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Controllable and Reversible Soft Shorts within Solid-State Lithium-Ion Conductors for Potential Memristor Applications
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    Controllable and Reversible Soft Shorts within Solid-State Lithium-Ion Conductors for Potential Memristor Applications
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    • Qianyi Zhang
      Qianyi Zhang
      State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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    • Dongshi Zhang*
      Dongshi Zhang
      Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
      *E-mail: [email protected]
    • Qiwen Chen
      Qiwen Chen
      State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
      More by Qiwen Chen
    • Ruijie Liu
      Ruijie Liu
      Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
      More by Ruijie Liu
    • Hezhou Liu
      Hezhou Liu
      State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
      More by Hezhou Liu
    • Zhuguo Li
      Zhuguo Li
      Shanghai Key Laboratory of Materials Laser Processing and Modification, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
      More by Zhuguo Li
    • Huanan Duan*
      Huanan Duan
      State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
      *E-mail: [email protected]
      More by Huanan Duan
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    ACS Materials Letters

    Cite this: ACS Materials Lett. 2025, 7, XXX, 2437–2444
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    https://doi.org/10.1021/acsmaterialslett.5c00762
    Published May 29, 2025
    © 2025 American Chemical Society

    Abstract

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    Soft shorts are normally considered as the “invisible killers” of lithium-ion batteries because they are unpredictable, uncontrollable, and irreversible. In this work, a flexible and effective strategy based on femtosecond laser etching is proposed to construct usable soft shorts within solid-state lithium-ion conductors via microstructure design and electric field modulation. In the Li6.5La3Zr1.5Ta0.5O12 model system, the composition of the ionic and electronic transport can be effectively modulated by the assembly pressure. The underlying mechanism governing the microstructure-induced soft shorts involves pressure-driven microcracks propagating along grain boundaries, enabling lithium metal to creep and form conductive filaments. Inspired by biological synapses, a model memristor is designed based on the microstructure-induced soft shorts and demonstrated with excellent controllability and stability. These findings open potential opportunities for the development of next-generation neuromorphic devices.

    © 2025 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsmaterialslett.5c00762.

    • Detailed experimental details and additional data on sample synthesis, laser etching system, physicochemical characterizations, cell assembly, electrochemical testing and numerical simulation (PDF)

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    ACS Materials Letters

    Cite this: ACS Materials Lett. 2025, 7, XXX, 2437–2444
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acsmaterialslett.5c00762
    Published May 29, 2025
    © 2025 American Chemical Society

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