本发明公开了一种NiO@@石墨烯纤维超级电容器电极材料的制备方法，所述制备方法为包括还原氧化石墨烯，获取石墨烯纤维；以及在石墨烯纤维的表面，通过水热法法包覆生长NiO等步骤。制得的NiO@石墨烯纤维超级电容器电极材料的微结构为NiO包覆石墨烯纤维，具有非常大的比表面积，有效的提高了电极的比表面积和空间利用率，提升了电极材料的比电容、倍率性能及电化学稳定性。在超级电容器三电极体系测试中，本发明制得的材料在2 A g‑1的电流密度下表现出134 F g‑1的高比容量，表现出良好的电化学性能。且制备方法具有简单、成本低等优点。
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