Article
Chemistry, Physical
Sung Hyun Hwang, Soon Ki Kim, Jun-Tae Nam, Jong-Sung Park
Summary: The study optimized the performance of a cathode for protonic ceramic fuel cells by employing a triple-component composite cathode design, which significantly improved the performance of CH4 fuel and suggests a possible contribution of the oxygen reduction reaction at the cathode to the reformation of CH4 at the anode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Qingjie Wang, Sandrine Ricote, Yu Wang, Peter Vang Hendriksen, Jianqiang Wang, Ming Chen
Summary: In this study, a composite oxygen electrode was prepared by infiltrating a protonic-electronic conducting material into a proton-conducting backbone. The electrode performance was characterized using EIS and three electrode reaction processes were observed. The developed electrode showed low polarization resistance under varying operating conditions.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Multidisciplinary
Meng Wang, Chao Su, Zhonghua Zhu, Hao Wang, Lei Ge
Summary: The article discusses the design principles and materials of protonic ceramic fuel cells and their composite cathodes, exploring the advantages and challenges of operating at low temperatures, with a focus on the importance of high-performance cathode materials.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Electrochemistry
Qingjie Wang, Sandrine Ricote, Ming Chen
Summary: Protonic ceramic cells (PCCs), including protonic ceramic fuel cells (PCFCs) and electrolysis cells (PCECs), have advantages such as low activation energy for proton diffusion, fuel flexibility, absence of fuel dilution, and potentially lower costs. However, the design of efficient oxygen electrodes is a major challenge for PCCs. Research groups have made efforts to improve the oxygen electrode, resulting in enhanced power output and current density in PCCs. This review article summarizes the progress in oxygen electrodes for PCCs and provides potential pathways for further development of high-performance electrodes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Ning Wang, Baoyin Yuan, Chunmei Tang, Lei Du, Ruijie Zhu, Yoshitaka Aoki, Weibo Wang, Lixin Xing, Siyu Ye
Summary: This study accelerates the discovery of efficient mixed protonic-electronic conducting oxides by introducing the machine-learning (ML) method and establishing guidelines for rapid and accurate design and development. The experimental results confirmed the predicted data, showing satisfactory electrochemical performances of the PCC with the selected oxide. This research not only developed a promising air electrode for PCC but also opened a new avenue for ML-based development of mixed protonic-electronic conducting oxides.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Wenjuan Bian, Wei Wu, Baoming Wang, Wei Tang, Meng Zhou, Congrui Jin, Hanping Ding, Weiwei Fan, Yanhao Dong, Ju Li, Dong Ding
Summary: Researchers improved the electrochemical performance and stability of protonic ceramic fuel cells by acid treatment, enabling exceptional performance at lower temperatures.
Review
Energy & Fuels
Idris Temitope Bello, Shuo Zhai, Qijiao He, Chun Cheng, Yawen Dai, Bin Chen, Yuan Zhang, Meng Ni
Summary: Protonic ceramic fuel cells (PCFCs) are considered a potential and more efficient upgrade to conventional solid oxide fuel cells (SOFCs) due to their efficient operation at low and intermediate temperatures and nonfuel dilution at the anode during operation. This review provides a detailed exposition of material development strategies for major components of PCFCs and discusses credible science-backed recommendations for synthesis and fabrication of PCFCs materials. Additionally, the opportunities, challenges, and future directions for P-SOFCs are highlighted as well.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Ceramics
Zhi Yang, Jian Zhang, Bingxue Wu, Xin Zhao, Xuanlin Lu, Yicheng Zhao, Yongdan Li
Summary: A cobalt-free composite cathode composed of La0.6Sr0.4FeO3-& delta; phase and La1.2Sr0.8NiO4+& delta; phase was synthesized using self-assembly technology. The composite cathode exhibited excellent oxygen activity, electrical conductivity, and ionic conductivity, leading to the lowest polarization resistances at 700 degrees C in oxygen and air. The one-pot synthesized nanocomposite is a promising cathode material for protonic ceramic fuel cells.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Qi Huang, Shanshan Jiang, Yujia Wang, Jingjing Jiang, Yubo Chen, Jiahuan Xu, Hao Qiu, Chao Su, Daifen Chen
Summary: Protonic ceramic fuel cells (PCFCs) are more suitable for operation at low temperatures due to their smaller activation energy. However, the lack of durable and high-activity air electrodes limits the utilization of PCFC technology at reduced temperatures. In this study, a novel cobalt-containing composite cathode material (SFC) with ultra-high oxygen ionic conductivity, superior CO2 tolerance, and suitable thermal expansion coefficient (TEC) was designed. The SFC+BZCY composite electrode exhibited superior ORR activity and long-term durability, making it an excellent cathode for low-temperature PCFCs.
