Doping effects on the structural and electrochemical properties of cathode materials for solid oxide fuel cells: a technical perspective
Omeiza L.A. Bekmyrza K. Kabyshev A. Mamudu U. Kuterbekov K.A. Baratova A. Bakalbayeva G.A. Azad A.K.
November 2025Elsevier B.V.
Chemical Engineering Journal Advances
2025#24
Solid oxide fuel cells (SOFCs) offer a promising option for efficient clean energy generation, with cathode materials playing a critical role in determining overall cell performance. Doping is an effective strategy employed by various studies to enhance the electrochemical performance of cathode materials in SOFCs. The specific choice of dopant is influenced by several factors, including cost, chemical properties, sustainability, and thermal stability at high temperatures. This review provides a technical analysis of doping effects on various series of cathode materials, including perovskite oxides such as (La,Sr)MnO3, (La,Sr)FeO3, and Ba(Zr,Ni)O3, among others. The present study also investigates how dopants modify lattice cell parameters, oxygen vacancy concentration, and linear thermal elongation behaviour to optimize cathode performance. Doping influence on oxygen reduction reaction (ORR) kinetics, electrical conductivity, and long-term stability is discussed. Special attention is given to cobalt-free cathode materials to meet sustainability goals. Several dopants employed in cathode materials were compared, and their effects on the electrochemical performance were highlighted. Key insights into the design of next-generation cathode materials with superior performance and durability for SOFC applications were revealed.
Cathode , Electrical properties , ORR , Perovskites , SOFC
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Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE1410, Brunei Darussalam
Institute of Physical and Technical Sciences, L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE1410, Brunei Darussalam
Faculty of Integrated Technologies
Institute of Physical and Technical Sciences
Centre for Advanced Material and Energy Sciences
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