A5059489150- Supercapacitor Materials and Fabrication
- Fiber-reinforced polymer composites
- Advancements in Battery Materials
- Graphene research and applications
- Carbon Nanotubes in Composites
- Electrocatalysts for Energy Conversion
- Catalysis and Hydrodesulfurization Studies
- Catalytic Processes in Materials Science
- Petroleum Processing and Analysis
- Fuel Cells and Related Materials
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
- Advanced Battery Technologies Research
- Hydrocarbon exploration and reservoir analysis
- Nanomaterials for catalytic reactions
- Mesoporous Materials and Catalysis
- Adsorption and Cooling Systems
- Asymmetric Hydrogenation and Catalysis
- Zeolite Catalysis and Synthesis
- Liquid Crystal Research Advancements
- Heat Transfer and Optimization
- Advanced NMR Techniques and Applications
- Advanced battery technologies research
- NMR spectroscopy and applications
- Polymer crystallization and properties
Kyushu University
2016-2025
Korea Institute of Science and Technology
2021
Kasugai Municipal Hospital
2016-2017
Korea Institute of Energy Research
2008-2014
Toyota Technological Institute
2014
Yonsei University
2012
China University of Petroleum, East China
2008
Japan Science and Technology Agency
2007
State Key Laboratory of Chemical Engineering
2006
East China University of Science and Technology
2006
Nitrogen-doped graphene sheets were prepared through a hydrothermal reduction of colloidal dispersions graphite oxide in the presence hydrazine and ammonia at pH 10. The effect temperature on structure, morphology, surface chemistry as-prepared investigated though XRD, N(2) adsorption, solid-state (13)C NMR, SEM, TEM, XPS characterizations. Oxygen nitrogen doping achieved simultaneously under reaction. Up to 5% nitrogen-doped with slightly wrinkled folded feature obtained relative low...
Abstract A hierarchical N‐doped carbon nanotube‐graphene hybrid nanostructure (NCNT‐GHN), in which the graphene layers are distributed inside CNT inner cavities, was designed to efficiently support noble metal (e.g., PtRu) nanoparticles. Well‐dispersed PtRu nanoparticles with diameters of 2–4 nm were immobilized onto these NCNT‐GHN supports by a low‐temperature chemical reduction method without any pretreatment. Compared conventional CNTs and commercial catalysts. much better catalytic...
Platinum and palladium nanoparticles supported on three types of carbon nanofibers (CNFs) are synthesized used as catalysts in the hydrogenation nitroarenes. Nanosized platinum particles dispersed platelet-type CNF efficiently catalyze reduction functionalized nitroarenes to corresponding substituted anilines high turnover numbers with other functional groups remaining intact.
Proton exchange membrane fuel cells (PEMFCs) are efficient, low-emission energy sources for vehicles and backup power. The electrode assembly is crucial performance; however, traditional porous carbon supports used catalysts suffer from corrosion, particularly during start-up shut-down cycles, which limits cell durability. In this study, we investigated the effect of nanodrilling on performance durability in PEMFCs. Two commercial blacks were physically activated subjected to treatment using...
The FT-IR spectra of carbon nanotubes (CN) and oxidated were obtained using diffuse reflection Fourier-transform infrared (DRIFT) spectroscopy. cure behavior the liquid-crystalline epoxy (LCE)/CN LCE/carbon black (CB) systems investigated. effect surface treatment nanotube on in LCE/CN system was investigated with differential scanning calorimetry (DSC), compared those CB. heat higher than that LCE/CB system. activation energy dependent concentration curing agent. energies for reaction...
PtRu alloy nanoparticles (24 ± 1 wt %, Ru/Pt atomic ratios = 0.91−0.97) supported on carbon nanofibers (CNFs) were prepared within a few minutes by using microwave-polyol method. Three types of CNFs with very different surface structures, such as platelet, herringbone, and tubular ones, used new supports. The dependence particles sizes electrochemical properties the structures was examined. It found that methanol fuel cell activities PtRu/CNF catalysts in order platelet > herringbone....
Petroleum-based needle coke was activated by KOH to develop high-performance carbons as carbon electrodes for an electric double-layer capacitor (EDLC). The effect of preparation parameters on the properties investigated, and their EDLC were measured in organic electrolytic solution. As-prepared (NCD-ACs) exhibit large surface areas (400−2900 m2/g), high capacitances (14−44 F/g), low system resistances (8.3−18.7 Ω) basis anisotropic texture precursor.
Silver nanocrystals were synthesized by reducing AgNO3 in N,N-dimethylformamide (DMF) solution. Besides decahedral and icosahedral nanoparticles, a series of their intermediate particles, which consist combination two more tetrahedra, are obtained. It was found that nanoparticles not formed through assembling tetrahedra separately but produced the stepwise growth tetrahedral units on specific facets DMF. A simple model suggested position fourth unit determines whether decahedron or...
Abstract Adsorption of low concentration formaldehyde on pitch‐based, rayon‐based, and PAN‐based activated carbon fibers (ACFs) an unactivated fiber (PAN‐CF) was investigated by a dynamic method. The pore structure surface chemistry these samples were characterized liquid nitrogen adsorption, elemental analysis, X‐ray photoelectron spectroscopy. Results revealed that the structure, especially chemical composition, greatly influence adsorption. ACFs showed highest adsorption capacity because...