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Graphical abstract Highlights • MnO-carbon hybrid nano-fibers are fabricated via an electrospinning method. • Sintering temperature has an important influence on the performance of the obtained composites. • Material synthesized under optimum temperature can exhibit ideal fiber appearance with MnO particles embedded into it. • Formation mechanism of the materials are also analyzed. Abstract In this paper, MnO-carbon hybrid nanofibers are fabricated via an electrospinning method, while polyvinyl alcohol (PVA) and manganese acetylacetonate are used as raw materials. Composition, phase structure, and morphology of the products obtained under different sintering temperatures are studied with modern analytical instruments, and the electrochemical properties of the MnO/C fibers used as the lithium ion battery anode are also studied by continuous charge/discharge procedures. The results demonstrate that sintering temperature has an important influence on the performance of the obtained composites, and there is an optimum value for synthesizing MnO/C composites. Material synthesized under 600 °C can exhibit an ideal fiber appearance with MnO particles embedded into the material and deliver the highest capacity among all samples. The formation mechanism of the materials is also analyzed in detail in this paper. [ABSTRACT FROM AUTHOR]

A new structured Mn 3 O 4 @C composite is fabricated with carbon filled in the pores and coated on the surface of the porous Mn 3 O 4 . This anode material exhibits superior electrochemical properties including high initial coulombic efficiency, outstanding rate properties and cycle performance. The initial coulombic efficiency of this composite approach to 69.5%, and it delivers a capacity of nearly 420 mAh g −1 even at a discharge current of 1800 mA g −1 . The outperforming results could be ascribed to the unique structure of the composite, which can provide meaningful guidance to the design of further anode materials. [ABSTRACT FROM AUTHOR]