Optimisation of screen-printed La0.6Sr0.4CoO3-δ cathode film for intermediate temperature proton-conducting solid oxide fuel cell application

International Conference on Sustainable Energy and Green Technology 2018

能源学;生态环境科学

Abdul Samat, Abdullah^1^2 ; Rao Somalu, Mahendra^1 ; Muchtar, Andanastuti^1^3 ; Akidah Baharuddin, Nurul^1 ; Osman, Nafisah^4

Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor

43600, Malaysia^1

Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), Kampus UniCITI Alam, Sungai Chuchuh, Padang Besar, Perlis

02100, Malaysia^2

Centre for Materials Engineering and Smart Manufacturing, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi, Selangor

43600, Malaysia^3

Faculty of Applied Sciences, Universiti Teknologi MARA, Perlis, Arau

02600, Malaysia^4

关键词: Area-specific resistances;    Chemical additive;    Electrical conductivity;    Electrochemical performance;    Intermediate temperatures;    Proton-conducting solid oxide fuel cells;    Symmetrical cells;    Thin-film properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/268/1/012137/pdf
DOI  :  10.1088/1755-1315/268/1/012137

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The effect of thin film properties on the electrochemical performance of La0.6Sr0.4CoO3-δ (LSC) cathode was investigated. A single phase of sol-gel derived LSC cathode powder is produced using ethylene glycol (EG) and activated carbon (AC), pressed into a pellet and turned into an LSC cathode slurry. The slurry is screen printed with different printing numbers (2, 4, 6 and 8 times) on the BaCe0.54Zr0.36Y0.1O3 (BCZY) electrolyte substrate to fabricate LSC|BCZY|LSC symmetrical cell. The EG-based LSC cathode recorded the lowest area specific resistance (ASR) value (0.11 Ω cm2) in the symmetrical cell fabricated with printing number of 2 times (film thickness = 3.90 ± 0.18 μm, film porosity = 23.09 ± 0.42 %). The AC-based LSC cathode requires a high printing number of 6 times (film thickness = 6.76 ± 0.50 μm, film porosity = 21.98 ± 0.52 %) to obtain the lowest ASR value (0.15 Ω cm2) because the electrical conductivity of the AC-based LSC cathode is lower than that of the EG-based LSC cathode. Overall, this work shows that the variations in the ASR values of the same LSC materials prepared with different chemical additives are affected by the properties of the printed thin film.