Abstract A S/CNTs/La2O3 composite with microsphere morphology was prepared by facile one-pot spray drying method. La2O3 nanoplates are anchored tightly in interlaced CNTs framework to form a highly efficient sulfur host. Benefiting from synergistic effects of nonpolar CNTs and polar La2O3 in both enhancing conductivity and capturing polysulfide by physical and chemical adsorptions, the novel S/CNTs/La2O3 composite exhibited superior electrochemical properties in lithium/sulfur battery. The S/CNTs/La2O3 cathode exhibited initial reversible discharge capacity of 1251 mAh g−1 and maintained 1011 mAh g−1 capacity after 100 cycles at 0.1 C. The capacity decay rate of S/CNTs/La2O3 cathode was as low as 0.067% per cycle over 300 cycles at 1.0 C, showing good long-cycling stability.

中文翻译：

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锚定在三维碳纳米管微球中的 La2O3 纳米板的杂化物作为高性能锂/硫电池的有效硫主体

摘要 采用简便的一锅喷雾干燥法制备了具有微球形态的AS/CNTs/La2O3复合材料。La2O3 纳米片被紧密地固定在交错的 CNTs 框架中，以形成高效的硫主体。受益于非极性 CNTs 和极性 La2O3 在增强电导率和通过物理和化学吸附捕获多硫化物方面的协同作用，新型 S/CNTs/La2O3 复合材料在锂/硫电池中表现出优异的电化学性能。S/CNTs/La2O3正极的初始可逆放电容量为1251 mAh g-1，0.1 C下循环100次后仍保持1011 mAh g-1容量。S/CNTs/La2O3正极的容量衰减率低至0.067%每个循环在 1.0 C 下循环超过 300 次，显示出良好的长循环稳定性。