A Naphthalene Diimide Covalent Organic Framework: Comparison of Cathode Performance in Lithium-Ion Batteries with Amorphous Cross-linked and Linear Analogues, and Its Use in Aqueous Lithium-Ion Batteries,ACS Applied Energy Materials

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A Naphthalene Diimide Covalent Organic Framework: Comparison of Cathode Performance in Lithium-Ion Batteries with Amorphous Cross-linked and Linear Analogues, and Its Use in Aqueous Lithium-Ion Batteries
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-12-31 , DOI: 10.1021/acsaem.0c02281
Samik Jhulki ₁ , Cameron H. Feriante ₁ , Roman Mysyk _{2,

3} , Austin M. Evans ₄ , Alexandre Magasinski ₂ , Ashwin Sankara Raman ₂ , Kostiantyn Turcheniuk ₂ , Stephen Barlow ₁ , William R. Dichtel ₄ , Gleb Yushin ₂ , Seth R. Marder ₁

Affiliation

We report a two-dimensional (2D) imine-linked covalent organic framework (COF) containing naphthalene diimide (NDI) redox groups, TAPB-NDI COF. Lithium-ion batteries (LIBs) with TAPB-NDI COF-based electrodes exhibited >95% of their theoretical capacity at a C/20 charge/discharge rate, among the highest faradaic efficiency of a NDI-COF electrode. The pores of TAPB-NDI COF are among the largest reported and presumably facilitate efficient Li⁺ ion transport. An amorphous cross-linked network (TAPB-NDI Amp) and a linear polymer (PD-NDI Lp) with similar chemical structures demonstrated lower capacities than the COF at C/20 current rate. However, PD-NDI Lp exhibited an overall higher gravimetric capacity and superior specific capacity retention at higher discharge rates compared to the TAPB-NDI COF. The COF is stable in neutral aqueous solutions, allowing its use as an electrode in neutral aqueous LIBs, which exhibited better rate performances than those in coin-cell set ups. Importantly, the cathodes did not suffer from a competitive hydrogen evolution reaction in aqueous LIBs. This opens up opportunities for using NDI moieties in neutral aqueous batteries and other energy-storage devices. Aqueous devices have been largely limited to “quinone–hydroquinone”-based redox couples, which are, however, operable only in acidic media.

中文翻译：

萘二酰亚胺共价有机框架：锂离子电池与非晶态交联和线性类似物的阴极性能比较，及其在水性锂离子电池中的应用

我们报告包含萘二酰亚胺（NDI）氧化还原基团TAPB-NDI COF的二维（2D）亚胺连接的共价有机框架（COF）。在NDI-COF电极的法拉第效率最高的情况下，具有TAPB-NDI COF基电极的锂离子电池（LIB）在C / 20充电/放电速率下显示出其理论容量的> 95％。TAPB-NDI COF的孔是已报道的最大孔，可能有助于有效的Li ⁺离子传输。具有相似化学结构的无定形交联网络（TAPB-NDI Amp）和线性聚合物（PD-NDI Lp）在C / 20电流速率下显示出比COF低的容量。但是，与TAPB-NDI COF相比，PD-NDI Lp在更高的放电速率下表现出总体更高的重量分析能力和优异的比容量保持率。COF在中性水溶液中稳定，因此可在中性水溶液LIB中用作电极，与纽扣电池相比，COB表现出更好的速率性能。重要的是，在水性LIB中，阴极不会发生竞争性的析氢反应。这为在中性水性电池和其他储能设备中使用NDI部分提供了机会。水性设备在很大程度上仅限于基于“醌-对苯二酚”的氧化还原对，即

更新日期：2021-01-25

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