A novel metal‐organic framework (MOF) composition containing three cations (CoCuNi−MOF) grown directly on nickel foam substrate has been evaluated for its use as an anode material for lithium ion batteries (LIB) and benchmarked the performance with its single cation MOF counterparts. Equimolar concentrations of cobalt, copper, and nickel and 1,4‐benzenedicarboxylic acid are used as metal centers and organic linker, respectively, for synthesis of CoCuNi−MOF. The morphology, chemical structure, and electrochemical properties of the materials are studied and analyzed for their suitability for lithium ion storage. The cyclability performance of CoCuNi−MOF exhibit good behavior with retaining ∼490 (±3) and ∼396 (±3) mA⋅h⋅g⁻¹ at ∼200 and ∼500 mA⋅g⁻¹, respectively. During rate capability evaluation, CoCuNi−MOF proved to be the best material compared to its single component MOF: CoCuNi−MOF retained an average capacity of ∼565 (±3) mA⋅h⋅g⁻¹ at current density as high as 1000 mA⋅g⁻¹. The positive attributes of CoCuNi−MOF are shown to arise from the synergistic effect of the three transition metals. The output from this work is expected to provide useful insight into the design of new MOFs electrode for LIBs with high specific capacity and improved cycle stability.

中文翻译：

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高容量和高倍率性能的无粘结剂三元过渡金属有机框架作为锂离子电池的负极材料

已评估了一种直接在泡沫镍基材上直接生长的，包含三种阳离子的新型金属有机骨架（MOF）组合物（CoCuNi-MOF）用作锂离子电池（LIB）的负极材料的性能，并通过其单阳离子MOF对其性能进行了基准测试同行。钴，铜，镍和1,4-苯二甲酸的等摩尔浓度分别用作金属中心和有机连接基，用于合成CoCuNi-MOF。研究并分析了材料的形态，化学结构和电化学性能，以了解其适合锂离子存储的特性。CoCuNi-MOF的循环性能表现出良好的行为，在〜200和〜500 mA· g ^-1时保持〜490（±3）和〜396（±3）mA· h·g ^-1， 分别。在速率能力评估中，与单组分MOF相比，CoCuNi-MOF被证明是最好的材料：在电流密度高达1000 mA时，CoCuNi-MOF保持平均容量约为565（±3）mA·h⋅g ^-1 ⋅g ^-1。CoCuNi-MOF的正面属性显示为来自三种过渡金属的协同效应。这项工作的输出有望为具有较高比容量和改善的循环稳定性的LIB新型MOF电极设计提供有用的见识。