本发明属于电化学材料技术领域，具体为一种具有宽温区优越性能的锂离子电池负极材料及其制备方法。本发明方法包括：称取特定量的石墨单炔和商用钛酸锂粉末，加入适量无水乙醇，密封后置于行星式球磨机中，控制机械球磨合适的球磨条件；球磨产物经过充分干燥得到改性的锂离子电池钛酸锂负极材料‑‑钛酸锂/石墨单炔复合材料；相比于原来的纯钛酸锂材料，该复合材料显著提高了宽温度区间储锂比容量、倍率性能和循环稳定性；在‑20℃条件下，钛酸锂/石墨单炔复合电极在1C倍率下的可逆比容量为102 mAh g‑1，比纯钛酸锂电极提高了31%；在55℃条件下，1C倍率可逆比容量达到166 mAh g‑1，比纯钛酸锂电极提高了17%。
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