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, 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
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)
Article
Materials Science, Multidisciplinary
Shintaro Kondo, Yaw Wang Chai, Kentaro Kanai, Lee Dosung, Manabu Watanabe, Shin Ishikawa, Takako Yamasita, Yoshisato Kimura
Summary: The precipitation behavior of intermetallic compounds, such as C14 Laves phase and Chi phase, and oxidation behavior of an Fe-20Cr-0.5Nb-2Mo high-Cr ferritic alloy were investigated at high temperatures. The formation of protective Cr2O3 and Laves precipitates on the surface was observed during aging/oxidation heat treatment. The precipitation of Chi phase, which is not supposed to be formed, was also observed at the alpha/Cr2O3 interfaces. In the long-term oxidation, the coarsening of the Chi precipitates resulted in localized stress concentrations and abnormal Cr2O3 formation, accelerating the growth of surface Cr2O3.
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
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
Jun Li, Yujun Zhang, Kai Zhao, San Ping Jiang, Min Chen
Summary: In this paper, the authors study the characteristics of chromium evaporation, oxide scale growth, and deposition of chromium on the oxygen reduction reaction (ORR) on (La,Sr)MnO3 (LSM) cathode in intermediate-temperature solid oxide fuel cells. The results indicate that the volatilization of chromium is influenced by the composition and morphology of the oxide scale, and the deposition of chromium on the LSM cathode degrades the electrochemical activity of the ORR. These findings provide insights into the mechanism of chromium poisoning in intermediate-temperature conditions.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Chengzhi Sun, Yu Kong, Yongchao Niu, Xiaoju Yin, Naiqing Zhang
Summary: As a classical family of high-performance cathode materials, mixed ionic and electronic conductor (MIEC) is crucial for the low-temperature operation and high efficiency of solid oxide fuel cells. While Fe-based double perovskites have advantages of low cost, good thermal compatibility with the electrolyte, and high-temperature stability, their electrochemical properties for oxygen reduction reaction are unsatisfactory. This study demonstrates that substituting Zr for Fe in NdBaFe2O6??Δ (NBF) lattice can enhance oxygen vacancy concentration and the position of O p-band center, leading to improved oxygen reduction performance for the Zr-doped NBF cathode.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Analytical
Chunjiao Liu, Liping Sun, Qiang Li, Lihua Huo, Hui Zhao
Summary: The phase structure, direct current conductivity, oxygen mobility characteristics, and electrochemical properties of cobalt-based high-entropy perovskite oxides with different alkaline earth metal contents were studied in this paper. It was found that by continuously substituting rare earth elements with alkaline earth elements in high-entropy materials, the content of oxygen vacancies increased and the electrochemical performance was enhanced. The high-entropy oxide La0.2Pr0.2Ba0.2Sr0.2Ca0.2CoO3 exhibited a chemical oxygen diffusion coefficient (Dchem) of 2.8 x 10-6 cm2 s-1 and a surface exchange coefficient (Kchem) of 9.1 x 10-3 cm s-1 at 700 degrees C. The anode-supported fuel cell using this high-entropy oxide achieved a peak power density of 792 mW cm-2 at 700 degrees C, showing excellent long-term stability and CO2 resistance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)
