Qianyi Zhang, Dongshi Zhang*, Qiwen Chen, Ruijie Liu, Hezhou Liu, Zhuguo Li and Huanan Duan*,
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Controllable and Reversible Soft Shorts within Solid-State Lithium-Ion Conductors for Potential Memristor Applications
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.
期刊介绍：
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.
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