本发明公开了一种镍钴锰氢氧化物@中空介孔碳球纳米复合材料及其制备方法。以中空介孔碳球作为微型纳米反应器，通过调控其含量调控镍钴锰氢氧化物纳米片在中空介孔碳球内外表面的限域生长。该分级球型纳米结构使电极材料拥有较高的活性比表面积和较短的离子传输路径，在充放电过程中维持较好的结构稳定性；镍钴锰氢氧化物纳米片在碳球内外生长，可提高活性材料的堆积密度，提供额外的反应活性位点，在电流密度为1 A g‑1时其比电容达到1455.2 C cm‑3，在电流密度达20 A g‑1时其比电容仍高达1005.0 C cm‑3，表现出较好的倍率性；在电流密度为10 A g‑1的条件下测试其循环性能，5000圈后容量保持率达86.8%，具有很好的循环稳定性。
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