Developing fast-charging high-energy lithium-ion battery, with a charging time of 8-10 min, is highly urgent in upcoming applications but still is a challenge. Although various routes have been proposed, almost all the reports for high-rate anodes are simply investigated under non-industrial electrode conditions due to the lack of developed ion transport path. Herein, we develop a novel Ti₂O₃-based composite microspheres that Ti₂O₃ nanocrystals are uniformly distributed in carbon matrix followed by growing vertical graphene nanosheets on surface of microspheres. The surface-growth graphene, together with carbon matrix, construct a highly developed Li⁺ transport route in whole electrode, which endows the composite microspheres with fast charging/discharge behaviors under industrial electrode conditions (areal capacity loading of above 3.2 mAh cm⁻², amount of binder and conductive agents of below 4 wt%, and electrode density of above 1.6 g cm⁻³). In full cell, a high energy density of 80.4 Wh kg⁻¹ is achieved at a charge time of only 7.8 min at 5 C and retains 66.9% of energy density obtained at 0.1 C, which is among the top in previous reports on fast-charging high-energy lithium-ion batteries.

开发快速充电的高能锂离子电池，充电时间为 8-10 分钟，在即将到来的应用中非常紧迫，但仍然是一个挑战。尽管已经提出了各种途径，但由于缺乏发达的离子传输路径，几乎所有关于高倍率阳极的报道都只是在非工业电极条件下进行研究。在此，我们开发了一种新型 Ti ₂ O ₃基复合微球，其中 Ti ₂ O ₃纳米晶体均匀分布在碳基质中，然后在微球表面生长垂直的石墨烯纳米片。表面生长的石墨烯与碳基体一起构建了高度发达的 Li ⁺整个电极中的传输路径，使复合微球在工业电极条件下具有快速充电/放电行为（面积容量负载高于 3.2 mAh cm ^-2，粘合剂和导电剂的量低于 4 wt%，电极密度高于1.6 克厘米^-3）。在全电池中，在 5 C 下仅 7.8 分钟的充电时间就实现了 80.4 Wh kg ^-1的高能量密度，并保留了 0.1 C 时获得的能量密度的 66.9%，这是之前关于快速-为高能锂离子电池充电。