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NiCo-MOFs porous nanomaterials prepared by different organic frameworks as anodes for li-ion batteries

Shengnan Lin,Tingan Zhang

With the upgrading of mobile and portable electronic devices, people have higher requirements for the performance of batteries , and anode materials, as one of the factors affecting the electrochemical performance of lithium ion storage, have become a hot spot of widespread concern. This paper illustrates a creative and effective strategy to synthesize four different NiCo-MOFs materials. After studying their respective unique structural features, it was found that, unlike the topologies of NiCo-PTA (terephthalic acid) and NiCo-H 3 BTC (trimesic acid), the substitution of Ni and Co for N occurred in NiCo-EDTA (ethylenediaminetetraacetic acid) and NiCo-BI (benzimidazole). Electrochemical studies show that NiCo-PTA, NiCo-EDTA, NiCo-H 3 BTC, and NiCo-BI all have high initial discharge specific capacities of 1770.41576.11905.1 and 1877.5 mAh/g at a current density of 100 mA/g. When NiCo-EDTA and NiCo-BI are cycled at a current density of 100 mA/g, the specific capacity decreases more slowly than NiCo-PTA and NiCo-H 3 BTC. Similarly, the capacity of NiCo-PTA and NiCo-H 3 BTC almost began to rise at the 70th cycle, the capacity of NiCo-BI began to rise at the 67th cycle, and NiCo-EDTA showed the slowest rise at the 78th cycle, they all showed excellent cycle performance.