Electric Double Layer Capacitors on Hierarchical Porous Carbons

Nagasaki Symposium on Nano-Dynamics 2008 (NSND2008) 平成20年1月29日(火)於長崎大学 Poster Presentatio

The Efficiency of Dispersing Nano-silica Particles in Epoxy Resin Using Zirconia Ball Media by Mechanical Stirring

This paper explores the efficiency of dispersing nano-silica particles in epoxy resin using zirconia ball media by mechanical stirring. Stirring speed (RPM), the time of milling and temperature are the main parameters studied at a fixed media: total silica-epoxy volume ratio. The results show that ball media and heating aid dispersion. The stir speed and duration affects the nano-silica dispersion, given that all the other conditions (zirconia ball media to nano-silica-epoxy ratio and intermittent heating) remain constant. At low stirring speed, short stirring duration is more suitable. On the reverse, higher stirring duration is the more suitable condition to disperse nano-silica at high stirring speed of 500 rpm.Keywords: Dispersing Nano-Silica Particles, Epoxy Resin, Zirconia Ball Media, Mechanical Stirring

Preparation of Organic-Inorganic Nano-Composite Electrolyte Membrane for Intermediate-Temperature PEFCs

ナノダイナミクス国際シンポジウム 平成22年1月21日(木) 於長崎大学Nagasaki Symposium on Nano-Dynamics 2010 (NSND2010), January 21, 2010, Nagasaki University, Nagasaki, Japan, Invited Lectur

Rate capability of lithium intercalation into nano-porous graphitized carbons

Nano-porous graphitized carbons were successfully prepared by using mono-dispersed SiO2 colloidal crystal as a template and mesophase pitch as a carbon source with final heat treatment temperatures (HTT) of 1000?2500 °C. Rate capability of lithium intercalation/de-intercalation of the nano-porous graphitized carbons was investigated. 35?60% of capacities were retained when the current density was increased from 37.2 mA g? 1 to 372 mA g? 1. Electrochemical impedance spectra indicated that formation of SEI layers caused increased polarization

Ionic Conduction at Interfaces of Solid Electrolytes and Electrodes

ナノダイナミクス国際シンポジウム 平成22年1月21日(木) 於長崎大学Nagasaki Symposium on Nano-Dynamics 2010 (NSND2010), January 21, 2010, Nagasaki University, Nagasaki, Japan, Invited Lectur

Rapid Synthesis and Charge?Discharge Properties of LiMnPO4 Nanocrystallite-embedded Porous Carbons

LiMnPO4 nanocrystallite-embedded porous carbons were successfully synthesized within a few minutes by a microwave-heating process. The nanocomposites showed higher charge?discharge capacity and better rate capability than bulk-LiMnPO4 particles synthesized in a similar manner without porous carbons

Lithium Depletion in the Solid Electrolyte Adjacent to Cathode Materials

Nanocomposites of lithium ion conductors (Li2SiO3 and Li1.3Al0.3Ti1.7(PO4)3) and electrode materials (TiO2, Li0.01TiO2 and FePO4) were prepared to investigate interfacial structure and ionic conductivity at the interface between solid electrolytes and electrode materials. It was revealed that lithium ions in the solid electrolytes were attracted to the cathode materials with increasing electrode potential, which increases lithium vacancies in solid electrolytes. For the FePO4 containing composites, due to the high electrode potential, lithium transfer across the interface and ionic conduction through the cathode materials was remarkable. The results suggest that severe lithium depletion occurs and interfacial resistance is large at the interface of high ionic conductors and cathode materials.Interfaces and Interphases in Battery Systems - PRiME 2012; Honolulu, HI; United States; 7 October 2012 ～ 12 October 201

Effect of clotiazepam on gastric mucosal lesions produced by conditioned emotional stimuli in mice.

The anti-ulcer action of clotiazepam (a thienodiazepine derivative) was studied in mice subjected to non-physical and physical stimuli in a communication box. There were two groups of mice: the &#34;sender&#34; mice that received electric shocks on the feet and responded by squealing and jumping, and the &#34;responder&#34; mice that were affected by the senders' responses without receiving shocks on the feet. Gastric ulcers resulted in both groups. The effect of clotiazepam was compared with that of diazepam. The incidence of gastric ulcers was suppressed by clotiazepam at a dose of 3 mg/kg, per os, in &#34;responder&#34; and &#34;sender&#34; mice, and by diazepam at a dose of 1 mg/kg, per os, in &#34;responder&#34; mice. These results suggest that clotiazepam has a suppressive action against gastric ulcers produced by non-physical or physical stimuli, although its potency is slightly weaker than that of diazepam.</p

Interfacial phenomena between lithium ion conductors and cathodes

Nanocomposites of a lithium ion conductor Li1.3Al 0.3Ti1.7(PO4)3 and electrode materials (TiO2 and FePO4) were prepared to investigate interfacial structure and ionic conductivity at the interface between the solid electrolyte and electrode materials. It was revealed that lithium ions in the solid electrolyte were attracted to the cathode materials with increasing electrode potential, which increases lithium vacancies in the solid electrolyte. For the FePO4 containing composites, due to the high electrode potential, lithium transfer across the interface and ionic conduction through the cathode materials was remarkable. The results suggest that severe lithium depletion occurs and interfacial resistance is large at the interface of high ionic conductors and cathode materials. The space charge layer thickness is also discussed

Composite Bonded Magnets With Self-Recoverability <newline/>for Miniaturized Anisotropic Magnet Rotor

In the preparation of a miniaturized rotor, a composite bonded magnet was fabricated by taking advantage of self-recoverability. A preformed magnet was synthesized by using incomplete three-dimensional network molecular structure which was formed under the optimum conditions at a temperature of 433 K, an alignment field of 1.4 MA/m, and a low compacting pressure of 50 MPa, respectively. The preformed ones were extruded and compressed into a ring-shaped magnet by using the self-recoverability at a pressure of 200 MPa and a temperature of 423 K under non-alignment-field. Through the process, a composite bonded magnet rotor in the shape of a ring could be prepared without a bonding layer. It was clarified that a 4 pole/6 slot DC brush less motor can be obtained by using the ring-shaped rotor comprising a parallel oriented anisotropic magnet with 7 mm in outer diameter, 158 kJ/m3 in (BH)max, and 6.2 Mg/m3 in density, respectively. Resultantly, the developed rotor enabled us to increase the S-T gradient by 1.75 times compared with that for a conventional isotropic Nd-Fe-B bonded magnet rotor with the same dimensions