Ko YW

Li L

Madhavi S

Pramana SS

Su T

Teh PF

Wong CL

\ua9 2015 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim. Single-phase Na&lt;inf&gt;1.2&lt;/inf&gt;V&lt;inf&gt;3&lt;/inf&gt;O&lt;inf&gt;8&lt;/inf&gt; materials with single and hierarchical nanobelt morphologies were prepared by using a versatile electrospinning technique by altering the sintering profiles. On the basis of characterization by field-emission scanning electron microscopy and high-resolution transmission electron microscopy, the formation mechanisms of products with tunable morphologies are discussed. The products obtained are employed as cathode materials for lithium-ion batteries. Their electrochemical activities are demonstrated through galvanostatic cycling and cyclic voltammetry. The non-agglomerated, single nanobelts with exposed (100) facets, which serve as channels for facile lithium diffusion, are capable of exhibiting higher maximum capacities of approximately 218 mAhg&lt;sup&gt;-1&lt;/sup&gt; compared to hierarchical nanobelts with a maximum capacity of approximately 197 mAhg&lt;sup&gt;-1&lt;/sup&gt; versus Li/Li&lt;sup&gt;+&lt;/sup&gt; at a current density of 200 mAg&lt;sup&gt;-1&lt;/sup&gt;. Their associated reversible capacities are approximately 207 and 173 mAhg&lt;sup&gt;-1&lt;/sup&gt;, respectively, after 100 cycles. Single nanobelts with individual belt-like structures and preferred facet orientation also exhibit better rate capabilities

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Electrospun Single-Phase Na1.2V3O8 Materials with Tunable Morphologies as Cathodes for Rechargeable Lithium-Ion Batteries

Electrospun Single-Phase Na<sub>1.2</sub>V<sub>3</sub>O<sub>8</sub> Materials with Tunable Morphologies as Cathodes for Rechargeable Lithium-Ion Batteries

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