Article
Materials Science, Ceramics
Sanaullah Qamar, Saeed Ur Rehman, Hye-Sung Kim, Hafiz Ahmad Ishfaq, Rak-Hyun Song, Tak-Hyoung Lim, Jong-Eun Hong, Seok-Joo Park, Dong-Woo Joh, Kyunghan Ahn, Seung-Bok Lee
Summary: In this study, the effect of Zn substitution on the B-site of LNF cathode materials was investigated, resulting in enhanced electrical and electrochemical properties. The experimental results show that LNFZ(3) exhibits 25.4% lower polarization resistance and 52.3% higher maximum power density at 700 degrees C compared to LNF. Additionally, LNFZ(3) demonstrates robust operation under accelerated chromium-poisoning conditions.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Fangfang Wang, QuanSen Yang, Huining Wang, Zixin Zhang, Manuel E. Brito
Summary: The study revealed that sulfur poisoning can occur in cathode materials even without alkali earth components. Sulfur readily reacts with La2O3 in the cathode material to form La2O2SO4 at different temperatures, highlighting the temperature dependency of the chemical reaction. This prompts the exploration of new materials and strategies for developing cathode materials with high sulfur tolerance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Quan Yang, Guoqing Wang, Haodong Wu, Bayu Admasu Beshiwork, Dong Tian, Shiyue Zhu, Yang Yang, Xiaoyong Lu, Yanzhi Ding, Yihan Ling, Yonghong Chen, Bin Lin
Summary: The high-entropy cathode HEP has shown outstanding electrochemical performance in SOFCs, indicating promising potential applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
K. H. Tan, H. A. Rahman, M. S. Azami, U. A. Yusop, N. A. Baharuddin, M. I. Nor Ma'arof
Summary: This paper presents the development and characterization of a new composite cathode material BSCF-SDCC for low-temperature solid oxide fuel cell cathode application. The BSCF-SDCC composite cathode demonstrated excellent microstructural, chemical, and electrochemical properties. The composite cathode exhibited low polarization resistance and high conductivity, making it a promising candidate for low-temperature solid oxide fuel cell cathodes.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Wei Zhang, Yun Hang Hu
Summary: This article reviews recent advances in the design and fabrication of cathodes for efficient solid oxide fuel cells (SOFCs), including engineering cathode microstructures, fabrication techniques for cathode layers, and strategies to address segregation and poisoning issues.
Article
Chemistry, Physical
Takaaki Sakai, Masako Ogushi, Kohei Hosoi, Atsushi Inoishi, Hidehisa Hagiwara, Shintaro Ida, Masatsugu Oishi, Tatsumi Ishihara
Summary: YCoO3 is discussed as a novel cathode material for solid oxide fuel cells (SOFCs) due to its stable characteristics and ability to enhance cathodic performance without significant reaction with YSZ electrolyte.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Yuan Gao, Xiqiang Huang, Zhe Wang, Mengke Yuan, Juntao Gao, Zhe Lv, Lingling Xu, Bo Wei
Summary: This study evaluates the electrochemical performance of SCT10 cathodes in the presence of Cr impurities. The results demonstrate that Cr impurities lead to significant performance degradation, especially in wet conditions. Morphological damages and the formation of SrCrO4 and Co3O4 secondary phases on the cathode surface contribute to the deterioration of oxygen reduction kinetics and cathode activity. The study highlights the importance of surface Sr segregation in Cr deposition and emphasizes the need for attention in practical applications in solid oxide fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Binze Zhang, Shaowei Zhang, Hairui Han, Kaibin Tang, Changrong Xia
Summary: The partial replacement of iron element with gallium in PrBaFe2O5+delta can improve its electrochemical performance as a cathode material for intermediate-temperature solid oxide fuel cells. Specifically, PrBaFe1.9Ga0.1O5+delta exhibits improved physicochemical properties and electrochemical properties, such as an increased oxygen surface exchange coefficient (kchem) and enhanced oxygen dissociation process. Moreover, the anode-supported single cell with PBFG0.1 cathode shows a higher peak power density and good stability in long-term operation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Kyeong Eun Song, Harald Schlegl, Chan Gyu Kim, Ki Sang Baek, Yu Ri Lim, Jung Hyun Nam, Hyun Suk Kim, Jung Hyun Kim
