کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1525874 1511847 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure and electrochemical performance of LiV3O8 synthesized by solid-state routine with quenching in freezing atmosphere
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Structure and electrochemical performance of LiV3O8 synthesized by solid-state routine with quenching in freezing atmosphere
چکیده انگلیسی

Layered LiV3O8 compound was synthesized by solid-state reaction with quick quenching in freezing air. Its structure, morphology and grain size were tested by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and scanning electron microscopy (SEM) experiments. The results show that the compound has pure phase, low crystallinity and homogeneous morphology with large interlayer distance. The electrochemical performances were measured by charge–discharge cycling, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results indicate that the compound has more Li+ ions insertion/extraction sites and is beneficial to Li+ ions reversible movement. It delivers the respective capacities of 256 and 189 mAh g−1 in the 1st and 30th cycles at the charge–discharge rates of 0.25C, and 208 and 172 mAh g−1 at the charge–discharge rates of 0.5C, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 114, Issues 2–3, 15 April 2009, Pages 915–919
نویسندگان
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