Hiroyuki Fujimoto

ORCID: 0000-0003-4562-7715
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About
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Research Areas
  • Advancements in Battery Materials
  • Pancreatic function and diabetes
  • Fiber-reinforced polymer composites
  • Graphene research and applications
  • Advanced Battery Materials and Technologies
  • Advanced Battery Technologies Research
  • Supercapacitor Materials and Fabrication
  • Diabetes Treatment and Management
  • X-ray Diffraction in Crystallography
  • Superconducting Materials and Applications
  • Diabetes and associated disorders
  • Diabetes Management and Research
  • Advanced ceramic materials synthesis
  • Physics of Superconductivity and Magnetism
  • Neuroendocrine Tumor Research Advances
  • Magnetic Properties of Alloys
  • RNA Interference and Gene Delivery
  • Electron and X-Ray Spectroscopy Techniques
  • Conducting polymers and applications
  • Graphite, nuclear technology, radiation studies
  • Microbial Inactivation Methods
  • Inorganic Fluorides and Related Compounds
  • Advanced biosensing and bioanalysis techniques
  • Crystallography and Radiation Phenomena
  • Electrical Contact Performance and Analysis

Yokohama National University
2025

Osaka City University Hospital
2025

Osaka Metropolitan University
2025

Kyoto University
2014-2024

Japan Society
2022

Osaka Gas (Japan)
2006-2021

Kyushu University
1989-2016

Tokyo National Hospital
1993-2014

Railway Technical Research Institute
1993-2013

Sanyo (Japan)
1999-2010

Mesocarbon microbeads (MCMB) is one of the promising carbon materials as anodes for rechargeable lithium batteries among commercially available materials. We have examined correlation between structures and chargedischarge characteristics MCMBs prepared at different heat‐treatment temperatures. It was found that MCMB heat‐treated 700°C possesses a tremendously high charge‐discharge capacity . This suggests there another mechanism reaction besides graphite intercalation compound which well...

10.1149/1.2044128 article EN Journal of The Electrochemical Society 1995-04-01

Carbon is one of the best candidate materials for negative electrode rechargeable lithium batteries; however, electrochemical characteristics are not fully understood in terms structure materials. The relationship linking volume ration graphitic mesocarbon microbeads (MCMBs) and has been examined, it was found that capacity range between 0 to 0.25 V (vs. Li/Li+) 1 mol · dm−3 (DEE) electrolyte increased with an increase MCMBs. This result shows storage mechanism this potential...

10.1149/1.2048523 article EN Journal of The Electrochemical Society 1995-03-01

Total syntheses of carazostatin (1), hyellazole (2a), and carbazoquinocins B-F (3b-f) have been completed. The cross-coupling reaction between 3-iodoindole 8 vinylstannane 11b gave the 3-alkenylindole 7. Treatment 7 with ethynylmagnesium bromide, followed by etherification resulting alcohol 12 MOMCl, yielded 3-alkenyl-2-propargylindole 6. compound 6 was treated t-BuOK in t-BuOH at 90 degrees C to obtain desired carbazoles 4 together N-deprotected carbazole 13 through an allene-mediated...

10.1021/jo962038t article EN The Journal of Organic Chemistry 1997-04-01

Elevating the charging voltage of lithium-ion batteries with a cathode is investigated to develop them toward high capacity and energy density. Three countermeasures are found be essential overcome side reactions subsequent cycle degradations caused by higher potential: limiting cut-off potential below vs for cathode, modification particles element, controlling ratio ethylene carbonate in electrolyte, which major cause degradation an elevated condition. It suggested that oxidized dissolves...

10.1149/1.2916685 article EN Journal of The Electrochemical Society 2008-01-01

The aim of this study was to identify pathways that have a significant impact during renal carcinogenesis. Sixty-seven paired samples both noncancerous cortex tissue and cancerous from patients with clear cell carcinomas (RCCs) were subjected whole-exome, methylome transcriptome analyses using Agilent SureSelect All Exon capture followed by sequencing on an Illumina HiSeq 2000 platform, Infinium HumanMethylation27 BeadArray SurePrint Human Gene Expression microarray, respectively. Sanger...

10.1002/ijc.28768 article EN cc-by-nc-nd International Journal of Cancer 2014-02-06

Indocyanine green (ICG) fluorescence imaging is widely utilized for visualizing hepatic tumors, segmentation, and biliary anatomy, improving the safety curability of cancer surgery. However, its application perfusion assessment in hepatobiliary pancreatic (HBP) surgery has been less explored. This study evaluated outcomes patients undergoing HBP with vascular reconstruction from April 2022 to August 2024. During surgery, ICG (1.25-5 mg/body) was administered intravenously assess need quality...

10.3390/cancers17050868 article EN Cancers 2025-03-03

The electrochemical properties of new carbon materials obtained by the heat‐treatment condensed polynuclear aromatic (COPNA) precursors have been investigated. COPNA were synthesized from an compound (pyrene, Py) and a cross‐linking agent, dimethyl‐p‐xylene glycol (DMPXG), with series DMPXG/Py molar ratios. results indicate that discharge capacities carbons heat‐treated at 800°C increased as ratios increased. derived them above 1.5 greater than , corresponding to composition stage 1 Li‐GIC,...

10.1149/1.1836986 article EN Journal of The Electrochemical Society 1996-07-01

Since the commercialization of rechargeable Li ion batteries in early 1990 s, performance these devices has continually improved. In such batteries, graphite is typically used as negative electrode and present work examined reaction mechanisms at electrodes based on operando synchrotron X-ray diffraction analyses during charge/discharge. The resulting in-plane patterns Li-intercalated permitted a detailed analysis changes three-dimensional structure electrode. As intercalation proceeded from...

10.1149/1945-7111/abf181 article EN cc-by-nc-nd Journal of The Electrochemical Society 2021-03-24

The charge‐discharge reaction mechanism of the graphitized mesocarbon microbead (MCMB) anode was investigated with cyclic voltammetry and x‐ray diffractometry. It is concluded that MCMB involves intercalation lithium, which essentially similar to for graphite. However, in‐plane ordering stage 1 2 Li‐GICs obtained from not like graphite, but close , according results both diffractometry voltammetry.

10.1149/1.2048684 article EN Journal of The Electrochemical Society 1995-09-01

The formal total synthesis of murrayaquinone A (1) and the furostifoline (5) were completed by construction 4-oxygenated 3-methylcarbazoles 7 based on a new type electrocyclic reaction through 2-alkenyl-3-allenylindole intermediates 8 derived from 2-alkenyl-3-propargylindoles 9, starting 2-chloroindole-3-carbaldehyde (11). N, O-bisbenzyloxymethyl group 16c 22 underwent Birch reduction followed treatment with Triton B to produce known 4-hydroxy-3-methylcarbazole (7a) 4-hydroxy-3-methylfuro[3,...

10.1248/cpb.49.881 article EN Chemical and Pharmaceutical Bulletin 2001-01-01

The graphite negative electrode for Li-ion batteries was subjected to precision charge/discharge measurements at low current loads. derivatives of the potential vs capacity curve and C/Li composition were used analyze elementary reactions. number peaks in potential-capacity derivative increased with decreasing load, reactions, based on formation an unconfirmed superlattice structure, could be clearly separated analyzed. By synchronizing these results operando synchrotron X-ray diffraction...

10.1149/1945-7111/ac7e77 article EN cc-by-nc-nd Journal of The Electrochemical Society 2022-07-01
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