2023/12/19

Construction of Warped Graphitic Layers from Fullerene Soot and Study of Their Catalytic Oxygen Reduction Activity https://doi.org/10.1021/acs.jpcc.3c06030 Platinum is widely used in cathode catalysts for fuel cells; however, it is expensive, with limited reserves. Hence, the development of non-Pt catalysts has been extensively studied. Carbon alloy catalysts are considered the most potent alternatives to Pt-based catalysts. However, the catalytic activity of carbon, which is the primary constituent of carbon alloy catalysts, in oxygen reduction reactions (ORRs) has been insufficiently investi...続きを読む »

2023/11/23

Development of an electrochemical system to measure high-temperature oxygen reduction for the electrochemical evaluation of Pt/C and non-precious metal catalysts https://doi.org/10.1016/j.ijhydene.2023.11.131 In polymer electrolyte fuel cells, the oxygen reduction reaction (ORR) rate increases at high temperatures. Therefore, ORR catalysts must be designed for use at high temperatures and require evaluation. To address the problem of decreased dissolved oxygen concentrations in conventional channel flow double electrode (CFDE) systems, this study develops a CFDE system capable of electrochemic...続きを読む »

2023/11/02

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2023/09/23

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2023/09/03

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2023/08/05

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2023/07/28

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2023/07/16

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2023/06/01

Molecular-level understanding of carbon materials by temperature-programmed desorption https://doi.org/10.7209/carbon.020203 A wide variety of surface functional groups, such as oxygen-containing ones and hydrogen, exist at the graphene edge sites of carbon materials. Because the presence of these functional groups greatly affects the chemical properties of carbon-based materials produced from them, knowledge of the edge site state is essential to understand carbon chemistry. This review describes the analyses of edge sites and carbon-material structures by temperature-programmed desorption (T...続きを読む »

2023/03/23

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