Article
Chemistry, Physical
Peiyi Lin, Xi Xu, Shoufu Yu, Yanru Yin, Martin Andersson, Lei Bi
Summary: The mismatch of the coefficients of thermal expansion between cathode and electrolyte is one of the challenges for high-performance proton-conducting solid oxide fuel cells. This study introduces the negative thermal expansion component YMO on the cathode to overcome this problem and improves cell performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Hua Tong, Wenjing Hu, Min Fu, Chunli Yang, Zetian Tao
Summary: Nickel-doped barium ferrate with triple conducting ability is developed as cathodes for proton-conducting solid oxide fuel cells (H-SOFCs), showing impressive electrochemical performance at intermediate temperatures. The high electrocatalytic capacity of the nickel-doped barium ferrate cathode is attributed to its significant proton conductivity, which is enhanced by the presence of nickel and the regulated composition and structure of the composite cathode.
Article
Materials Science, Ceramics
Ziye Zhang, Deti Xie, Jiupai Ni, Chengsheng Ni
Summary: BYC is a prototypical superconducting oxide with a superior mixed electronic and ionic conductivity, and Fe doping can enhance its electrochemical performance and power output.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Xuan Yang, Yanru Yin, Shoufu Yu, Lei Bi
Summary: The BSCF+Co3O4 composite material is found to be a promising cathode for H-SOFCs, offering a solution to the thermal mismatch problem between the cathode and electrolyte. The addition of Co3O4 enhances the contact between the BSCF cathode and the electrolyte and also improves the catalytic activity of the cathode, resulting in significantly improved performance for H-SOFCs.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Ceramics
Lele Wang, Yueyuan Gu, Hailu Dai, Yanru Yin, Lei Bi
Summary: BaSrInFeO5 (BSIF) is a new cathode material designed for proton-conducting solid oxide fuel cells (SOFCs) by modifying the Ba2In2O5 proton conductor with Sr and Fe cations. Sr doping improves the chemical stability, formation of oxygen vacancies, and proton mobility of the material. Experimental studies and first-principles calculations demonstrate that an H-SOFC using the BSIF cathode achieves a high peak power density of 1192 mW cm-2 at 700 oC, surpassing previous reports. This study suggests that derived cathode materials from less-studied Ba2In2O5 could offer new material selections for H-SOFCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Green & Sustainable Science & Technology
Xiuqing Lv, Huili Chen, Wei Zhou, Si-Dian Li, Fangqin Cheng, Zongping Shao
Summary: In this study, the issue of CO2 poisoning in SrCoO3-delta 5-based materials was addressed by co-doping iron, zirconium, and yttrium. The newly formed material, SCFZY, exhibited significant CO2-tolerance as a cathode for solid oxide fuel cells (SOFCs), along with high power density and good durability.
Article
Materials Science, Multidisciplinary
Yufeng Li, Shoufu Yu, Hailu Dai, Yangsen Xu, Lei Bi
Summary: In this study, Sr-doped LaMnO3 (LSM) is coated with TiO2 to create the LSM + TiO2 cathode. It is found that TiO2 modifies the electronic structure at the LSM/TiO2 interface, allowing for charge accumulation and enhanced oxygen diffusion ability. Using LSM + TiO2 as a cathode for proton-conducting SOFCs operating at intermediate temperatures, the fuel cell demonstrates enhanced cell output performance and achieves the highest reported value for H-SOFCs with LSM cathodes.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Xi Xu, Yangsen Xu, Jinming Ma, Yanru Yin, Marco Fronzi, Xianfen Wang, Lei Bi
Summary: The study demonstrates that tailoring the electronic structure of perovskite oxide with Mo-doping leads to improvements in cathode materials for proton-conducting solid oxide fuel cells. The Mo-doping changes the electronic structure of the oxide, making the metal-oxygen bond less strong and the surface more active towards oxygen reduction, resulting in more feasible oxygen vacancy formation critical for protonation. The electric field induced by Mo-doping provides an additional driving force for proton movement, accelerating proton migration in the oxide and improving cathode performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Ceramics
Yangsen Xu, Shoufu Yu, Yanru Yin, Lei Bi
Summary: LiCoO2, a material widely used in Li-ion batteries, was found to be suitable as a cathode material for H-SOFCs. The evaporation of Li in LiCoO2 led to the in-situ formation of a LiCoO2+Co3O4 composite, which greatly enhanced the performance of the cathode in H-SOFCs. The formation of Co3O4 due to Li-evaporation decreased the formation energy of oxygen vacancies, resulting in improved cathode performance.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Materials Science, Ceramics
Keyou Shi, Yanru Yin, Zengming Tang, Shoufu Yu, Qiucai Zhang
