A5070071861- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced NMR Techniques and Applications
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Graphite, nuclear technology, radiation studies
- Crystallography and Radiation Phenomena
- Fiber-reinforced polymer composites
- Solid-state spectroscopy and crystallography
- Inorganic Chemistry and Materials
- Chemical Synthesis and Characterization
Okayama University
2020-2024
Japan Advanced Institute of Science and Technology
2024
Extremely high capacity hard carbon for Na-ion battery, delivering 478 mAh g-1 , is successfully synthesized by heating a freeze-dried mixture of magnesium gluconate and glucose MgO-template technique. Influences synthetic conditions nano-structures on electrochemical Na storage properties in the are systematically studied to maximize reversible capacity. Nano-sized MgO particles formed matrix prepared pre-treatment at 600 °C. Through acid leaching carbonization 1500 °C, resultant...
An in-depth investigation of the overlithiation/oversodiation and subsequent delithiation/desodiation graphite hard carbon electrodes in first cycle was conducted using <italic>operando</italic><sup>7</sup>Li/<sup>23</sup>Na solid-state NMR.
Although heteroatom doping is an effective method to improve the capacity of hard carbon (HC) anodes in Na-ion batteries (NIBs), complicated structure HC leads uncertainty when understanding effects on sodium storage. This study shows phosphorus and sulfur storage using solid-state NMR prepared by carbonization resorcinol formaldehyde (RF) resin at 1100 °C. Heteroatom increased battery HC, especially plateau capacity, but interlayer distance layers did not expand considerably. 23Na revealed...
Abstract Extremely high capacity hard carbon for Na‐ion battery, delivering 478 mAh g −1 , is successfully synthesized by heating a freeze‐dried mixture of magnesium gluconate and glucose MgO‐template technique. Influences synthetic conditions nano‐structures on electrochemical Na storage properties in the are systematically studied to maximize reversible capacity. Nano‐sized MgO particles formed matrix prepared pre‐treatment at 600 °C. Through acid leaching carbonization 1500 °C, resultant...
Although heteroatom doping is an effective method to improve the capacity of hard carbon (HC) anodes in Na-ion batteries (NIBs), complicated structure HC leads uncertainty when understanding effects on sodium storage. This study shows phosphorus and sulfur storage using solid-state NMR prepared by carbonization resorcinol formaldehyde (RF) resin at 1100°C. Heteroatom increased battery HC, especially plateau capacity, but interlayer distance layers did not expand considerably. 23Na revealed...
Abstract Solid-state nuclear magnetic resonance is an invaluable tool for potassium–graphite intercalation compounds, promising anode materials of K-ion batteries, but it has not yet been applied because several issues. We attempted 39K NMR measurements compounds sealed in glass using 18.8 T spectrometer with a probe adjusted to the samples. The first observed signal showed possibility evaluating intralayer density, which cannot be ascertained from Raman measurements.