In this work, the hybrid structure of NiCo₂S₄ nanosheets onto graphitized carbon microspheres (GCMS@NiCo₂S₄) electrode material has been rationally fabricated by using a rapid, facile, and efficient strategy, and the synergistic effect of NiCo₂S₄ and GCMS on the enhanced supercapacitors performance is explored. The GCMS@NiCo₂S₄ electrode with capacitive dominated feature exhibited a high specific capacitance (1595.1 F g ⁻¹ at 1 A g ⁻¹) and as well as excellent cyclic stability (92% retention after 5000 cycles), which were higher than these of the electrode without GCMS (i.e. pure NiCo₂S₄). Charge storage analysis reveals that the capacitive dominated feature of GCMS@NiCo₂S₄ electrode is observed. Additionally, the as-synthesized asymmetric supercapacitor by using GCMS@NiCo₂S₄ electrode displays a maximum specific energy of 50.2 Wh kg⁻¹ at a specific power of 799.9 W kg⁻¹, together with good cyclic life with 91% capacity retention over 10000 cycles at 10 A g⁻¹. These remarkable electrochemical performances demonstrate that GCMS@NiCo₂S₄ has excellent potential applications in high efficient electrochemical supercapacitor.

在这项工作中，通过使用快速，便捷和有效的策略合理地制备了NiCo ₂ S ₄纳米片在石墨化碳微球（GCMS @ NiCo ₂ S ₄）电极材料上的杂化结构，并产生了NiCo ₂ S的协同效应。₄和GCMS对增强型超级电容器性能的研究。在GCMS @镍钴₂小号₄具有电容主导特征电极表现出高的比电容（1595.1 F G ^-1 1 A G ^-1）以及出色的循环稳定性（5000次循环后92％的保留率），高于没有GCMS的电极（即纯NiCo ₂ S ₄）。电荷存储分析表明，观察到了GCMS @ NiCo ₂ S ₄电极的电容主导特征。另外，所合成的不对称超级电容器通过使用GCMS @镍钴₂小号_4个电极显示50.2瓦公斤的最大比能量^-1在799.9特定功率W.千克^-1，连同良好的循环寿命与91％的容量保持率在10000次循环在10 A g ^-1下。这些出色的电化学性能表明，GCMS @ NiCo₂ S ₄在高效电化学超级电容器中具有极好的潜在应用。