High entropy engineering ceramics: a critical review of mechanical, structural, thermal and electrical properties

Gemeda Jemal Usa; Temesgen D. Desissa; Gebisa B. Feyisa; Fekadu  Gochole; Bonso Leliso; Robson Balcha Wakeyo

doi:10.18203/issn.2454-2156.IntJSciRep20263968

Authors

Gemeda Jemal Usa Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia
Temesgen D. Desissa Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia
Gebisa B. Feyisa Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia
Fekadu Gochole Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia
Bonso Leliso Department of Mechanical Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia
Robson Balcha Wakeyo Department of Mechanical Engineering, Faculty of Manufacturing, Institute of Technology, Hawassa University, Hawassa, Ethiopia

DOI:

https://doi.org/10.18203/issn.2454-2156.IntJSciRep20263968

Keywords:

High‑entropy oxides, Multifunctional properties, Research gaps, Future directions, Sustainable materials

Abstract

High entropy oxides (HEOs) have emerged as a transformative class of materials, stabilized by configurational entropy and lattice distortion, offering multifunctional properties across mechanical, structural, thermal, electrical, and catalytic domains. This review provides a comprehensive synthesis of current knowledge, critically evaluating processing pathways, property correlations, and application areas ranging from energy storage and catalysis to thermoelectrics and environmental technologies. The novelty of this review lies in its integrative framework: mapping research gaps across temporal, methodological, application, materials, and conceptual dimensions; introducing comparative tables and schematic visualizations that unify diverse findings into defense ready, presentation friendly formats; highlighting entropy driven multifunctionality as the central paradigm linking synthesis, properties, and applications into a coherent roadmap; and proposing future directions that combine computational design, scalable green synthesis, defect engineering, and sustainability to accelerate translation into real world devices. By bridging fundamental insights with practical applications and embedding novelty through structured gap analysis, visual synthesis, and entropy centered roadmaps, this review positions HEOs as cornerstone materials in the pursuit of resilient energy, electronic, and environmental systems.

Author Biographies

Gemeda Jemal Usa, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

MSc

Temesgen D. Desissa, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Dr.

Gebisa B. Feyisa, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Dr

Fekadu Gochole, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Dr.

Bonso Leliso, Department of Mechanical Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

MSc

Robson Balcha Wakeyo, Department of Mechanical Engineering, Faculty of Manufacturing, Institute of Technology, Hawassa University, Hawassa, Ethiopia

MSc

References

Kotsonis GN, Almishal SSI, dos Santos Vieira FM, Crespi VH, Dabo I, Rost CM, et al. High-entropy oxides: Harnessing crystalline disorder for emergent functionality. J Am Ceramic Soc. 2023;106(10):5587-611.

Tomboc GM, Zhang X, Choi S, Kim D, Lee LYS, Lee K. Stabilization, characterization, and electrochemical applications of high-entropy oxides: Critical assessment of crystal phase–properties relationship. Adv Func Mat. 2022;32(43):2205142.

Rost CM, Sachet E, Borman T, Moballegh A, Dickey EC, Hou D, et al. Entropy-stabilized oxides. Nat Communic. 2015;6:8485.

Meng XH, Zhang XD, Sheng H, Fan M, Lin T, Xiao D, et al. Chemical-Mechanical Robustness of Single-Crystalline Ni-Rich Cathode Enabled by Surface Atomic Arrangement Control. Angew Chem Int Ed Engl. 2023;62(22):e202302170.

Li K, Chen W. Recent progress in high-entropy alloys for catalysts: Synthesis, applications, and prospects. Mat Today Energy. 2021;20:100638.

Zhang G, Wan G. University of Science and Technology of China. Chinese patent CN114927663A. 2022.

Gao X, Zhang X, Liu X, Tian Y, Cai Q, Jia M, et al. Recent Advances for High-Entropy based Layered Cathodes for Sodium Ion Batteries. Small Methods. 2023;7(9):e2300152.

Sheng H, Meng XH, Xiao DD, Fan M, Chen WP, Wan J, et al. An Air-Stable High-Nickel Cathode with Reinforced Electrochemical Performance Enabled by Convertible Amorphous Li2 CO3 Modification. Adv Mater. 2022;34(12):e2108947.

McCormack SJ, Navrotsky A. Thermodynamics of high entropy oxides. Acta Materialia. 2021;202:1-21.

