Review
Chemistry, Multidisciplinary
Kairat A. Kuterbekov, Alexey Nikonov, Kenzhebatyr Zh Bekmyrza, Nikita B. Pavzderin, Asset M. Kabyshev, Marzhan M. Kubenova, Gaukhar D. Kabdrakhimova, Nursultan Aidarbekov
Summary: This review summarizes various types of solid oxide fuel cells (SOFC) and describes their structural features, advantages, and disadvantages. Among the well-studied dual-chamber SOFC, those with anode-supported design and oxygen-ion conducting electrolyte are found to be the most suitable for operation at temperatures below 800 degrees C. Other promising types for low-temperature operation include SOFC with proton-conducting electrolyte and electrolyte-free fuel cells, although further research and development are needed for commercialization.
Article
Materials Science, Ceramics
Bo -Ram Won, Yo Han Kim, Seungyeon Jo, Jae -ha Myung
Summary: This study reports a phase-controlled, bendable, ultra-thin 3YSZ electrolyte with high flexural strength and improved ohmic resistance. The highest cell performance among reported flexible SOFCs is achieved using conventional electrodes, with a maximum power density of 0.86 W cm(-2) at 900 degrees C. This study provides a framework for developing flexible SOFCs as next-generation power sources for mobile devices with high volumetric power.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Review
Chemistry, Physical
Mandeep Singh, Dario Zappa, Elisabetta Comini
Summary: Fuel cells are becoming increasingly popular as a highly efficient, clean, and sustainable energy conversion source with different types having their own pros and cons. Solid oxide fuel cells (SOFC) are gaining attention for their high efficiency and versatility in utilizing various fuels apart from hydrogen. Recent advancements mainly focus on two types of SOFC stack designs and their implications for medium and large power requirements.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Sergey N. Marshenya, Artem D. Dembitskiy, Dmitry S. Fedorov, Alexey G. Scherbakov, Ivan A. Trussov, Olga Emelianova, Dmitry A. Aksyonov, Anton L. Buzlukov, Nikolai A. Zhuravlev, Tatiana A. Denisova, Nadezhda I. Medvedeva, Artem M. Abakumov, Evgeny V. Antipov, Stanislav S. Fedotov
Summary: This paper reports a new member of the KTiOPO4-structured materials, NaGaPO4F, with sodium-ion conductivity. The study investigated the sodium-ion mobility in NaGaPO4F using a combination of experimental and computational methods.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Inorganic & Nuclear
Dattatray S. Dhawale, Saheli Biswas, Gurpreet Kaur, Sarbjit Giddey
Summary: Finding solutions to tackle climate change and decarbonizing the energy sector are significant challenges for the global community. Green ammonia, with its hydrogen content, is considered an ideal carbon-free fuel for power generation in direct ammonia solid oxide fuel cells (DASOFCs). However, there are technological challenges that need to be addressed, such as ammonia safety, stability, emission issues, and power density limitations. This review discusses the role of green ammonia as an energy carrier, technological challenges, recent advancements, and future recommendations for efficient DASOFC systems.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Review
Materials Science, Ceramics
Anjana P. Anantharaman, Hari Prasad Dasari
Summary: Pyrochlore structure materials have unique crystal structure, electrical properties, and thermal stability, making them widely applicable in catalysis, nuclear waste encapsulation, sensors, and electronic devices. The ionic/electronic conductivity of these materials is crucial for their performance in solid oxide fuel cells, where factors like cation radius ratio, oxygen migration, vacancy formation, and dopant addition play significant roles in enhancing the conductivity. Research has shown that controlling these factors can improve the ion and electron transport properties of pyrochlore materials, ultimately leading to better performance in various applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Haoran Wang, Ze Lei, Weiwei Jiang, Xiang Xu, Junmeng Jing, Ziwei Zheng, Zhibin Yang, Suping Peng
Summary: Bismuth oxide and scandia co-doped zirconia powders were prepared via a citrate sol-gel method. The addition of Bi2O3 promoted the sintering process and increased the electrical conductivity of scandia stabilized zirconia. The resulting material exhibited high power density in electrolyte-supported cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Mingrui Wei, Hao Ge, Jingwen Shuang, Yihui Liu, Xiyong Chen, Shaohua Zhong
Summary: The study explores the potential of hematite as an electrolyte for low-temperature solid oxide fuel cells and develops a compatible composite of hematite and GDC to enhance performance. The results demonstrate good chemical and physical compatibility between hematite and GDC, with sufficient ionic conductivity for low-temperature SOFC requirements. Additionally, electrochemical impedance tests indicate that the hematite-GDC composite performs the best among tested materials.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Chemistry, Physical
Nor Anisa Arifin, Abdullah A. Afifi, Ayesha Samreen, R. S. R. M. Hafriz, Andanastuti Muchtar
Summary: Scandia-stabilized zirconia (ScSZ) has higher conductivity compared to yttria stabilized zirconia (YSZ), but undergoes phase structure transition, affecting stability in SOFC applications. 10Sc1CeSZ, a commonly doped ScSZ, experiences Ce4+ - Ce3+ transition, resulting in lower fracture strength. Co-dopants such as Nd, Sm, and Gd show promise in enhancing the stability of ScSZ in reduced SOFC environments.
