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The Optimized Interfacial Compatibility of Metal–Organic Frameworks Enables a High-Performance Quasi-Solid Metal Battery
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-08-17 , DOI: 10.1021/acsenergylett.0c01517 Qi Zhang 1 , Baoming Liu 1 , Jia Wang 1 , Qifei Li 1 , Dixiong Li 1 , Sijia Guo 1 , Yingbo Xiao 1 , Qinghan Zeng 1 , Wenchao He 1 , Mingyi Zheng 1 , Yifei Ma 1 , Shaoming Huang 1
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-08-17 , DOI: 10.1021/acsenergylett.0c01517 Qi Zhang 1 , Baoming Liu 1 , Jia Wang 1 , Qifei Li 1 , Dixiong Li 1 , Sijia Guo 1 , Yingbo Xiao 1 , Qinghan Zeng 1 , Wenchao He 1 , Mingyi Zheng 1 , Yifei Ma 1 , Shaoming Huang 1
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Metal–organic frameworks (MOFs) have been attracting a great deal of attention as potential solid electrolytes (SEs). However, the interfacial compatibility of MOF-based SEs caused by the physical contact among MOF particles, the polymer binder, and electrodes is not yet fully determined. Herein, a bioinspired design strategy aiming to build ion transport pathways at interfaces was introduced. The MOF-to-MOF transport paths were built via in situ ring opening of epoxide, akin to the protein molecules that transport the ion across the cell walls. After optimization, the obtained SE is endowed with a high ion conductivity of 1.70 × 10–3 S cm–1 at 30 °C, a wide electrochemical window of 4.6 V, a high Li+ transference number of 0.8, and a decreased interface resistance. Consequently, the fabricated quasi-solid metal batteries exhibit higher and more stable cycling performance compared to the performance of those without interface optimization. This strategy for optimizing the interfacial compatibility of MOFs thus exploits a new avenue for developing high-performance SEs for various metal batteries.
中文翻译：
金属有机框架的最佳界面相容性可实现高性能的准固态金属电池
金属有机框架（MOF）作为潜在的固体电解质（SEs）引起了广泛的关注。但是，由MOF颗粒，聚合物粘合剂和电极之间的物理接触导致的基于MOF的SE的界面相容性尚未完全确定。本文介绍了一种旨在在界面处建立离子传输途径的生物启发设计策略。MOF到MOF的传输路径是通过环氧化物的原位开环建立的，类似于将离子跨细胞壁传输的蛋白质分子。经过优化后，所获得的SE在30°C时具有1.70×10 –3 S cm –1的高离子电导率，4.6 V的宽电化学窗口，高Li +迁移数为0.8，界面电阻降低。因此，与没有界面优化的电池相比，所制造的准固态金属电池表现出更高和更稳定的循环性能。因此，这种优化MOF界面兼容性的策略为开发用于各种金属电池的高性能SE开拓了一条新途径。
更新日期：2020-09-11
中文翻译：
金属有机框架的最佳界面相容性可实现高性能的准固态金属电池
金属有机框架（MOF）作为潜在的固体电解质（SEs）引起了广泛的关注。但是，由MOF颗粒，聚合物粘合剂和电极之间的物理接触导致的基于MOF的SE的界面相容性尚未完全确定。本文介绍了一种旨在在界面处建立离子传输途径的生物启发设计策略。MOF到MOF的传输路径是通过环氧化物的原位开环建立的，类似于将离子跨细胞壁传输的蛋白质分子。经过优化后，所获得的SE在30°C时具有1.70×10 –3 S cm –1的高离子电导率，4.6 V的宽电化学窗口，高Li +迁移数为0.8，界面电阻降低。因此，与没有界面优化的电池相比，所制造的准固态金属电池表现出更高和更稳定的循环性能。因此，这种优化MOF界面兼容性的策略为开发用于各种金属电池的高性能SE开拓了一条新途径。
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