The N-doped porous carbon/NiCo₂O₄ (NPC/NiCo₂O₄) substance is designed and synthesized via hydrothermal treatment, polymerization, carbonization, activation, and chemical bath deposition. The as-prepared NPC/NiCo₂O₄ holds hemispherical flower-like structure that consists of two things: a porous bowl-shaped NPC at the inside, and sheet NiCo₂O₄ at the whole outside, in which NPC works as a scaffold for NiCo₂O₄ to restrain NiCo₂O₄ nanosheets from aggregation in the synthesis process and NiCo₂O₄ acts as a capacitive coating layer, and causing a synergic effect. The composite electrode has a specific capacitance of 948.30 F g⁻¹ at a current density of 1 A g⁻¹, enhanced rate capability (727.43 F g⁻¹ at 16 A g⁻¹) and good conductivity. Additionally, NPC/NiCo₂O₄ reaches a desirable cycling stability (87.4% capacitance retention after 2000 cycles even at a high current density of 10 A g⁻¹), suggesting a hopeful electrode material for the electrochemical supercapacitors.

通过水热处理，聚合，碳化，活化和化学浴沉积来设计和合成N掺杂多孔碳/ NiCo ₂ O ₄（NPC / NiCo ₂ O ₄）物质。制备的NPC / NiCo ₂ O ₄具有半球形的花状结构，该结构由两部分组成：内部为多孔碗状NPC，整个外部为片状NiCo ₂ O ₄，其中NPC用作支架NiCo ₂ O ₄在合成过程中抑制NiCo ₂ O ₄纳米片和NiCo ₂ O ₄聚集用作电容涂层，并产生协同作用。该复合电极具有一个948.30比电容 ˚F 克^-1以1:1的电流密度 甲 克^-1，提高的速率能力（727.43  ˚F 克^-1在16 甲 克^-1）和良好的导电性。另外，NPC / NiCo ₂ O ₄达到了理想的循环稳定性（即使在10  A  g ^-1的高电流密度下，在2000次循环后，电容保持率为87.4％），这为电化学超级电容器提供了一种有希望的电极材料。