金属有机骨架（MOFs）因其作为储能材料的潜力而受到了广泛关注。在本研究中，通过一锅溶剂热法，使用溶解在N, N-二甲基甲酰胺（DMF）中的CoCl3·6H2O和FeCl3·6H2O合成了氮掺杂的铁钴双金属MOFs（FeCo/N-MOFs）。随后在氮气氛围下通过热解转化为独特的铁钴双金属镶嵌氮掺杂多孔碳（FeCo@NPC）多面体。在热解过程中，有机配体转变为氮掺杂多孔碳，从而提高了电导率和整体结构稳定性。同时，铁和钴金属粒子紧密的结合在一起被氮掺杂碳包覆着，分散在碳基体中。铁和钴协同作用提高材料的导电性、稳定性以及提供额外的容量。当用作锂离子电池的负极时，在0.5 A g-1的电流密度下经过500次循环后，其可逆容量保持在1146.3 mAh g-1。据此，可以认为FeCo@NPC是一种较有前景的锂离子电池负极材料。
Metal-organic frameworks(MOFs)are import-ant as possible energy storage ***-doped iron-cobalt MOFs were synthesized by a one-pot solvo-thermal method using CoCl_(3)·6H_(2)O and FeCl_(3)·6H_(2)O dis-solved in...
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Metal-organic frameworks(MOFs)are import-ant as possible energy storage ***-doped iron-cobalt MOFs were synthesized by a one-pot solvo-thermal method using CoCl_(3)·6H_(2)O and FeCl_(3)·6H_(2)O dis-solved in N,N-dimethylformamide,and were converted into Fe-Co embedded in N-doped porous carbon polyhedra by pyrolysis in a nitrogen *** pyrolysis,the or-ganic ligands transformed into N-doped porous carbon which improved their structural stability and also their electrical contact with other *** Fe and Co are tightly bound together because of their encapsulation by the carbon nitride and are well dispersed in the carbon matrix,and improve the material’s conductivity and stability and provide additional *** used as the anode for lithium-ion batteries,the material gives an initial capacity of up to 2230.7 mAh g^(-1)and a reversible capa-city of 1146.3 mAh g^(-1)is retained after 500 cycles at a current density of 0.5 A g^(-1),making it an excellent candidate for this purpose.
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