Summary: The electrical conductivity characteristics of SmBaCo2O5+d (SBCO) and SmBa0.5Sr0.5Co2O5+d (SBSCO) were studied by changing the microstructure characteristics. SBCO and SBSCO with dense microstructure showed different conductivity behaviors, while the porous cathode showed high semiconductor conductivity. The porous cathode exhibited higher conductivity when the measurement temperature was decreased.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Chunyan Xiong, Peng Qiu, Wenying Zhang, Jian Pu
Summary: The influence of operating temperature on the Cr poisoning effect on the cathode of solid oxide fuel cells (SOFCs) was comprehensively studied. It was found that operating at 650 degrees C resulted in the most serious degradation. At lower temperatures, the degradation rate increased with higher operating temperatures, while at higher temperatures, the degradation rate slowed down with higher operating temperatures. By combining experimental results with first principles calculations, it was determined that the competition between the oxygen reduction reaction (ORR) activity and the formation reaction of SrCrO4 played a role in the fluctuating degradation rate of the cathode.
CERAMICS INTERNATIONAL
(2022)
Review
Chemistry, Physical
Lingxiao Lu, Yu Liu, Hualiang Zhang, Yujie Xu, Haisheng Chen
Summary: Solid oxide fuel cells (SOFCs) are efficient energy conversion devices that utilize triple conducting perovskite (TCP) cathode materials to convert chemical energy into electricity. This comprehensive review provides an overview of the current research status and advances in TCP cathodes for SOFCs, and discusses future research directions and potential applications. The review aims to facilitate the development of more efficient and cost-effective SOFCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Jing Shi, Chang Han, Haibo Niu, Youzhang Zhu, Sining Yun
Summary: Perovskite oxide RbBiNb2O7 exhibits good proton-transport behavior in the a-b plane due to its unique layered crystal structure, making it a promising candidate for electrolyte membrane applications in solid oxide fuel cells. The proton diffusion in RbBiNb2O7 is two-dimensional layered in nature and isolated by a higher energy barrier in the Rb-O and Nb-O layers, showing potential for efficient proton conductivity. This study provides theoretical evidence for the potential application of RbBiNb2O7 as an electrolyte in SOFCs by revealing its microscopic mechanisms of proton conductivity.
Article
Chemistry, Multidisciplinary
Priyanka Tiwari, Manish Yadav, Aiswarjya Bastia, G. C. Pandey, Chandana Rath
Summary: This study investigates the effect of Cr doping on the structure and magnetic properties of a GdMnO3 (GMO) perovskite, finding enhanced magnetic temperature and unusual magnetic switching behavior. The results indicate that Cr doping leads to a structural transformation and a decrease in the Jahn-Teller distortion factor of GdMnO3 (GMCO).
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Cheng Cheng Wang, Mortaza Gholizadeh, Bingxue Hou, Xincan Fan
Summary: The study investigated the integrated Cr and S poisoning of LSCF cathodes in solid oxide fuel cells, showing that such poisoning can lead to increased polarization and ohmic resistance, resulting in performance degradation of the cell. The degradation phenomenon caused by integrated Cr and S deposition was found to be more severe, indicating its higher unpredictability.
Article
Chemistry, Physical
Muneeb Irshad, Raazia Idrees, Khurram Siraj, Imran Shakir, Muhammad Rafique, Qurat ul Ain, Rizwan Raza
Summary: The cobalt doped perovskite cathode material LaNi1-xCoxO3-delta (x = 0.4, 0.6, 0.8) shows promising performance as a mixed ionic electronic conductor (MIEC) for intermediate temperature solid oxide fuel cells (IT-SOFC), especially with x = 0.6 due to its porous and well connected structure leading to enhanced electrochemical reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
