The construction of battery-type cathodes with glorious electrochemical features is of great significance for hybrid supercapacitors. Herein, an effective one-step calcination strategy is demonstrated for the fabrication of nickel sulfide and cobalt sulfide nanoparticles deposited on ultrathin carbon two-dimensional nanosheets (Ni₃S₂/Co₉S₈/C) by employing sodium sulfate (Na₂SO₄) as the sulfur source and template. Benefiting from the remarkable combination of multiple functional components and the ultrathin two-dimensional architecture, the constructed Ni₃S₂/Co₉S₈/C cathode features with a commendable capacity of 1160 C g^-1 (2320 F g^-1) at 1 A g^-1 and a decent cyclic capability at 10 A g^-1 (91.3% after 10000 cycles). In addition, the manufactured hybrid supercapacitor with Ni₃S₂/Co₉S₈/C cathode and p-phenylenediamine modified graphene (PMG) anode achieves a maximum energy density of 69.6 Wh kg^-1 at 970.5 W kg^-1 and an appropriate cyclic capability of 82.6% after 20000 cycles. These fascinating results reveal the great potential of Ni₃S₂/Co₉S₈/C ultrathin nanosheets for practical application.

构建具有优异电化学特性的电池型正极对于混合超级电容器具有重要意义。本文所用的有效的一步煅烧策略证明了的硫化镍和硫化钴纳米颗粒沉积的制造上的超薄碳二维纳米片（的Ni ₃小号₂ / Co的₉小号₈ / C）通过采用硫酸钠（Na ₂ SO ₄ )作为硫源和模板。受益于多种功能组件和超薄二维结构的显着组合，构建的Ni ₃ S ₂ /Co ₉ S ₈/C 正极在 1 A g ^-1时具有值得称道的 1160 C g ^-1 (2320 F g ^-1 )容量，在 10 A g ^{-1 时}具有不错的循环能力（10000 次循环后为 91.3%）。另外，所制造的混合超级电容器用Ni ₃小号₂ / Co的₉小号₈ / C阴极和p苯二胺改性的石墨烯（PMG）阳极达到69.6瓦公斤的最大能量密度^-1在970.5千克w ^ ^-1和适当的20000 次循环后的循环能力为 82.6%。这些引人入胜的结果揭示了 Ni ₃ S ₂ /Co ₉的巨大潜力用于实际应用的S ₈ /C 超薄纳米片。