Multi‐Polar Order Engineering Enables Near‐Ideal Efficiency in Lead‐Free Energy Storage Perovskite

Toxic lead-based dielectrics dominate high-performance capacitors, creating urgent environmental and supply-chain challenges. Multi-polar order engineering is deployed to create an industrially scalable lead-free perovskite achieving simultaneous record efficiency (η ≈ 95%) and energy density (12 J cm<sup>-3</sup>). Phase-field simulations are also used to guide micro-to-nano domain design to construct switchable polar nano region that delay polarization saturation. Crucially, sub-angstrom electronic state optimization - previously unexplored in energy storage dielectrics - is revealed as pivotal: synchrotron XAS quantifies Nb-O dipole ionicity enhancement via electronic polarization, while atomic-resolution electron microscopy statistically confirms bond-length homogenization and distortion reduction that structurally anchor this effect. This hierarchical atomic-to-electronic control reshapes the electrical microstructure, enabling unified charge dynamics (validated by DRT analysis) that deliver ultrafast field response (<32 ns discharge) and exceptional thermal resilience (< ±4% current fluctuation, 25-150 °C). Fabricated from commodity precursors, the material eliminates the reliance on rare-earth precursors that are common in PLZT production, significantly lowering costs while mitigating environmental impacts. Overall, this work establishes a sustainable pathway for grid-scale power electronics.

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Publication Details

Journal
Advanced Materials
Published
2025-12-14
DOI
https://doi.org/10.1002/adma.202518270
Primary Topic
Ferroelectric and Piezoelectric Materials
Type
article
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article

Multi‐Polar Order Engineering Enables Near‐Ideal Efficiency in Lead‐Free Energy Storage Perovskite

Saiwei Luan, Yao Su, Molly Meng‐Jung Li, Houbing Huang et al.
Advanced Materials
Ferroelectric and Piezoelectric Materials
article

Multi‐Polar Order Engineering Enables Near‐Ideal Efficiency in Lead‐Free Energy Storage Perovskite

Saiwei Luan, Yao Su, Molly Meng‐Jung Li, Houbing Huang, Shuhui Yu, Jiyan Dai, Haitao Huang, Yongbo Fan, Shuwen Zhu, Haijun Wu, Wanbo Qu, Lei Zhang, Yang Zhang, Weijia Wang, Xiyang Wang, Yuxuan Yang, Yuxin Jia, Ke Xu, Huiqing Fan, Luwei Peng, Lin Lei
article en

Abstract

Toxic lead-based dielectrics dominate high-performance capacitors, creating urgent environmental and supply-chain challenges. Multi-polar order engineering is deployed to create an industrially scalable lead-free perovskite achieving simultaneous record efficiency (η ≈ 95%) and energy density (12 J cm<sup>-3</sup>). Phase-field simulations are also used to guide micro-to-nano domain design to construct switchable polar nano region that delay polarization saturation. Crucially, sub-angstrom electronic state optimization - previously unexplored in energy storage dielectrics - is revealed as pivotal: synchrotron XAS quantifies Nb-O dipole ionicity enhancement via electronic polarization, while atomic-resolution electron microscopy statistically confirms bond-length homogenization and distortion reduction that structurally anchor this effect. This hierarchical atomic-to-electronic control reshapes the electrical microstructure, enabling unified charge dynamics (validated by DRT analysis) that deliver ultrafast field response (<32 ns discharge) and exceptional thermal resilience (< ±4% current fluctuation, 25-150 °C). Fabricated from commodity precursors, the material eliminates the reliance on rare-earth precursors that are common in PLZT production, significantly lowering costs while mitigating environmental impacts. Overall, this work establishes a sustainable pathway for grid-scale power electronics.

Advanced MaterialsVol. 38(9)
Beijing Institute of Technology (CN), Hong Kong Polytechnic University (HK), Northwestern Polytechnical University (CN), Shenzhen Polytechnic University (CN), Chinese Academy of Sciences (CN), Beijing Research Institute of Mechanical and Electrical Technology (CN), Shenzhen Institutes of Advanced Technology (CN), University of Chinese Academy of Sciences (CN), Zhuhai Institute of Advanced Technology (CN), Xi'an Jiaotong University (CN)
Openalex Percentile: Top 67%
Ferroelectric and Piezoelectric Materials
DOISourceOpenAlex
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