A5077516688- Advancements in Battery Materials
- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Catalysis and Oxidation Reactions
- Advanced Photocatalysis Techniques
- Extraction and Separation Processes
- Advanced Battery Materials and Technologies
- TiO2 Photocatalysis and Solar Cells
- Supercapacitor Materials and Fabrication
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Semiconductor materials and devices
- Graphene research and applications
- 2D Materials and Applications
- MXene and MAX Phase Materials
- ZnO doping and properties
- Layered Double Hydroxides Synthesis and Applications
- Electrochemical Analysis and Applications
- Gas Sensing Nanomaterials and Sensors
- Nanocluster Synthesis and Applications
- Conducting polymers and applications
- Catalysis and Hydrodesulfurization Studies
- Polyoxometalates: Synthesis and Applications
- Quantum Dots Synthesis And Properties
- Zeolite Catalysis and Synthesis
Tohoku University
2012-2022
Sendai University
2014-2020
Ton Duc Thang University
2018-2019
Institute of Materials Science
2018-2019
Advanced Institute of Materials Science
2019
National Tsing Hua University
2012-2018
Vietnam National University, Hanoi
2012
The spinel MgMn2O4, a cathode material with theoretical capacity of 272 mA h g–1, holds promise for future application in high volumetric magnesium-ion batteries. Atomic-resolution imaging the structure and its surface composition would advance our understanding on electrochemical properties, mass, charge transport behavior electrodes. We observe directly, by aberration-corrected scanning transmission electron microscopy (STEM), atomic cubic MgMn2O4 first time. More importantly, we find that...
An electrode made of Au nanoparticles, ca. 13 nm in diameter, displays outstanding catalytic activity for the hydrogen evolution reaction water. At an overpotential 200 mV it operates with a rate TOF 0.3 s-1, which is among best performances ever achieved Pt-free H2-evolving catalyst.
LiCoPO4 cathode materials have been synthesized by a sol-gel route. X-ray diffraction analysis confirmed that was well-crystallized in an orthorhombic structure the Pmna space group. From high-resolution transmission electron microscopy (HR-TEM) image, lattice fringes of {001} and {100} are well-resolved. The HR-TEM image selected area pattern reveal highly crystalline nature having ordered olivine structure. atom-by-atom has observed, for first time, using high-angle annular dark-field...
The ultrathin two-dimensional nanosheets of layered transition-metal dichalcogenides (TMDs) have attracted great interest as an important class materials for fundamental research and technological applications. Solution-phase processes are highly desirable to produce a large amount TMD applications in energy conversion storage such catalysis, electronics, rechargeable batteries, capacitors. Here, we report rapid exfoliation by supercritical fluid processing the production MoS2 MoSe2...
Abstract Structural studies of high voltage cathode materials are necessary to understand their chemistry improve the electrochemical performance for applications in lithium ion batteries. LiNiPO 4 nanorods and nanoplates synthesized via a one pot synthesis using supercritical fluid process at 450 o C 10 min. The X-ray diffraction (XRD) analysis confirmed that phase is well crystallized, purity supported by energy dispersive spectroscopy (EDS) elemental mapping scanning electron transmission...
Abstract Lithium-ion batteries offer promising opportunities for novel energy storage systems and future application in hybrid electric vehicles or vehicles. Cathode materials with high density are required practical application. Herein, high-voltage LiCoPO 4 cathode different shapes well-developed facets such as nanorods nanoplates exposed {010} have been synthesized by a one-pot supercritical fluid (SCF) processing. The effect of amines their roles on the morphology-control has...
Exploring novel electrode materials is critical for the development of a next-generation rechargeable magnesium battery with high volumetric capacity. Here, we showed that distinct amorphous molybdenum sulfide, being coordination polymer disulfide-bridged (Mo3S11) clusters, has great potential as cathode. This material provided good reversible capacity, attributed to its unique structure flexibility and capability deformation upon Mg insertion. Free-terminal disulfide moiety may act active...
Amorphous molybdenum selenide nanopowder, obtained by refluxing Mo(CO)6 and Se precursors in dichlorobenzene, shows several structural electrochemical similarities to the amorphous sulfide analogue. The displays attractive catalytic properties for hydrogen evolution reaction water over a wide range of pH. In pH 0 solution, it operates with small onset overpotential 125 mV requires an 270 generating current 10 mA/cm2. Compared sulfide, analogue is more robust basic electrolyte. Therefore,...
Nitrogen-doped graphene with up to 22.1% N/C atom and 7.15 × 104 Sm−1 electrical conductivity was synthesized by ionic-liquid-assisted electrolysis subsequent thermal annealing of the resultant ionic-liquid-functionalized sheet.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTRelocation of Cobalt Ions in Electrochemically Delithiated LiCoPO4 Cathode MaterialsQuang Duc Truong*†, Murukanahally Kempaiah Devaraju†, Yoshikazu Sasaki‡, Hiroshi Hyodo†, Takaaki Tomai†, and Itaru Honma*†View Author Information† Institute Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan‡ DATUM Solution Business Operations, JEOL Ltd., Tokyo 196-0022, Japan*E-mail: [email protected]...
Olivine-type LiMPO4 (M = Fe, Mn, Co and Ni) cathode materials hold promise for next-generation of lithium-ion batteries future applications as hybrid electric vehicles or vehicles. In lithium intercalation olivine compounds, the diffusion along a channel is highly anisotropic which mainly confined to [010] direction. Thus, nanosheets nanoplates with shortened Li ion distance direction are enabled accelerate rate improve power density batteries. Herein, we report production high-quality thin...