Summary: A slight deficiency of Ba in BaCoO3 improves its chemical stability, protonation, and surface catalytic activity, resulting in enhanced fuel cell performance.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Shoucheng He, Yanru Yin, Lei Bi, Hailu Dai
Summary: A new composition, called PLASM, is proposed as a solution for the unsatisfactory performance of manganate cathodes in intermediate temperatures. Theoretical calculations and experimental studies show that PLASM has better performance and chemical stability than traditional cathodes, and it demonstrates improved performance in H-SOFCs.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Rui Zhou, Yueyuan Gu, Hailu Dai, Yangsen Xu, Lei Bi
Summary: By synthesizing nominal PrxSr0.5MnO3-d materials, new Pr0.5Sr0.5MnO3-d (PSM50)+ PrO2_(x) composite cathodes for proton-conducting solid oxide fuel cells (SOFCs) were developed. The exsolution of PrO2_(x) particles was observed, increasing with the amount of Pr in PrxSr0.5MnO3-d. A Pr0.7Sr0.5MnO3-d (PSM70) cathode enabled the highest fuel cell output reported for H-SOFCs with manganate cathodes. The construction of a PSM50/PrO2 heterostructure interface accelerated the cathode oxygen reduction reaction (ORR) kinetics and demonstrated excellent electrochemical performance and chemical stability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Yongji Gao, Mingming Zhang, Lele Fan, Zetian Tao
Summary: Recent findings have shown that the utilization of a novel composite cathode, consisting of LSCF and LNCOx, can significantly enhance the performance of proton-conducting solid oxide fuel cells. The novel composite cathode exhibits improved catalytic activity and durability, achieving a maximum power density of 1283 mW cm-2.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Shuai Wu, Yinhua Liu, Chao Wang, Hailu Dai, Xianfen Wang, Lei Bi
Summary: The performance of LaNi0.5Fe0.5O3-delta material for H-SOFCs has been improved through a Zn-doping strategy, resulting in higher peak power density and lower polarization resistance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Min Fu, Kailin Li, Yang Yang, Qiaoling Zeng, Long Zeng, Zetian Tao
Summary: The new composite cathode material consisting of LaNi0.6Fe0.4O3-δ (LNF) and Sm0.5Sr0.5CoO3-δ (SSC), namely LNF-SSC73, shows promising electrochemical performance in proton-conducting solid oxide fuel cells, indicating its potential for improving fuel cell performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Materials Science, Ceramics
Inna A. Zvonareva, Dmitry A. Medvedev
Summary: Solid oxide fuel cells are efficient energy conversion devices, but the traditional yttria-stabilized zirconia materials used for electrolytes require high temperatures. This study analyzes the potential of barium stannate as a proton-conducting electrolyte material and confirms its suitability.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Elena G. Kalinina, Darya S. Rusakova, Kirill S. Shubin, Larisa V. Ermakova, Elena Yu. Pikalova
Summary: This study investigates the direct electrophoretic deposition (EPD) of thin-film Ce0.8Sm0.2O1.9 (SDC) electrolyte on porous nonconductive NiO-BaCe0.8Sm0.2O3 (BCS) and NiO-SDC substrates. The addition of Co3O4, TiO2, and Al2O3 oxides in the suspensions improves the electrolyte sintering. The introduction of nanosized SDC powder into the suspensions achieves high zeta potential values for stable deposition. Dense composite electrolyte membranes are obtained after sintering, and the influence of sintering additives on the electrical properties of the films are studied.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Artem P. Tarutin, Nikolai A. Danilov, Andrey A. Kalinin, Anna A. Murashkina, Dmitry A. Medvedev
Summary: The thermomechanical and chemical properties of Pr2NiO4+a-based electrode materials were optimized via Ba-doping, reducing their chemical interaction with Ba(Ce,Zr)O3-based electrolytes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yuanyan Luo, Wenhua Lou, Huiyan Feng, Zhihang Liu, Qiuyan Chen, Guizhen Liao, Xiaoting Huang, Panagiotis Tsiakaras, Peikang Shen
Summary: Ultra-small Pt-based catalysts were synthesized by a Pd seed-inducing-growth route, showing specific effects for enhancing the oxygen reduction reaction (ORR) and improving Pt utilization.
Review
Biochemistry & Molecular Biology
Syed Shoaib Ahmad Shah, Naseem Ahmad Khan, Muhammad Imran, Muhammad Rashid, Muhammad Khurram Tufail, Aziz ur Rehman, Georgia Balkourani, Manzar Sohail, Tayyaba Najam, Panagiotis Tsiakaras
Summary: The hydrogen evolution reaction (HER) is a promising technology for delivering clean energy using renewable sources. The use of transition metal tellurides (TMTs) and transition metal phosphides (TMPs) as electrocatalysts has emerged as a highly efficient, low-cost, and stable alternative to platinum-based catalysts. This review focuses on the progress made in the past decade, providing a detailed summary of their development and offering guidelines for the design of new electrocatalysts for energy conversion and storage technologies.
