Strategies and characterization methods for achieving high performance PEO-based solid-state lithium-ion batteries,Chemical Communications

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Strategies and characterization methods for achieving high performance PEO-based solid-state lithium-ion batteries
Chemical Communications ( IF 4.3 ) Pub Date : 2022-06-14 , DOI: 10.1039/d2cc02306g
Bin Guo ₁ , Yanda Fu ₂ , Jianan Wang ₃ , Yi Gong ₄ , Yunlong Zhao ₄ , Kai Yang ₄ , Sida Zhou ₁ , Lishuo Liu ₅ , Shichun Yang ₁ , Xinhua Liu ₁ , Feng Pan ₂

Affiliation

Polyethylene oxide (PEO) based polymer electrolytes have been widely used in solid-state lithium batteries (SSBs) owing to the high solubility of lithium salt, favourable ionic conductivity, flexibility for improved interfacial contact and scalable processing. In this work, we summarize the main limitations remaining to be solved before the large-scale commercialization of PEO-based SSBs, including (1) improving ionic conductivity toward high-rate performance and lower operating temperature, (2) enhancing mechanical strength for improved lithium dendrite resistance and large-scale processing, (3) strengthening electrochemical stability to match high energy density electrodes with high voltage, and (4) achieving high thermal stability toward safe operation. Meanwhile, the characterization methods to investigate the ion transportation mechanism, lithium dendrite growth and decomposition reaction are also discussed.

中文翻译：

实现高性能 PEO 基固态锂离子电池的策略和表征方法

基于聚环氧乙烷（PEO）的聚合物电解质由于锂盐的高溶解度、良好的离子电导率、改善界面接触的灵活性和可扩展的加工工艺，已广泛用于固态锂电池（SSB）。在这项工作中，我们总结了基于 PEO 的 SSB 大规模商业化之前仍有待解决的主要限制，包括（1）提高离子电导率以实现高倍率性能和更低的工作温度，（2）提高机械强度以改善锂枝晶电阻和大规模加工，（3）加强电化学稳定性以匹配高能量密度电极和高电压，以及（4）实现高热稳定性以实现安全操作。同时，研究离子传输机制的表征方法，

更新日期：2022-06-14

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