A flexible Ni-Ni(OH)₂/carbon nanofiber (CNF) composite material was fabricated via electrospinning followed by a high-temperature carbonization and hydrothermal process. The Ni-Ni(OH)₂/CNFs calcined at 800°C exhibited excellent electrochemical performance, with high specific capacitance of 763 F g⁻¹ (1 A g⁻¹). Moreover, the material showed good stability, with 94% capacitance retention after 8000 cycles. This work proves that Ni-Ni(OH)₂/CNFs are a promising candidate for use as a high-efficiency supercapacitor electrode material.

中文翻译：

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Ni-Ni（OH）2 /碳纳米纤维电纺丝作为具有增强的比电容的无粘结剂柔性超级电容器电极

通过静电纺丝，高温碳化和水热工艺制备了一种柔性的Ni-Ni（OH）₂ /碳纳米纤维（CNF）复合材料。在800℃下煅烧的Ni-Ni（OH）₂ / CNFs表现出优异的电化学性能，具有763 F g ^-1（1 A g ^-1）的高比电容。此外，该材料显示出良好的稳定性，在8000次循环后具有94％的电容保持率。这项工作证明了Ni-Ni（OH）₂ / CNFs有望用作高效超级电容器电极材料。