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Electrochemical performance of different carbon fuels on a hybrid direct carbon fuel cell

机译:混合直接碳燃料电池上不同碳燃料的电化学性能

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摘要

In this work, three processed carbon fuels including activated carbon, carbon black and graphite have been employed to investigate influence of the chemical and physical properties of carbon on the HDCFC performance in different anode atmospheres at 650–800 °C. The results reveal that the electrochemical activity is strongly dependent on crystalline structure, thermal stability and textural properties of carbon fuels. The activated carbon samples demonstrate a better performance with a peak power density of 326 mW cm in CO at 750 °C, compared to 147 and 59 mW cm with carbon black and graphite samples, respectively. Compared to the ohmic resistance, the polarization resistance plays a more dominated role in the cell performance. When replacing N by CO purge gas, the power density is the strongly temperature dependent due to the Boudouard reaction.
机译:在这项工作中,已使用三种处理过的碳燃料,包括活性炭,炭黑和石墨,以研究碳的化学和物理性质对650–800°C下不同阳极气氛中HDCFC性能的影响。结果表明,电化学活性在很大程度上取决于碳燃料的晶体结构,热稳定性和结构特性。活性炭样品表现出更好的性能,在750°C的CO中峰值功率密度为326mW·cm,而炭黑和石墨样品分别为147和59mW·cm。与欧姆电阻相比,极化电阻在电池性能中起更主要的作用。当用CO吹扫气体代替N时,由于Boudouard反应,功率密度在很大程度上取决于温度。

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