Sarkar A, Breitung B, Hahn H. High entropy oxides: The role of entropy, enthalpy and synergy. Scripta Materialia. 2020;187:43-8.

Murty BS, Yeh JW, Ranganathan S. High Entropy Alloys. Butterworth-Heinemann. Elsevier; 2014.

Li H, Zhou Y, Liang Z, Ning H, Fu X, Xu Z, et al. High-Entropy Oxides: Advanced Research on Electrical Properties. Coatings. 2021;11(6):628.

Sun Z, Zhao Y, Sun C, Ni Q, Wang C, Jin H. High entropy spinel-structure oxide for electrochemical application. Chem Engineer J. 2022;431:133448.

Fracchia M, Coduri M, Ghigna P, Anselmi-Tamburini U. Phase stability of high entropy oxides: A critical review. J Eur Ceramic Soc. 2023;44(2):585-94.

Sahlberg M, Karlsson D, Zlotea C, Jansson U. Superior hydrogen storage in high entropy alloys. Sci Rep. 2016;6:36770.

Marques F, Balcerzak M, Winkelmann F, Zepon G, Felderhoff M. Review and outlook on high-entropy alloys for hydrogen storage. Energ Environ Sci. 2021;14(10):5191-227.

Pedersen JK, Batchelor TAA, Bagger A, Rossmeisl J. High-entropy alloys as catalysts for the CO₂ and CO reduction reactions. ACS Catalysis. 2020;10(3):2169-76.

Yang JX, Dai BH, Chiang CY, Chiu IC, Pao CW, Lu SY, et al. Rapid fabrication of high-entropy ceramic nanomaterials for catalytic reactions. ACS Nano. 2021;15(7):12324-33.

Feng G, Ning F, Song J, Shang H, Zhang K, Ding Z, et al. Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution. J Am Chem Soc. 2021;143(41):17117-27.

Jiang B, Yu Y, Chen H, Cui J, Liu X, Xie L, et al. Entropy engineering promotes thermoelectric performance in p-type chalcogenides. Nat Communic. 2021;12(1):3234.

Wang X, Yao H, Zhang Z, Li X, Chen C, Yin L, et al. Enhanced Thermoelectric Performance in High Entropy Alloys Sn0.25Pb0.25Mn0.25Ge0.25Te. ACS Appl Mater Interfaces. 2021;13(16):18638-47.

Wei S, Kim SJ, Kang J, Zhang Y, Zhang Y, Furuhara T, et al. Natural-mixing guided design of refractory high-entropy alloys with as-cast tensile ductility. Nat Mater. 2020;19(11):1175-81.

Park NY, Ryu HH, Kuo LY, Kaghazchi P, Yoon CS, Sun YK. High-energy cathodes via precision microstructure tailoring for next-generation electric vehicles. ACS Energy Letters. 2021;6(12):4195-202.

Bérardan D, Franger S, Meena AK, Dragoe N. Room temperature lithium superionic conductivity in high entropy oxides. J Mat Chem A. 2016;4(24):9536-41.

Gild J, Samiee M, Braun JL, Harrington T, Vega H, Hopkins PE, et al. High-entropy fluorite oxides. J Eur Ceramic Soc. 2018;38(10):3578-84.

Qin M, Gild J, Wang H, Harrington T, Vecchio KS, Luo J. Dissolving and stabilizing soft WB2 and MoB2 phases into high-entropy borides via boron-metals reactive sintering to attain higher hardness. J Eur Ceramic Soc. 2020;40(12):4348-53.

Gild J, Wright A, Quiambao-Tomko K, Qin M, Tomko JA, bin Hoque MS, et al. Thermal conductivity and hardness of three single-phase high-entropy metal diborides fabricated by borocarbothermal reduction and spark plasma sintering. Ceramics Int. 2020;46(5):6906-13.

Edalati K, Li HW, Kilmametov A, Floriano R, Borchers C. High-pressure torsion for synthesis of high-entropy alloys. Metals. 2021;11(8):1263.

Yang Y, Chen B, Chen J, Hu L, Hu M. Preparation of (VNbTaZrHf) C high-entropy carbide nanoparticles via electro-deoxidation in molten salt and their supercapacitive behaviour. Canadian Metallurgical Quarterly. 2022;61(4):389-97.

