NISSAN MOTOR CO., LTD. manufactures and distributes automobiles and related parts. We simulated the start-up/shut-down cycle by exchanging gases at the anode between hydrogen and air. All rights reserved. What company does Makoto Uchida work for? 3.9, and Fig. 1-1, Takashima 1-Chome, Nishi-Ku, Improvement of the cathode performance, Yoda, T., Shimura, T., Bae, B., Miyatake, K., Uchida, M., Uchida, H., Watanabe, M., Electrochimica Acta, Volume 55, Issue 10, 1 April 2010, Pages 3464-3470, New evaluation method for the effectiveness of platinum/carbon electrocatalysts under operating conditions, Lee, M., Uchida, M., Yano, H., Tryk, D.A., Uchida, H., Watanabe, M., Electrochimica Acta, Volume 55, Issue 28, 1 December 2010, Pages 8504-8512, Sulfonated Poly(arylene ether sulfone ketone) Multiblock Copolymers with Highly Sulfonated Block. A fuel cell with the double layer... A fuel cell system includes a fuel cell; a fuel gas supplying unit supplying the fuel gas into the fuel cell on the anode side thereof; an oxidizing agent gas supplying unit supplying the oxidizing agent gas into the fuel cell on the cathode side thereof; a raw material gas supplying unit supplying the raw material gas into the fuel cell; and a con... We investigated the deleterious effects of the common practice of measuring cyclic voltammetry (CV) on Pt/CB catalysts during long-term start-up/shutdown cycling longevity evaluation of the type used in standard protocols used in the fuel cell automotive industry. Among the cells with SPI-8 membranes with uniformly dispersed SiO2... We found that Nb-doped SnO2−δ nanoparticles were improved in their electrical conductivity by more than two orders of magnitude by the aggregation of the particles, including the fusion of nearest-neighbor particles to form a random branching structure, and the formation of a porous agglomerated structure similar to that of conventional carbon blac... A double layer ionomer membrane, thin-layer Nafion (perfluorinated sulfonic acid polymer) on a sulfonated aromatic block copolymer (SPK-bl-1), was prepared for improving fuel cell performance. The current-potential behavior of the polymer electrolyte fuel cell cathode has been subjected to a new type of curve-fitting analysis that is not based on a specific model but rather utilizes a series of Tafel slope components: a primary slope, with an effective transfer coefficient α c,eff of close to unity, plus a doubled component (α c,eff ca.... To facilitate the development of high performance polymer electrolyte fuel cells (PEFCs), we have proposed a new evaluation method for the effectiveness of Pt (EfPt) under actual PEFC operating conditions. Uchida graduated from Doshisha University in 1991. (adsbygoogle = window.adsbygoogle || []).push({}); Nissan Motor Corporation (Japanese: 日産自動車株式会社 Hepburn: Nissan Jidōsha Kabushiki-gaisha? In order to reduce the amount of noble metal catalysts for the oxygen evolution reaction (OER) in polymer electrolyte membrane water electrolysis (PEMWE) while maintaining high efficiency, we synthesized new catalysts: IrOx nanoparticles dispersed on Nb-SnO2 and Ta-SnO2 supports with fused-aggregate structures. The cathode performances were evaluated in a PEFC at 80 °C and relative humidities (RH) from 60 to 100%. Oct. 8, … We summarized investigations on the evaluation of cell performance and durability for cathode catalysts on two types of supports, carbon blacks (CBs) and conducting ceramic nanoparticles, during simulated fuel cell vehicle (FCV) operation, including start-up/shutdown (SU/SD) cycles and load cycles. The reaction distribution inside a polymer electrolyte fuel cel（l PEFC）is important for the cell performance and durability, and needs to be elucidated. However it was found that the COR was still caused duri... To reduce the Pt loadings in cathode catalysts for polymer electrolyte fuel cells, we focused on the catalyst material and catalyst-layer (CL) fabrication method, and prepared low Pt loading CLs with Pt/Ta-SnO2 by the electrospray (ES) method. Start-up and shut-down cycling in PECFs causes severe degradation, because the carbon supports at the cathode catalyst layers are corroded due to the instantaneous reaction with H2O.
The titanium nitride (TiN) support, which was synthesized by the radio-frequency (RF) plasma method, had high electrical conductivity, up to 850 S cm −1 at room temperature, with a surface area of 40 m2 g−1.