Abstract Single metal-organic coordination polymers have limited functions as precursors for porous carbon electrode materials. The construction of bimetallic organic coordination polymers can effectively utilize the advantages of each single metal-organic coordination polymer to improve the performance of the derived carbon materials. Herein, High performance nitrogen-doped porous carbon (BCFe–Ni) have been produced by directly carbonizing bimetallic organic coordination polymers formed by 4,4′-bipyridine (BPD) reaction with FeCl3 and NiCl2. The BCFe–Ni exhibits high nitrogen content (12.66 at%), large specific surface area (1049.51 m2 g−1) and hierarchical porous structure, which contributes to an excellent gravimetric specific gravity of 320.5 F g−1 and 108% of specific capacitance retention after 10000 cycles. The BCFe–Ni assembled symmetrical supercapacitor shows an energy density of 18.3 W h kg−1 at a power density of 350 W kg−1. It is expected that the as-prepared N-doped porous carbon derived from bimetallic-organic coordination polymer is a promising electrode material for high performance energy storage devices.

中文翻译：

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双金属-有机配位聚合物制备用于高性能超级电容器的 N 掺杂分级多孔碳

摘要 单一金属-有机配位聚合物作为多孔碳电极材料的前驱体功能有限。双金属有机配位聚合物的构建可以有效地利用每种金属有机配位聚合物的优点来提高衍生碳材料的性能。在此，高性能氮掺杂多孔碳 (BCFe-Ni) 通过直接碳化由 4,4'-联吡啶 (BPD) 与 FeCl3 和 NiCl2 反应形成的双金属有机配位聚合物制备。BCFe-Ni 表现出高氮含量 (12.66 at%)、大比表面积 (1049.51 m2 g-1) 和分级多孔结构，这有助于实现 320.5 F g-1 的优异重量比重和 108% 的比电容10000 次循环后的保留。BCFe-Ni 组装的对称超级电容器在 350 W kg-1 的功率密度下显示出 18.3 W h kg-1 的能量密度。预计所制备的源自双金属 - 有机配位聚合物的 N 掺杂多孔碳是一种有前途的高性能储能器件电极材料。