SOLID STATE IONICS
(2023)
Article
Materials Science, Multidisciplinary
A. K. M. Asif Iqbal, A. K. M. Parvez Iqbal, Dewan Muhammad Nuruzzaman
Summary: In this study, a Sm0.10Ga0.10Ce0.80O2-8 electrolyte material named SGDC was prepared and evaluated for its ionic conductivity and electrical performance. The SGDC showed a low activation energy of 0.49 eV and high ionic conductivity, current density, and power density at a lower operating temperature of 400 degrees C, indicating its potential as an electrolyte for low-temperature solid oxide fuel cells.
Article
Materials Science, Ceramics
Jie Gao, Zhi Liu, Muhammad Akbar, Cui Gao, Wenjing Dong, Yuanjing Meng, Xiaoqian Jin, Chen Xia, Baoyuan Wang, Bin Zhu, Hao Wang, Xunying Wang
Summary: Introducing semiconductor ZnO into YSZ electrolyte layer to construct a heterointerface can enhance the proton conductivity and improve the efficiency of low-temperature SOFC.
CERAMICS INTERNATIONAL
(2023)
Article
Thermodynamics
Mohsen Sadeghi, Moharram Jafari, Yashar S. Hajimolana, Theo Woudstra, P. V. Aravind
Summary: This study aimed to analyze and compare the thermodynamic performance and size of two types of solid oxide fuel cell (SOFC) systems, revealing that the SOFC-H system based on proton-conducting electrolyte shows higher efficiency and performance in certain aspects, making it favorable to use thin cells to improve efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
S. Bremm, S. Dolling, W. Becker, L. Blum, Ro Peters, J. Malzbender, D. Stolten
Summary: Solid oxide fuel cells provide electrical energy through a highly efficient direct transformation of chemical energy stored in fuels, and understanding the sealing loading conditions and failure assessment is crucial for current and future SOFC designs. The investigation of glass ceramics sealing failure in the present study reveals the complex nature of sealing failure mechanisms and the importance of material properties in different operating temperatures.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Mahrukh Bukhari, Munazza Mohsin, Zohra Nazir Kayani, Shahzad Rasool, Rizwan Raza
Summary: This paper analyzed the potential materials A(2)Ce(2)O(7-δ) (A = La+3, Nd+3, Bi+3) for clean energy devices, specifically for conventional and single-component solid oxide fuel cells (SC-SOFCs). The samples prepared by the wet chemical route showed a defected fluorite cubic structure, with dopants confirmed by FTIR analysis. UV-vis, fuel cell testing apparatus, and EIS were used to study the optical behavior, fuel cell performance, and electrochemical behavior, respectively. The results showed that Nd2Ce2O7-δ performed the best as a single-component fuel cell, with good compatibility with semiconducting conductors such as ZnO and NCAL.
Article
Chemistry, Multidisciplinary
Tao Li, Xue-Qiang Zhang, Nan Yao, Yu-Xing Yao, Li-Peng Hou, Xiang Chen, Ming-Yue Zhou, Jia-Qi Huang, Qiang Zhang
Summary: By regulating the electrolyte structure of anions using TPFPB anion acceptors, a stable anion-derived SEI was constructed to improve the stability and cycling performance of lithium metal batteries under practical conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Ceramics
Zhangwei Chen, Zhiyuan Gong, Ziyong Li, Zhongqi Zhu, Piao Qu, Changshi Lao, Pei Wang, Changyong Liu, Alan Atkinson
CERAMICS INTERNATIONAL
(2020)
Article
Chemistry, Multidisciplinary
Ran Gao, Abhinav C. P. Jain, Shishir Pandya, Yongqi Dong, Yakun Yuan, Hua Zhou, Liv R. Dedon, Vincent Thoreton, Sahar Saremi, Ruijuan Xu, Aileen Luo, Ting Chen, Venkatraman Gopalan, Elif Ertekin, John Kilner, Tatsumi Ishihara, Nicola H. Perry, Dallas R. Trinkle, Lane W. Martin
ADVANCED MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Ozden Celikbilek, Andrea Cavallaro, Gwilherm Kerherve, Sarah Fearn, Odette Chaix-Pluchery, Ainara Aguadero, John A. Kilner, Stephen J. Skinner
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Kulbir K. Ghuman, Elisa Gilardi, Daniele Pergolesi, John Kilner, Thomas Lippert
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Instruments & Instrumentation
M. Niania, M. Sharpe, R. Webb, J. A. Kilner
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2020)
Article
Multidisciplinary Sciences
Navaratnarajah Kuganathan, Michael J. D. Rushton, Robin W. Grimes, John A. Kilner, Evangelos I. Gkanas, Alexander Chroneos
Summary: Atomistic simulation methods show that the most favourable disorder process in tetragonal garnet-type Li7La3Zr2O12 involves loss of Li2O, resulting in lithium and oxygen vacancies that promote vacancy mediated self-diffusion. The activation energy for lithium migration is much lower than that for oxygen, indicating that oxygen diffusion in this material can be facilitated at higher temperatures.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Ran Gao, Abel Fernandez, Tanmoy Chakraborty, Aileen Luo, David Pesquera, Sujit Das, Gabriel Velarde, Vincent Thoreton, John Kilner, Tatsumi Ishihara, Slavomir Nemsak, Ethan J. Crumlin, Elif Ertekin, Lane W. Martin
