Toyota

About: Toyota is a company organization based out in Safenwil, Switzerland. It is known for research contribution in the topics: Internal combustion engine & Battery (electricity). The organization has 40032 authors who have published 55003 publications receiving 735317 citations. The organization is also known as: Toyota Motor Corporation & Toyota Jidosha KK.

Development of the fuel cell vehicle mirai

Abstract: The use of electricity and hydrogen is considered a promising way to help resolve environmental and energy-related issues. Based on this concept, fuel cell (FC) vehicles (FCVs) have been developed with the aim of achieving their widespread adoption in the future. This article describes the technical challenge to be overcome in the actual production of FCs installed in FCV Mirai. © 2016 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

The d-band structure of Pt nanoclusters correlated with the catalytic activity for an oxygen reduction reaction

Abstract: This paper presents the correlation between the d-band center of Pt nanoclusters and the catalytic activity for an oxygen reduction reaction (ORR). The size-dependent d-band center was determined for Pt nanoclusters deposited on glassy carbon substrates by photoelectron spectroscopy using synchrotron radiation light. It is found that the d-band center moves toward the Fermi level (EF) with decreasing cluster size, as predicted by the first-principles calculations using linear combinations of pseudoatomic orbitals and norm-conserved pseudopotentials. The ORR activity of Pt nanoclusters measured by linear sweep voltammetry with the rotating disk electrode method reveals that the activity is diminished with decreasing cluster size and with moving the d-band center toward the EF. This is consistent with the d-band model claiming that the closer the d-band center is to EF the larger the oxygen adsorption energy is.

Preparation and Characterization of Novel Mesoporous Ceria−Titania

Abstract: Synthesis of a novel thermally stable mesoporous ceria−titania phase using a neutral templating route is reported. The as-made inorganic-template hybrid mesostructured matrix showed a broad low-angle XRD peak characteristic of mesoporous materials. Careful thermal treatment of the matrix allowed the subsequent densification (of the pore walls) of the inorganic component and removal of the organic component so that a high-quality mesoporous ceria−titania was formed as observed by TEM analysis. The calcined material showed the formation of fluorite type structure of CeO2 but no crystalline titania phase was observed. The mesoporous structure remained even after high-temperature treatment. The material had high surface area after calcination up to the temperature of 973 K, with well-dispersed ceria and titania components and negligible bulk oxide formation (from XRD, UV−vis, and XPS analysis). These novel mesoporous ceria−titania materials showed high performance for the removal of volatile organic compound ...

A solution-processed TiS2/organic hybrid superlattice film towards flexible thermoelectric devices

Abstract: Liquid-exfoliation has proven to be a scalable and versatile technique to produce high-yield two-dimensional nanosheets in graphene, BN, layered perovskites and transition metal dichalcogenides. This also provides new insights into the construction of novel nanoelectronics and nanophotonics through the assembly of nanosheets. Here we present a simple exfoliation-and-reassembly approach to produce a flexible n-type TiS2/organic hybrid film for low-temperature thermoelectric applications. The obtained film shows a superlattice structure with alternative layers of TiS2 and organic molecules. Charge transfer occurs when TiS2 and organic molecules form intercalation complexes, which gives rise to a high electrical conductivity but a low Seebeck coefficient. However, the power factor can be further enhanced by annealing the film under vacuum, and the value reaches 210 μW m−1 K−2 at room temperature in this study. Our flexible thermoelectric device can generate a high power density of 2.5 W m−2 at a temperature gradient of 70 K, which hits a new record among organic-based thermoelectric devices.