Gild J, Braun J, Kaufmann K, Marin E, Harrington T, Hopkinset P, et al. A high-entropy silicide: (Mo₀.₂Nb₀.₂Ta₀.₂Ti₀.₂W₀.₂)Si₂. J Mat. 2019;5(3):337-43.

Liu J, Ma C, Wang L, Ren K, Ran H, Feng D, et al. Single-phase formation mechanism and dielectric properties of sol-gel-derived Ba(Ti₀.₂Zr₀.₂Sn₀.₂Hf₀.₂Ce₀.₂)O₃ high-entropy ceramics. J Mat Sci Technol. 2022;130:103-11.

Li J, Chen Y, Zhao Y, Shi X, Zhang S. Super-hard (MoSiTiVZr) Nx high-entropy nitride coatings. J Alloys Comp. 2022;926:166807.

Meisenheimer PB, Kratofil TJ, Heron JT. Giant enhancement of exchange coupling in entropy-stabilized oxide heterostructures. Sci Rep. 2017;7:13344.

Lökçü E, Anik M. Investigating the structural and lithium storage properties of high-entropy oxides in the Mg-Co-Ni-Cu-Zn-O system. Scripta Materialia. 2024;240:115840.

Xiang H, Xing Y, Dai FZ, Wang H, Su L, Miao L, et al. High-entropy ceramics: Present status, challenges, and a look forward. J Adv Ceramics. 2021;10(3):385-441.

Albedwawi SH, AlJaberi A, Haidemenopoulos GN, Polychronopoulou K. High entropy oxides-exploring a paradigm of promising catalysts: A review. Mat Design. 2021;202:109534.

Lai D, Ling L, Su M, Kang Q, Gao F, Lu Q. From amorphous to crystalline: a universal strategy for structure regulation of high-entropy transition metal oxides. Chem Sci. 2023;14(7):1787-96.

Webb M, Gerhart M, Baksa S, Gelin S, Ansbro AR, Meisenheimer PB, et al. High temperature stability of entropy-stabilized oxide (MgCoNiCuZn) 0.2 O in air. Appl Physics Letters. 2024;124(15).

Hong W, Chen F, Shen Q, Han YH, Fahrenholtz WG, Zhang L. Microstructural evolution and mechanical properties of (Mg, Co, Ni, Cu, Zn) O high‐entropy ceramics. J Am Ceramic Soc. 2019;102(4):2228-37.

Grzesik Z, Smoła G, Stygar M, Dąbrowa J, Zajusz M, Mroczka K, et al. Defect structure and transport properties in (Co, Cu, Mg, Ni, Zn) O high entropy oxide. J Eur Ceramic Soc. 2019;39(14):4292-8.

Jimenez-Segura MP, Takayama T, Bérardan D, Hoser A, Reehuis M, Takagi H, Dragoe N. Long-range magnetic ordering in rocksalt-type high-entropy oxides. Appl Physics Letters. 2019;114(12).

Wang Q, Sarkar A, Wang D, Velasco L, Azmi R, Bhattacharya SS, et al. Multi-anionic and-cationic compounds: new high entropy materials for advanced Li-ion batteries. Energy Environ Sci. 2019;12(8):2433-42.

Balcerzak M, Kawamura K, Bobrowski R, Rutkowski P, Brylewski T. Mechanochemical Synthesis of (Co, Cu, Mg, Ni, Zn) O High-Entropy Oxide and Its Physicochemical Properties: Balcerzak, Kawamura, Bobrowski, Rutkowski, and Brylewski. J Electronic Mat. 2019;48(11):7105-13.

Mao A, Xiang HZ, Zhang ZG, Kuramoto K, Yu H, Ran S. Solution combustion synthesis and magnetic property of rock-salt (Co₀.₂Cu₀.₂Mg₀.₂Ni₀.₂Zn₀.₂)O high-entropy oxide nanocrystalline powder. J Magnetism Magnetic Mat. 2019;484:245-52.

Xiang HZ, Xie HX, Mao A, Jia YG, Si TZ. Facile preparation of single phase high-entropy oxide nanocrystalline powders by solution combustion synthesis. Int J Mat Res. 2020;111(3):246-9.

Chellali MR, Sarkar A, Nandam SH, Bhattacharya SS, Breitung B, Hahn H, et al. On the homogeneity of high entropy oxides: An investigation at the atomic scale. Scripta Materialia. 2019;166:58-63.

