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One-Pot Synthesis of Quaternary Pyridinium-Type Cationic-Based Porous Organic Frameworks: Enhanced Poly(ethylene oxide) Composite Polymer Electrolytes for All-Solid-State Li–S Batteries
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2023-11-30 , DOI: 10.1021/acsaem.3c02630 Ziming Qiao 1 , Zhipeng Yang 1 , Mengke Li 1 , Yi Feng 1 , Xiongwei Qu 1 , Hemi Qu 2 , Xiaojie Zhang 1
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2023-11-30 , DOI: 10.1021/acsaem.3c02630 Ziming Qiao 1 , Zhipeng Yang 1 , Mengke Li 1 , Yi Feng 1 , Xiongwei Qu 1 , Hemi Qu 2 , Xiaojie Zhang 1
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Two quaternary pyridinium-type cationic-based porous organic frameworks (DB-POF and LB-POF) were first synthesized via “one-pot” polymerization and were incorporated into a PEO/LiTFSI matrix as fillers to prepare a series of solid polymer electrolytes (SPEs) . The obtained quaternary pyridine-type cationic-based POFs not only have higher polarizability through the characteristic of skeleton charge but also have a stable structure and simple preparation, making them a good candidate material for achieving rapid Li+ conductivity in SPEs. Therefore, POFs could be incorporated into PEO-based SPEs that will have a positive impact on the ion transport capacity and the mechanical properties of SPEs and also increase the stability of the lithium metal anode. Among the obtained membranes, the PEO-LB-10% electrolyte exhibits the best ion conductivity, up to 5.8 × 10–4 S cm–1 at 90 °C, and has outstanding mechanical properties, and the tensile strength can reach 8.61 MPa. Significantly, the Li–S battery containing the PEO-LB-10% electrolyte indicates superior electrochemical performance, with an excellent initial discharge specific capacity of 906 mAh g–1 at 0.2 C. After 500 cycles at 1 C, its capacity remained at 472 mAh g–1, with an attenuation rate of 0.037% per cycle.
中文翻译：
一锅法合成季吡啶类阳离子多孔有机骨架：全固态锂硫电池用增强聚环氧乙烷复合聚合物电解质
首先通过“一锅法”聚合合成了两种季吡啶型阳离子基多孔有机骨架（DB-POF和LB-POF），并将其作为填料掺入PEO/LiTFSI基质中，制备了一系列固体聚合物电解质（ SPE）。所获得的季吡啶型阳离子基POF不仅通过骨架电荷的特性具有较高的极化率，而且结构稳定且制备简单，使其成为SPE中实现快速Li +电导的良好候选材料。因此，POF可以合并到基于PEO的SPE中，这将对SPE的离子传输能力和机械性能产生积极影响，并提高锂金属阳极的稳定性。在所得膜中，PEO-LB-10%电解质表现出最好的离子电导率，在90℃时高达5.8×10 –4 S cm –1，并且具有优异的机械性能，拉伸强度可达8.61 MPa。值得注意的是，含有 PEO-LB-10% 电解质的锂硫电池表现出优异的电化学性能，在 0.2 C 下具有 906 mAh g –1的优异首次放电比容量。在 1 C 下循环 500 次后，其容量仍保持在 472 mAh g –1，每周期衰减率为 0.037%。
更新日期：2023-11-30
中文翻译：
一锅法合成季吡啶类阳离子多孔有机骨架：全固态锂硫电池用增强聚环氧乙烷复合聚合物电解质
首先通过“一锅法”聚合合成了两种季吡啶型阳离子基多孔有机骨架（DB-POF和LB-POF），并将其作为填料掺入PEO/LiTFSI基质中，制备了一系列固体聚合物电解质（ SPE）。所获得的季吡啶型阳离子基POF不仅通过骨架电荷的特性具有较高的极化率，而且结构稳定且制备简单，使其成为SPE中实现快速Li +电导的良好候选材料。因此，POF可以合并到基于PEO的SPE中，这将对SPE的离子传输能力和机械性能产生积极影响，并提高锂金属阳极的稳定性。在所得膜中，PEO-LB-10%电解质表现出最好的离子电导率，在90℃时高达5.8×10 –4 S cm –1，并且具有优异的机械性能，拉伸强度可达8.61 MPa。值得注意的是，含有 PEO-LB-10% 电解质的锂硫电池表现出优异的电化学性能，在 0.2 C 下具有 906 mAh g –1的优异首次放电比容量。在 1 C 下循环 500 次后，其容量仍保持在 472 mAh g –1，每周期衰减率为 0.037%。
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