One-Dimensional nanomaterials with large surface area, more surface active sites and better permeability can significantly increase the energy density, power density and cycling performance for the energy storage. Such hierarchical structure can also be used as targeted intracellular recording for its facile synthesis route. In our present work, a series of hierarchical nanomaterials have been obtained, including kinked hierarchical nanowires, hierarchical heterostructured nanowires and hierarchical scrolled nanowires which shows great electrochemical.

To increase the stability of Li-ion battery, V₃O₇ nanowire templated semi-hollow bicontinous graphene scrolls architecture is designed and constructed through “oriented assembly” and “self-scroll” strategy. The V₃O₇ nanowire templated semi-hollow bicontinous graphene scrolls with interior cavities provide continuous electron and lithium ion transfer channel and space for free volume expansion of V₃O₇ nanowires during cycling, thus representing a unique architecture for excellent lithium ion storage capacity and cycling performance. ¹ Besides, we have designed and synthesized hierarchical MnMoO₄/CoMoO₄ heterostructured nanowires by combining "oriented attachment" and "self-assembly". The asymmetric supercapacitors based on the hierarchical heterostructured nanowires show a high specific capacitance and good reversibility with a cycling efficiency of 98% after 1,000 cycles. ² Recently, we also constructed the hierarchical zigzag Na_1.25V₃O₈ nanowires, ³ K₃V₂(PO₄)₃ bundled nanowire, ⁴ and Li₃V₂(PO₄)₃ mesoporous nanotubes ⁵ with enhanced electrochemical performance. Our work presented here can inspire new thought in constructing novel nanofiber/nanowire structures and accelerate the development of energy storage appilications.

References

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