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LiFePO4/C Microspheres with Nano-micro Structure, Prepared by Spray Drying Method Assisted with PVA as Template

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Abstract:

Microspherical and uniform LiFePO4/C was successfully prepared by a spray drying method assisted with template. The materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The as-synthesized LiFePO4/C was used as cathode materials for battery evaluation. The material prepared with PVA as template possess perfect olivine structure of lithium ion battery with uniform size distribution. A sample prepared with optimum conditions achieved a capacity of 156.7 mAh g–1 at a rate of 0.1 C, and no obvious degradation can be observed after 15 cycles at various rates. It was found that the template affected the structure and performance of the material significantly, the addition of polyvinyl alcohol (PVA) as template resulted in uniform microsphere morphology and high performance.

Keywords: LiFePO4/C; PVA; Spray drying; nano-micro microspheres; scanning electron microscopy; template

Document Type: Research Article

DOI: https://doi.org/10.2174/157341312800167551

Publication date: 2012-04-01

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  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
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