Interface-modulated approach toward multilevel metal oxide nanotubes for lithium-ion batteries and oxygen reduction reaction
interface-modulatedapproach, multilevel nanotubes, metal oxide, lithium-ion battery (LIB), oxygen reduction reaction(ORR)
Metal oxide hollow structures with multilevel interiors are of great interest forpotential applications such as catalysis, chemical sensing, drug delivery, andenergy storage. However, the controlled synthesis of multilevel nanotubes remainsa great challenge. Here we develop a facile interface-modulated approach towardthe synthesis of complex metal oxide multilevel nanotubes with tunable interiorstructures through electrospinning followed by controlled heat treatment. Thisversatile strategy can be effectively applied to fabricate wire-in-tube and tubein-tube nanotubes of various metal oxides. These multilevel nanotubes possessa large specific surface area, fast mass transport, good strain accommodation, andhigh packing density, which are advantageous for lithium-ion batteries (LIBs)and the oxygen reduction reaction (ORR). Specifically, shrinkable CoMn2O4tube-in-tube nanotubes as a lithium-ion battery anode deliver a high dischargecapacity of ~565 mAh·g−1 at a high rate of 2 A·g−1, maintaining 89% of the latterafter 500 cycles. Further, as an oxygen reduction reaction catalyst, these nanotubesalso exhibit excellent stability with about 92% current retention after 30,000 s,which is higher than that of commercial Pt/C (81%). Therefore, this feasiblemethod may push the rapid development of one-dimensional (1D) nanomaterials.These multifunctional nanotubes have great potential in many frontier fields.
Tsinghua University Press
Jiashen Meng,Chaojiang Niu,Xiong Liu,Ziang Liu,Hongliang Chen,Xuanpeng Wang,Jiantao Li,Wei Chen,Xuefeng Guo,Liqiang Mai, Interface-modulated approach toward multilevel metal oxide nanotubes for lithium-ion batteries and oxygen reduction reaction. NanoRes.2016, 9(8): 2445–2457