Abstract In this study, we propose composite materials based on the Li–Mn–Ti–O system to develop low cost and environmentally benign cathode materials for Li-ion batteries. Specifically, spinel-layered Li2MnTiO4+z (0.5LiMnTiO4•0.5Li2Mn0·5Ti0·5O3) material is studied with the aim to increase the operating voltage of the cathode. In contrast, to increase the capacity as well as rate capability of the cathode, an electrospinning technique is employed to synthesize uniform nanofibers with diameters of approximately 80 nm and a length of 15 μm. The hetero- and one-dimensional structure of the prepared sample facilitate Li+ transport by shortening the diffusion length for the ions. Consequently, high capacities of 210 (average operating voltage ~3.1 V) and 150 mAh g−1 at C/10 and 1C rates, respectively, are obtained.

中文翻译：

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尖晶石层状Li2MnTiO4+纳米纤维作为锂离子电池正极材料

摘要 在这项研究中，我们提出了基于 Li-Mn-Ti-O 系统的复合材料，以开发低成本、环境友好的锂离子电池正极材料。具体而言，研究了尖晶石层状Li2MnTiO4+z（0.5LiMnTiO4•0.5Li2Mn0•5Ti0•5O3）材料，以提高正极的工作电压。相比之下，为了提高阴极的容量和倍率性能，采用静电纺丝技术合成直径约为 80 nm 和长度为 15 μm 的均匀纳米纤维。所制备样品的异质和一维结构通过缩短离子的扩散长度来促进 Li+ 传输。因此，分别在 C/10 和 1C 倍率下获得了 210（平均工作电压~3.1 V）和 150 mAh g-1 的高容量。