Synergistically Enhanced Electrochemical Performance of Hierarchical MoS2/TiNb2O7 Hetero-nanostructures as Anode Materials for Li-Ion Batteries

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• 作者：De Pham-Cong ; Jun Hee Choi ; Jeongsik Yun ; Aliaksandr S. BandarenkaJinwoo Kim ; Paul V. Braun ; Se Young JeongChae Ryong Cho
• 刊名：ACS Nano
• 出版年：2017
• 出版时间：January 24, 2017
• 年：2017
• 卷：11
• 期：1
• 页码：1026-1033
• 全文大小：634K
• ISSN：1936-086X

文摘

As potential high-performance anodes for Li-ion batteries (LIBs), hierarchical heteronanostructures consisting of TiNb<sub>2sub>O<sub>7sub> nanofibers and ultrathin MoS2 nanosheets (TNO@MS HRs) were synthesized by simple electrospinning/hydrothermal processes. With their growth mechanism revealed, the TNO@MS HRs exhibited an entangled structure both for their ionic and electronic conducting pathways, which enabled the synergetic combination of one- and two-dimensional structures to be realized. In the potential range of 0.001–3 V vs Li/Li<sup>+sup>, the TNO@MS HR-based LIBs exhibited high capacities of 872 and 740 mAh g<sup>–1sup> after 42 and 200 cycles at a current density of 1 A g<sup>–1sup>, respectively, and excellent rate performance of 611 mAh g<sup>–1sup> at 4 A g<sup>–1sup>. We believe that the fabrication route of TNO@MS HRs will find visibility for the use of anode electrodes for high capacity LIBs at low cost.