Abstract Spherical ZnTiO3 / multi-walled carbon nanotube (ZnTiO3 / MWCNTs) composite was synthesized via a simple one-step solvothermal strategy with subsequent sintering process. The obtained ZnTiO3 nanospheres in pure ZnTiO3 and ZnTiO3 / MWCNTs materials have a diameter of about 200–300 nm. The MWCNTs are well dispersed ZnTiO3 electrode materials and form a three-dimensional conductive network structure. The ZnTiO3 / MWCNTs composite shows higher reversibility of intercalation and deintercalation for Li ions, better electrochemical activity and smaller electrochemical polarization than those of ZnTiO3 negative electrode during cycling. The lithiation (delithiation) capacities for pure ZnTiO3 are only 270.9 (516.5), 256.3 (262.9), 201.8 (199.3), 162.3 (161.6), 131.4 (129.9) and 89.9 (90.4) mAh g−1 at the current densities of 50, 100, 300, 500, 800 and 1600 mA g−1, respectively. However, the ZnTiO3 / MWCNTs composite delivers lithiation (delithiation) capacities of 349.3 (633.0), 321.6 (329.1), 264.9 (262.5), 230.6 (229.2), 188.6 (188.5) and 136.4 (135.9) mA h g−1 at the same rates. The remarkable high rate capability of ZnTiO3 / MWCNTs electrode can be owed to the uniform distribution of ZnTiO3 nanopheres within the carbon matrix conductive network and the improvement of electronic conductivity. The results further indicate that MWCNTs modification is an effective mean to improve electrochemical properties of ZnTiO3 electrode material.

中文翻译：

---

构建球形ZnTiO3/MWCNTs复合材料作为高性能锂离子电池负极材料

摘要 通过简单的一步溶剂热策略和随后的烧结过程合成了球形 ZnTiO3/多壁碳纳米管 (ZnTiO3/MWCNTs) 复合材料。在纯 ZnTiO3 和 ZnTiO3 / MWCNTs 材料中获得的 ZnTiO3 纳米球的直径约为 200-300 nm。MWCNTs是分散良好的ZnTiO3电极材料，形成三维导电网络结构。ZnTiO3/MWCNTs复合材料在循环过程中表现出比ZnTiO3负极更高的锂离子嵌入和脱嵌可逆性、更好的电化学活性和更小的电化学极化。纯 ZnTiO3 的锂化（脱锂）容量仅为 270.9 (516.5)、256.3 (262.9)、201.8 (199.3)、162.3 (161.6)、131.4 (129.9) 和 89.9 (90.9) 毫安时的电流密度 (90.9) , 100, 300, 500, 分别为 800 和 1600 mA g-1。然而，ZnTiO3 / MWCNTs 复合材料的锂化（脱锂）容量为 349.3 (633.0)、321.6 (329.1)、264.9 (262.5)、230.6 (229.2)、188.6 (188.5) 和 136-4 (136-4) mA-g。率。ZnTiO3 / MWCNTs 电极显着的高倍率性能可归因于 ZnTiO3 纳米球在碳基导电网络中的均匀分布和电子电导率的提高。结果进一步表明MWCNTs改性是提高ZnTiO3电极材料电化学性能的有效手段。ZnTiO3 / MWCNTs 电极显着的高倍率性能可归因于 ZnTiO3 纳米球在碳基导电网络中的均匀分布和电子电导率的提高。结果进一步表明MWCNTs改性是提高ZnTiO3电极材料电化学性能的有效手段。ZnTiO3 / MWCNTs 电极显着的高倍率性能可归因于 ZnTiO3 纳米球在碳基导电网络中的均匀分布和电子电导率的提高。结果进一步表明MWCNTs改性是提高ZnTiO3电极材料电化学性能的有效手段。