Metal–organic frameworks (MOFs) have received intensive scientific attention as electrode materials for lithium-ion batteries because of their tailorable physical and chemical properties by incorporating different organic ligands. Herein, a zinc-based MOF (Zn-MOF) with a special dual-ligand system, tris(4-(1H-1,2,4-triazol-1-yl)phenyl)amine and dihydroxylterepthate, as anode material for lithium-ion batteries is successfully fabricated. The activated Zn-MOF based battery delivered a reversible and efficient lithium storage capacity of ≈200 mA h g⁻¹ at 0.5 A g⁻¹ with a 99% Coulombic efficiency over 1000 cycles. The sweep rate cyclic voltammetry and ex situ Fourier transform infrared spectroscopy on the electrode materials at different charging/discharging states reveal that lithium insertion in the organic moiety with a diffusion-controlled process plays a critical role in the storage mechanism of the Zn-MOF anode. Further spectroscopic analysis reveals the excellent material stability of dual-ligand Zn-MOFs with limited solid–electrolyte interface growth under long-term charge–discharge operation, which is beneficial for next-generation battery anodes.

中文翻译：

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双配体锌基金属-有机骨架作为下一代锂离子电池的可逆和稳定负极材料

金属有机框架（MOF）作为锂离子电池的电极材料受到了广泛的科学关注，因为它们通过结合不同的有机配体而具有可定制的物理和化学性质。在本文中，具有特殊双​​配体系统的锌基 MOF (Zn-MOF)，三(4-(1 H -1,2,4-三唑-1-基)苯基)胺和二羟基对苯二甲酸酯，作为负极材料锂离子电池制造成功。活化的基于 Zn-MOF 的电池在 0.5 A g ^{-1 时}提供 ≈200 mAh g ^-1的可逆且高效的锂存储容量在 1000 次循环中具有 99% 的库仑效率。不同充电/放电状态下电极材料的扫描速率循环伏安法和非原位傅里叶变换红外光谱表明，锂嵌入有机部分的扩散控制过程在 Zn-MOF 负极的存储机制中起着关键作用. 进一步的光谱分析揭示了双配体 Zn-MOFs 在长期充放电操作下具有有限的固体电解质界面生长的优异材料稳定性，这有利于下一代电池负极。