Summary: The efficiency of solid-oxide fuel cells and electrolyzers is determined by solid-gas interactions at electrode surfaces. The study on La0.8Sr0.2Co0.2Fe0.8O3 reveals a strong correlation between surface-gas kinetics and crystal orientation of perovskite electrodes, with (111)-oriented surfaces showing higher activity. Electrochemical impedance spectroscopy and electrical conductivity relaxation measurements indicate a surface-orientation dependency of gas-exchange kinetics, with all surfaces having the same reaction mechanisms and rate-limiting steps.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yao Zhao, John Kilner, Tatsumi Ishihara, Kazunari Yoshizawa, Aleksandar Staykov
Summary: In this study, the impact of the partial covalent character of cations on their ionic diffusivity in La1-xSrxGayMg1-yO3-delta perovskite was computationally determined using density functional theory. The results revealed that cations with stronger covalent character had lower diffusivity compared to cations with more ionic character. The migration pathway of B-site cations was found to be curved to maximize electronic interactions with surrounding oxide ions.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Electrochemistry
V Thoreton, M. Niania, J. Druce, H. Tellez, J. A. Kilner
Summary: Measurements of oxygen diffusivity in ceramic samples of the mixed ionic electronic conductor La0.6Sr0.4Co0.2Fe0.8O3_(delta) (LSCF6428) revealed the presence of grain boundary tails in diffusion profiles at temperatures below 600 degrees C. Analysis of these tails provided values for the grain boundary diffusion products (D-gb delta). The activation enthalpies for both grain boundary and lattice diffusion were similar, indicating a common diffusion mechanism. Comparison with literature values showed that the D-gb delta values obtained for LSCF6428 were the highest recorded for any oxide material. The reasons for this high value, including nonstoichiometry of the lattice and the presence of twin boundaries, were discussed.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Zijie Sha, Gwilherm Kerherve, Matthijs A. van Spronsen, George E. Wilson, John A. Kilner, Georg Held, Stephen J. Skinner
Summary: A study investigated the surface reactions and composition of a mixed ionic and electronic conducting perovskite oxide. The results showed that the surface lattice oxygen is the significant redox active species, rather than the transition metal cations. The study also observed higher concentrations of surface oxygen vacancies and the formation of hydroxyl groups in water vapor. Furthermore, the study found that the concentration of Sr surface species increased over time in dry oxygen, while less Sr contents were observed in water vapor. The findings provide crucial understanding for the design and performance of electrocatalytic electrodes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Matthaeus Siebenhofer, Andreas Nenning, George E. Wilson, John A. Kilner, Christoph Rameshan, Markus Kubicek, Juergen Fleig, Peter Blaha
Summary: This study investigates the effects of sulphur adsorbates and other SOFC poisons on the electronic and ionic properties of an SrO-terminated LSC surface and its oxygen exchange kinetics. Experimental and computational methods were used to analyze the surface modifications caused by the adsorbates. The results show that sulphur adsorbates strongly deactivate the LSC surface and affect oxygen vacancy formation energies. The study also reveals a correlation between work function changes and redistributed charge with the acidity of the adsorbed oxide.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Zijie Sha, Zonghao Shen, Eleonora Cali, John A. A. Kilner, Stephen J. J. Skinner
Summary: The effect of operating conditions on the surface composition and evolution of a perovskite oxide, (La0.8Sr0.2)(0.95)Cr0.5Fe0.5O3-delta (LSCrF8255), was investigated. Different environments were used to analyze the perovskite materials' applications as electrodes in electrochemical energy conversion devices. A variety of surface characterization techniques were employed, and the results showed that the operating conditions had a significant impact on surface segregation and phase separation.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Energy & Fuels
Rowena H. Brugge, Richard J. Chater, John A. Kilner, Ainara Aguadero
Summary: The current lithium ion battery technology poses safety risks, with the development of solid ceramic electrolytes offering a safer alternative for the next generation of all-solid-state batteries. However, the lithium diffusion behavior in these solid electrolytes and transport properties at the metal anode interface are not well understood. The proposed methodology aims to obtain lithium diffusion coefficients of bulk solid ceramic electrolytes and study their interfaces with electrodes for further optimization and performance enhancement in solid-state lithium batteries and hybrid systems.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Chemistry, Physical
Vincent Thoreton, Mathew Niania, John Kilner
Summary: The study investigates the oxygen transport kinetics under humidified oxygen conditions through isotopic exchange depth profiling. It reveals that the surface exchange coefficient of water is higher than that of molecular oxygen, suggesting that water tends to occupy the active exchange sites at the material surface and exchange oxygen more rapidly than molecular oxygen.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Mathew A. R. Niania, Andrew K. Rossall, Jaap A. Van den Berg, John A. Kilner
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
