Abstract Symmetric 2D Mesoporous Graphitic Carbon spinel cobalt ferrite (CoFe2O4/2D-C) with high porosity has been fabricated via a facile and swift sucrose template microwave combustion process followed by an additional annealing treatment. The CoFe2O4/2D-C composite comprises carbon coated spinel cobalt ferrite with densely connected porous layered structure facilitating fast electron and ion transport. Benefiting from such an inimitable structure, CoFe2O4/2D-C is employed as supercapacitors electrode material and exhibited a high specific capacitance (1318.1 Fg−1 at 2.5 A g−1 current density) and energy density (77.3 W h kg−1) with an excellent electrochemical capacity retention of 97.2 % after 4000 cycles. Power law which expresses the dependence of peak CV current on scan rate at fixed potential confirmed that, the charge storage mechanism for the electrode material (CoFe2O4/2D-C) is influenced congruently by both the capacitive and diffusive controlled process which promoted an efficient energy storage for CoFe2O4/2D-C. Accordingly, this outstanding performance put forward its application as an effective material for electrochemical capacitors.

中文翻译：

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诱导对称二维介孔石墨碳尖晶石钴铁氧体 (CoFe2O4/2D-C) 具有高孔隙率，通过简便快速的蔗糖模板化微波燃烧路线制造，以提高超级电容性能

摘要 具有高孔隙率的对称 2D 介孔石墨碳尖晶石钴铁氧体 (CoFe2O4/2D-C) 已通过简便快速的蔗糖模板微波燃烧过程和额外的退火处理制成。CoFe2O4/2D-C 复合材料包含碳包覆的尖晶石钴铁氧体，具有致密连接的多孔层状结构，有助于快速电子和离子传输。受益于这种独特的结构，CoFe2O4/2D-C 被用作超级电容器电极材料，并表现出高比电容（1318.1 Fg-1 在 2.5 A g-1 电流密度下）和能量密度（77.3 W h kg-1）与在 4000 次循环后具有 97.2% 的优异电化学容量保持率。表达峰值 CV 电流对固定电位扫描速率的依赖性的幂律证实，电极材料 (CoFe2O4/2D-C) 的电荷存储机制受到电容和扩散控制过程的一致影响，这促进了 CoFe2O4/2D-C 的有效能量存储。因此，这种优异的性能使其成为一种有效的电化学电容器材料。