Wang Q, Sarkar A, Li Z, Lu Y, Velasco L, Bhattacharya SS, et al. High entropy oxides as anode material for Li-ion battery applications: A practical approach. Electrochem Communic. 2019;100:121-5.

Usharani NJ, Bhandarkar A, Subramanian S, Bhattacharya SS. Antiferromagnetism in a nanocrystalline high entropy oxide (Co, Cu, Mg, Ni, Zn) O: Magnetic constituents and surface anisotropy leading to lattice distortion. Acta Materialia. 2020;200:526-36.

Kumar A, Sharma G, Aftab A, Ahmad MI. Flash assisted synthesis and densification of five component high entropy oxide (Mg, Co, Cu, Ni, Zn) O at 350° C in 3 min. J Eur Ceramic Soc. 2020;40(8):3358-62.

Biesuz M, Spiridigliozzi L, Dell’Agli G, Bortolotti M, Sglavo VM. Synthesis and sintering of (Mg, Co, Ni, Cu, Zn) O entropy-stabilized oxides obtained by wet chemical methods. J Mat Sci. 2018;53(11):8074-85.

Shi C, Wang J, Liu Y, Huo P, Yan Y, Liu Z, et al. Sintering and electrical properties of Mn–Co–Fe–Zn–Ni–O high-entropy ceramics for NTC thermistors. Ceramics Int. 2024;50(4):7183-92.

Filho MOR, Alves RF, Raimundo RA, Hortêncio JS, Lopes CMS, Nascimento EP, et al. Structural, magnetic and electrocatalytic properties of rock salt oxide nanofibers (Ni₀.₂Mg₀.₂Zn₀.₂Cu₀.₂₋ₓCo₀.₂₊ₓ)O produced by air-heated solution blow spinning for oxygen evolution reaction. Appl Surface Sci. 2025;682:161593.

Brune PM, Hilmas GE, Fahrenholtz WG, Watts JL, Curtarolo S. Thermal and electrical properties of single‐phase high entropy carbide ceramics. J Am Ceramic Soc. 2024;107(9):5893-902.

Sarker P, Harrington T, Toher C, Oses C, Samiee M, Maria JP, et al. High-entropy high-hardness metal carbides discovered by entropy descriptors. Nat Commun. 2018;9(1):4980.

Chen S, Bao M, Jia Y, Shao X, Guo Y, Li S, et al. Lattice distortion induced rock salt high-entropy oxide for high-rate lithium-ion storage. J Alloys Comp. 2024;990:174480.

Biesuz M, Chen J, Bortolotti M, Speranza G, Esposito V, Sglavo VM. Ni-free high-entropy rock salt oxides with Li superionic conductivity. J Mat Chem A. 2022;10(44):23603-16.

Zhang J, Yan J, Calder S, Zheng Q, McGuire MA, Abernathy DL, et al. Long-range antiferromagnetic order in a rocksalt high entropy oxide. Chem Mat. 2019;31(10):3705-11.

Rost CM, Rak Z, Brenner DW, Maria JP. Local structure of the MgxNixCoxCuxZnxO (x= 0.2) entropy‐stabilized oxide: an EXAFS study. J Am Ceramic Soc. 2017;100(6):2732-8.

Pu Y, Moseley D, He Z, Pitike KC, Manley ME, Yan J, et al. (Mg, Mn, Fe, Co, Ni) O: A rocksalt high-entropy oxide containing divalent Mn and Fe. Sci Adv. 2023;9(38):eadi8809.

Manchón-Gordón AF, Lobo-Llamas C, Molina Molina S, Perejón A, Sánchez-Jiménez PE, Pérez-Maqueda LA. Influence of Atmosphere on the Formation of High-Entropy Oxides of the Co-Cu-Fe-Mg-Mn-Ni-O System by Reactive Flash Sintering. Ceramics Int. 2024;50(21):42276-85.

High entropy engineering ceramics: a critical review of mechanical, structural, thermal and electrical properties

Authors

DOI:

Keywords:

Abstract

Author Biographies

Gemeda Jemal Usa, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Temesgen D. Desissa, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Gebisa B. Feyisa, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Fekadu Gochole, Department of Materials Science and Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Bonso Leliso, Department of Mechanical Engineering, College of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama, Ethiopia

Robson Balcha Wakeyo, Department of Mechanical Engineering, Faculty of Manufacturing, Institute of Technology, Hawassa University, Hawassa, Ethiopia

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