Article
Chemistry, Physical
Inna A. Zvonareva, George N. Starostin, Mariam T. Akopian, Gennady K. Vdovin, Xian-Zhu Fu, Dmitry A. Medvedev
Summary: The search for new oxide materials with pronounced proton transport is important for efficient energy conversion processes. Y-doped barium stannates exhibit varying transport properties depending on the doping degree, with weakly doped stannates being electron conductors and heavily doped stannates showing higher ionic conductivity and wider electrolytic domain boundary, making them potential electrolytes for protonic ceramic fuel and electrolysis cells.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Elena Kalinina, Larisa Ermakova, Elena Pikalova
Summary: In this study, thin-film barrier coatings based on Bi1.60Er0.4O3 solid electrolyte were formed on Ce0.8Sm0.2O1.9 electrolyte substrates using electrophoretic deposition (EPD) for the first time. The electrokinetic properties of EDB-based suspensions in different dispersion media were studied, and the effects of voltage and deposition time on coating thickness were investigated. A conductive polymer film was synthesized to enhance the conductivity of non-conductive substrates. The study demonstrated the feasibility of using EPD to create continuous EDB coatings for potential applications in cathode barrier layers in SOFC technology.
Article
Biochemistry & Molecular Biology
Elena Pikalova, Elena Kalinina
Summary: This study introduces a thin anode barrier layer of BaCe0.8Sm0.2O3 + 1 wt% CuO (BCS-CuO) electrolyte and a modifying layer of Ce0.8Sm0.1Pr0.1O1.9 (PSDC) electrolyte to increase the performance of a single solid oxide fuel cell (SOFC) with a supporting membrane of Ce0.8Sm0.2O1.9 (SDC) electrolyte. The electrophoretic deposition (EPD) method is used to form thin electrolyte layers on a dense supporting membrane. The power output of the SOFC cell is increased by reducing the ohmic and polarization resistances of the cell with the BCS-CuO/SDC/PSDC electrolyte membrane.
Article
Chemistry, Inorganic & Nuclear
Ksenia Belova, Anastasia Egorova, Svetlana Pachina, Irina Animitsa, Dmitry Medvedev
Summary: Oxygen-ionic and proton-conducting oxides, including La2ZnNdO5.5 and its Ca-doped derivatives, were synthesized. These materials were characterized for their phase composition, lattice parameters, and hydration capability. The conductivities of the samples were measured in dry and wet air, showing a significant increase in conductivity due to oxygen vacancies during acceptor doping. The Ca-doped phases also exhibited proton-conducting properties.
Article
Materials Science, Ceramics
Inna A. Zvonareva, George N. Starostin, Mariam T. Akopian, Anna A. Murashkina, Xian-Zhu Fu, Dmitry A. Medvedev
Summary: BaSnO3 is a new family of proton-conducting materials with potential high-temperature applications. The synthesis and characterization of BaSn1-xYxO3-δ (0 < x < 0.4) phases were conducted to understand the variations of chemical and thermal strains depending on composition. The results show that the importance of chemical expansion/contraction effects increases with increasing Y-content. These findings provide valuable data for the application of these materials in protonic ceramic devices.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Elena G. Kalinina, Elena Yu. Pikalova
Summary: This work aims to form dense anode coatings of yttria-stabilized zirconia (YSZ) and samarium-doped barium cerate (BCS) on the Ce0.8Sm0.2O2- electrolyte to improve the performance of a single fuel cell. Various methods, such as precipitation, laser vaporization condensation, and citrate-nitrate method, were used to obtain YSZ and BCS materials. The study reveals the challenges in forming dense YSZ layers on SDC substrates due to delamination during high-temperature sintering, which can be alleviated by the use of a Pt buffer sublayer. The compatibility of BCS barrier layers with SDC was also demonstrated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Physical
Nikolai A. Danilov, Inna A. Starostina, George N. Starostin, Anna V. Kasyanova, Dmitry A. Medvedev, Zongping Shao
Summary: Proton-conducting oxide materials have protonic defects in their crystal structure due to their interaction with hydrogen-containing atmospheres, resulting in superior ionic conductivity. Barium cerate, barium zirconate, and barium cerate-zirconate are widely studied as proton-conducting electrolyte materials. Y and Yb co-doped Ba(Ce,Zr)O-3 is considered one of the most promising systems.
ADVANCED ENERGY MATERIALS
(2023)
Correction
Chemistry, Physical
Elena Filonova, Elena Pikalova
Review
Chemistry, Physical
Elena Filonova, Elena Pikalova
Summary: The development of low-cost, commercially competitive solid oxide fuel cells with reduced operating temperatures is closely related to the search for new functional materials and technologies to improve the properties of established materials. Efforts are being made to improve air electrodes, which contribute to the degradation of cell performance at reduced temperatures. This review summarizes methods to improve the electrochemical performance of conventional air electrodes and provides background information for further development of electrode modification technologies.
Review
Biochemistry & Molecular Biology
Vladislav Sadykov, Elena Pikalova, Ekaterina Sadovskaya, Anna Shlyakhtina, Elena Filonova, Nikita Eremeev
Summary: Oxygen and hydrogen mobility are important characteristics for the operation of electrochemical devices, and this work focuses on studying the diffusion of mixed ionic-electronic conducting materials and its role in device performance. The main laws of bulk diffusion and surface exchange are highlighted, and isotope exchange techniques are used to study these processes in detail. Ionic transport properties of various conventional and state-of-the-art materials are reviewed.
