What kind of PCFC material physical property values do we need? —From a system efficiency perspective
What kind of PCFC material physical property values do we need? —From a system efficiency perspective
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我们需要哪种PCFC材料的物理性能值？——从系统效率的角度来看
DOI：
10.1016/j.apenergy.2024.125132
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发表时间：
2025-03-01
期刊：
影响因子：
11.000
通讯作者：
Takuto Araki
中科院分区：
文献类型：
--
作者：
Kunpeng Li;Takeru Murakami;Yohei Nagata;Yuichi Mikami;Kosuke Yamauchi;Tomohiro Kuroha;Yuji Okuyama;Yasunobu Mizutani;Masashi Mori;Takuto Araki
·<sub>对H2</sub>供电的PCFC系统进行了数值模拟。·建立了系统电效率与PCFC物理性能的关系。·揭示了> 70%系统电效率所需的质子和空穴电导率。·研究> 70%系统电效率所需的电极性质。·为开发实用级PCFC提供理论数据支持。摘要质子陶瓷燃料电池（PCFC）由于其理论上高的燃料利用率和在中温（400-600 °C）下优异的能量效率而引起了人们的极大兴趣。虽然PCFC的性能近年来已经显著提高，但由于PCFC系统中的能量损失，系统电效率通常低于相应的电池能量效率。本研究的重点是实现>70%的系统电效率（较低的热值-LHV）在<sub>H2</sub>供电的PCFC系统。所需的属性值，如电导率和质子和空穴在电解质中的扩散系数，以及交换电流密度和电极处的反应电阻，揭示了通过一个验证的数值模型相比，高性能的PCFC的实验结果。它为推进能够实现>70%系统电效率的高性能PCFC提供了重要的经验见解。
• H <sub>2</sub> -powered PCFC system is numerically created and simulated. • System electrical efficiencies and PCFC physical properties relationship is established. • Proton and hole conductivities required for >70 % system electrical efficiency are revealed. • Electrode properties required for >70 % system electrical efficiency are investigated. • Theoretical data support for the development of practical-level PCFCs. Abstract Protonic ceramic fuel cells (PCFCs) have garnered significant interest due to their theoretically high fuel utilization and excellent energy efficiency at intermediate temperatures (400–600 °C). While the performance of PCFCs has improved dramatically in recent years, the system electrical efficiency is often lower than the corresponding cell energy efficiency due to energy loss in a PCFC system. This study focuses on achieving >70% system electrical efficiency (lower heating value-LHV) in a H <sub>2</sub> -powered PCFC system. The required property values such as the conductivities and diffusion coefficients of proton and hole in the electrolyte, as well as the exchange current densities and reaction resistances at electrodes are revealed through a validated numerical model compared to the experimental results of a high-performance PCFC. It offers significant empirical insights for advancing high-performance PCFCs capable of achieving >70% system electrical efficiency.