakis(methylsulfanyl)-3 (3b) as positive electrode material high cycle performance in spite utilizing highest oxidation state +6.
Abstract Aim Non‐alcoholic steatohepatitis (NASH) is a critical liver disease showing potential progression to cirrhosis/cancer. Previously, we had reported that odontogenic infection of Porphyromonas gingivalis ( P. ), major periodontal pathogen, exacerbates fibrosis in NASH through the production mediators such as transforming growth factor‐β1 (TGF‐β1) and galectin‐3. In this study, determined effects therapeutic interventions using antibiotics on induced by infection. Materials methods To...
Derivatives of tris-fused TTF extended with two ethanediylidenes (5), tris- and pentakis-fused TTFs thiophene-2,5-diylidenes (6-9) were successfully synthesized. Cyclic voltammograms the tetrakis(n-hexylthio) derivative 5 7 (5d, 7d) consisted pairs two-electron redox waves one-electron waves. On other hand, four observed for 9 (9d). Coin-type cells using bis(ethylenedithio) derivatives (5b), 6 (6b) tetrakis(methylthio) (5c) 8 (8c) as positive electrode materials showed initial discharge...
Tris‐fused π‐electron donors composed of two tetrathiafulvalenes (TTFs) and one extended TTF with anthraquinoid spacer ( 3 ) were successfully synthesized. The cyclic voltammograms the tetrakis( n ‐hexylthio)‐ bis(ethylenedioxy) derivatives 3c 3d consisted three‐pairs two‐electron redox waves. Spectroelectrochemitry indicated that positive charges in 2+ are located mainly on central moiety. Coin‐type cells electrodes incorporating unsubstituted‐ 3a showed discharge capacities 192 160 mAh g...
Fused donor–donor–acceptor triads composed of tetrathiafulvalenes (TTFs) and benzoquinone (BQ) or naphthoquinone (NQ) were synthesized. The bis(methylsulfanyl)-TTFs-BQ TTFs-NQ serve as a positive electrode active material for the rechargeable lithium battery with an energy density over 800 mW h g−1. bis(methylsulfanyl)-TTFs-NQ also functions sodium battery.
Abstract Many types of batteries have been proposed as next‐generation energy‐storage systems. One candidate is a rocking‐chair‐type “molecular ion battery” in which molecular ion, instead Li + , works charge carrier. Previously, we reported viologen‐type derivative negative electrode material that releases and receives PF 6 − anions during the charge–discharge process; however, its redox potential was not satisfactorily low. Further, two plateaus this (difference=0.5 V) should be reduced....
Iron pyrite (FeS2) exhibits dynamic thermal stability and represents an ideal model system to probe complex phase transformations in materials. At elevated temperatures, the sublimation of S atoms from FeS2 lattice results a transformation one many polymorphic forms pyrrhotite, i.e., Fe1-XS (where 0 ≤ X < 0.2) stoichiometric FeS. The nature this remains relatively unexplored at nanoscale. Here, we use situ transmission electron microscopy (TEM) X-ray diffraction (XRD) observe ~150 nm...
Rare-metal-free and high-performance secondary batteries are necessary for improving the efficiency of renewable energy systems. Organic compounds attractive candidates active material such batteries. Many studies have reported organic materials that show high density per weight. However, materials, most which exhibit low conductivity specific density, typically require a large amount conductive additive (>50 wt %) to obtain utilization rate. Therefore, rarely display electrode High...
Derivatives of a tris-fused donor composed two tetrathiafulvalenes (TTFs) and one extended TTF with an anthraquinoid spacer (TTFAQ) (3) were successfully synthesized. Cyclic voltammetry the t...
Using the standard 1/N expansion, we study O(N) vector models in D dimensions with an arbitrary potential. We limit ourselves to renormalizable theories. show that there exists a value of coupling constant corresponding critical point and double scaling can be performed as D=0 case matrix D=0, 1. For D=1 theory is potential find general hierarchy theories labeled by integer k. The universal partition function obtained constructed. Finally, behaviour those same branched polymer model recently...