Large Energy Capacitive High-Entropy Lead-Free Ferroelectrics,Nano-Micro Letters

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Large Energy Capacitive High-Entropy Lead-Free Ferroelectrics
Nano-Micro Letters ( IF 31.6 ) Pub Date : 2023-03-10 , DOI: 10.1007/s40820-023-01036-2
Liang Chen ₁ , Huifen Yu _{1,

2} , Jie Wu _{1,

2} , Shiqing Deng _{1,

2} , Hui Liu _{1,

2} , Lifeng Zhu ₃ , He Qi ₁ , Jun Chen ₁

Affiliation

Highlights

Ultrahigh energy storage density of ~ 13.8 J cm⁻³ and large efficiency of ~ 82.4% are achieved in high-entropy lead-free relaxor ferroelectrics via high-entropy strategy, realizing nearly ten times growth.
Outstanding energy storage properties are attributed to the enhanced random field and breakdown field, decreased nanodomain sizes, strong multiple local distortions coexisting in-phase and anti-phase oxygen octahedron tilts.
Evolution of energy storage performance and domain structure with the increase in configuration entropy is systematically revealed for the first time.

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