Investigation of electrolyte parameters on the performance of gadolinium-doped ceria–based solid oxide fuel cell: an analytical study

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY

Journal of Solid State Electrochemistry Pub Date : 2024-08-13 DOI:10.1007/s10008-024-06028-9

Akash Patnaik, Pankaj Sharma

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Abstract

An analytical study of the effect of gadolinium-doped ceria (GDC) electrolyte parameters on the output voltage, output power, open circuit no-load voltage, and leakage current is carried out for solid oxide fuel cell (SOFC). Conductivity due to both ions and electrons is considered for GDC electrolytes. The model incorporates various polarization losses such as activation overpotential, concentration overpotential, and ohmic potential losses in order to study the effect of electrolyte parameters on output voltage. The output voltage and, hence, the power density obtained from the model closely match the experimental reports, thus validating the model. Subsequently, the open circuit no-load voltage model and no-load leakage current are used to study the effect of electrolyte thickness and electronic conductivity on it during no-load conditions. During loaded condition, the model relating the electronic current with the ionic current is employed to analyze the effect of various SOFC parameters governing the electronic current density. This study will be instrumental in designing SOFC with low leakage current density and high output power in order to enhance the performance of SOFC.

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电解质参数对掺钆铈固体氧化物燃料电池性能的影响：分析研究

对固体氧化物燃料电池（SOFC）的掺钆陶瓷（GDC）电解质参数对输出电压、输出功率、开路空载电压和泄漏电流的影响进行了分析研究。GDC 电解质考虑了离子和电子的导电性。该模型纳入了各种极化损失，如活化过电位、浓度过电位和欧姆电位损失，以研究电解质参数对输出电压的影响。从模型中得到的输出电压以及功率密度与实验报告非常吻合，从而验证了模型的有效性。随后，利用开路空载电压模型和空载泄漏电流研究了空载条件下电解质厚度和电子导电率对其的影响。在加载条件下，采用电子电流与离子电流相关模型来分析各种 SOFC 参数对电子电流密度的影响。这项研究将有助于设计具有低漏电流密度和高输出功率的 SOFC，从而提高 SOFC 的性能。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.