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Kazuma Shinozaki

Researcher at Toyota

Publications -  27
Citations -  945

Kazuma Shinozaki is an academic researcher from Toyota. The author has contributed to research in topics: Catalysis & Ionomer. The author has an hindex of 10, co-authored 21 publications receiving 653 citations. Previous affiliations of Kazuma Shinozaki include National Renewable Energy Laboratory & Colorado School of Mines.

Papers
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Journal ArticleDOI

Oxygen Reduction Reaction Measurements on Platinum Electrocatalysts Utilizing Rotating Disk Electrode Technique I. Impact of Impurities, Measurement Protocols and Applied Corrections

Kazuma Shinozaki, +6 more
- 01 Jan 2015 - 
TL;DR: In this paper, an area specific activity (SA) exceeding 2.0 mA/cm2 (20 mV/s, 25°C, 100 kPa, 0.1 M HClO4) for polished poly-Pt is an indicator of impurity levels that do not impede the accurate measurement of the ORR activity of Pt based catalysts.
Journal ArticleDOI

Oxygen Reduction Reaction Measurements on Platinum Electrocatalysts Utilizing Rotating Disk Electrode Technique II. Influence of Ink Formulation, Catalyst Layer Uniformity and Thickness

Kazuma Shinozaki, +7 more
- 01 Jan 2015 - 
TL;DR: In this paper, the performance of a rotating disk electrode (RDE) setup for electrochemical area (ECA) and oxygen reduction reaction (ORR) area specific activity and mass specific activity (MA) was characterized for a statistically significant number of independent samples.
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Suppression of oxygen reduction reaction activity on Pt-based electrocatalysts from ionomer incorporation

Kazuma Shinozaki, +5 more
- 01 Sep 2016 - 
TL;DR: In this paper, the impact of Nafion on the oxygen reduction reaction (ORR) activity was studied for Pt/C and Pt-alloy/C catalysts using thin-film rotating disk electrode (TF-RDE) methods in 0.1 M HClO4.
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Relative Humidity Dependence of Pt Utilization in Polymer Electrolyte Fuel Cell Electrodes: Effects of Electrode Thickness, Ionomer-to-Carbon Ratio, Ionomer Equivalent Weight, and Carbon Support

Kazuma Shinozaki, +2 more
- 01 May 2011 - 
TL;DR: In this article, the ratio of the electrochemically active Pt surface area of an MEA to the total PE of the MEA was analyzed at 20-100% RH, and 40-80°C by a newly developed technique using CO as a probe.
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Catalyst Poisoning Property of Sulfonimide Acid Ionomer on Pt (111) Surface

Kensaku Kodama, +7 more
- 01 Jan 2014 - 
TL;DR: Shinohara et al. as mentioned in this paper developed a new ionomer having two sulfonimide acid groups in its side chain ended with a hydrophobic group, instead of a sulfonic acid group, which has higher protonic conductivity and O2 permeability than Nafion.