Article
Chemistry, Physical
Donguk Kim, Tae Kyeong Lee, Seungwoo Han, Yuhan Jung, Dong Gyu Lee, Mingi Choi, Wonyoung Lee
Summary: Unlike SOCs, PCCs utilize protons as primary charge carriers and show higher ionic conductivity with lower activation energy. They have advantages such as easy gas separation and no fuel dilution, making them an attractive option for commercialization. However, their performance and stability still need improvement compared to SOCs.
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Heon Jun Jeong, Wanhyuk Chang, Beum Geun Seo, Yun Sung Choi, Keun Hee Kim, Dong Hwan Kim, Joon Hyung Shim
Summary: This study presents the performance and durability of protonic ceramic fuel cells (PCFCs) in an ammonia fuel injection environment. The use of a palladium (Pd) catalyst improves the low ammonia decomposition rate in PCFCs with lower operating temperatures. By treating the anode with Pd catalyst, the performance of PCFCs is significantly enhanced, with a peak power density of 340 mW cm (-2) at 500 degrees C. The Pd catalysts are deposited through an atomic layer deposition post-treatment process, improving current collection and reducing polarization resistance in the low-temperature region.
Article
Materials Science, Ceramics
Anna Kasyanova, Artem Tarutin, Julia Lyagaeva, Xian-Zhu Fu, Dmitry Medvedev
Summary: The Y0.9Ca0.1Fe1-xCoxO3-delta phases with Co-doping show improved electrical conductivity and electrochemical polarisation resistance while maintaining good thermal properties. The simultaneous modification of both basic cationic sublattices of YFeO3 by calcium and iron tailors the functionality of the obtained compounds. The performance of a single SOFC with Y0.9Ca0.1Fe0.5Co0.5O3-delta electrode confirms the prospects of these modernized MIECs with acceptable electrochemical activity.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Dongyeon Kim, Kyung Taek Bae, Kyeong Joon Kim, Ha-Ni Im, Seungsoo Jang, Seeun Oh, Sang Won Lee, Tae Ho Shin, Kang Taek Lee
Summary: Protonic ceramic electrochemical cells (PCECs) have been attracting attention due to their ability to convert chemical fuels into electricity at low temperatures. However, conventional sintering conditions often result in nonstoichiometric electrolytes and electrode coarsening, leading to performance degradation. In this study, PCECs were fabricated through a microwave-assisted sintering process, which effectively suppressed undesirable diffusion and growth, thus producing PCECs with stoichiometric electrolytes and nanostructured fuel electrodes. The resulting PCECs demonstrated higher electrochemical performance compared to conventionally sintered PCECs, highlighting the effectiveness of the ultrafast sintering technique.
ACS ENERGY LETTERS
(2022)
Article
Thermodynamics
Huayang Zhu, Canan Karakaya, Robert J. Kee
Summary: This paper reports on the development of a model for a dual-channel protonic-ceramic fuel cell operating on ammonia fuel. The model takes into account the interactions of various physical and chemical processes in the cell, including heat conduction, flow, catalytic reactions, charge transfer, and ion transport. The model helps to understand the behavior of the fuel cell and provides insights into the partial ammonia decomposition and thermal control of the cell.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2022)
Article
Chemistry, Physical
Chuan Zhou, Dongliang Liu, Meijuan Fei, Xixi Wang, Ran Ran, Meigui Xu, Wei Wang, Wei Zhou, Ryan O'Hayre, Zongping Shao
Summary: In this study, the balance between hydration reaction and oxygen reduction reaction (ORR) over protonic ceramic fuel cells (PCFCs) cathode is optimized by controlling the air flow rate. Different cathode materials show different optimal performance under various operating conditions. The study provides important insights into the environmental demands of PCFC cathodes during operation and offers useful guidance for further performance optimization.
JOURNAL OF POWER SOURCES
(2023)
