A Single-Ion Conducting UiO-66 Metal–Organic Framework Electrolyte for All-Solid-State Lithium Batteries,ACS Applied Energy Materials

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A Single-Ion Conducting UiO-66 Metal–Organic Framework Electrolyte for All-Solid-State Lithium Batteries
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-03-26 00:00:00 , DOI: 10.1021/acsaem.0c00410
Hui Yang ₁ , Botong Liu ₁ , Joeseph Bright ₂ , Sujan Kasani ₂ , Jianhui Yang ₂ , Xiangwu Zhang ₃ , Nianqiang Wu _{1,

2}

Affiliation

A metal–organic framework (MOF) single lithium-ion conductor has been synthesized by covalently immobilizing anions to the skeleton of MOF structures. The functionalized UiO-66 MOF exhibits an electrochemical stability window of 5.2 V versus Li|Li⁺ and ionic conductivity of 6.0 × 10^–5, 7.9 × 10^–5, and 1.1 × 10^–4 S/cm at 25, 60, and 90 °C, respectively. It displays single-ion conducting behavior with a high Li-ion transference number of 0.90 at 25 °C in the absence of any plasticizer. After ethylene carbonate and propylene carbonate are incorporated into the MOF structure, its ionic conductivity reaches 7.8 × 10^–4 S/cm at room temperature. The MOF electrolyte has been evaluated with all-solid-state Li|MOF|LiFePO₄ batteries at room temperature, showing excellent rate capacity and cycling stability.

中文翻译：

用于全固态锂电池的单离子导电UiO-66金属有机框架电解质

通过将阴离子共价固定在MOF结构的骨架上，可以合成金属-有机骨架（MOF）单个锂离子导体。功能化的UiO-66 MOF在25、60和60 ^℃时，相对于Li | Li ⁺的电化学稳定性窗口为5.2 V ，离子电导率为6.0×10 –5，7.9×10 ^–5和1.1×10 ^-4 S / cm。分别为90°C。在没有任何增塑剂的情况下，它在25°C时具有0.90的高锂离子迁移率，显示出单离子导电行为。将碳酸亚乙酯和碳酸亚丙酯掺入MOF结构后，其离子电导率达到7.8×10 ^–4室温下为S / cm。用全固态Li | MOF | LiFePO ₄电池在室温下对MOF电解质进行了评估，显示出优异的倍率容量和循环稳定性。

更新日期：2020-03-26

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