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The formation of fuel cell electrodes is based on the ink processing approaches including ink preparation, coating, and drying, during which the ink is a critical intermediate state determining the electrode structure and performance. In this work, the interrelations between the ink microstructure and the porous structure of the resulting material have been established. We found that the nanoink structure with higher cohesion energy and network development would lead to a microporous layer (MPL) with fewer cracks and higher consistency. (See Zhekun Chen et al., Pages 1-12)
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Forcing the low concentration of oxygen flow into the CL, the baffle could improve voltage and distribution uniformity by reducing the nonuniformity of the oxygen distribution on the CL’s surface. Compared with Case 1, voltages and uniformity of Case 4 creased by 3.7% and 7.2%. (See Guodong Xia et al., Pages 250-262)
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Endothermic fuel plays the dual role as the fuel and coolant in the hypersonic aircrafts. Hydrogenation of jet fuels could decrease the aromatic content and increase the cycloalkane content: the former are prone to initiate secondary reactions to form coking precursors, while the latter could act as the hydrogen donor and release hydrogen, which will terminate the radical propagation reactions. As a result, the anti-coking performance could be improved significantly. This work will provide the guidance for the design and optimization of advanced endothermic fuel. (See Qing Liu et al., Pages 35-42)
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This research presents a new method of combining biomass chemical looping for H2 production with reductive calcination of CaCO3. This approach is intended to address the challenges faced by the carbonate industry, such as the need for high temperatures, excessive energy consumption, and substantial amounts of CO2 emissions. The inclusion of H2 atmosphere significantly reduces the temperature required for CaCO3 decomposition, resulting in the in-situ conversion of CO2 and the production of valuable syngas. Through energy efficiency and life cycle assessment, this study demonstrates the low-carbon benefits associated with this coupling process when used in carbonate calcination treatment. (See Peng Jiang et al., Pages 231-240)
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2024年 第69卷 第5期 刊出日期:2024-05-28
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