کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1286743 1497966 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mica-like vanadium pentoxide-nanostructured thin film as high-performance cathode for lithium-ion batteries
ترجمه فارسی عنوان
نازک ورقه نانوکامپوزیتی وانادیوم مانند کاتد با کارایی بالا برای باتری های لیتیوم یون
کلمات کلیدی
مانند میکا، نانوساختار، پنتاکسید وانادیوم، فیلم نازک، باتری های لیتیوم یون، مواد کاتدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی


• Mica-like V2O5 nanostructured thin-film is fabricated directly by anodic electrodeposition.
• Mica-like V2O5 thin-films are formed by nanosheets with thickness less than 50 nm.
• The initial discharge capacity of V2O5 thin-film was 596 mAh g−1 at 1080 mA g−1.
• The fading rate of V2O5 thin-film was 1% per cycle at 1080 mA g−1.

Stable and homogeneous mica-like vanadium pentoxide (V2O5)-nanostructured thin films are prepared directly by simple anodic deposition from V2O5/H2O2 sol solution, and then dried at ambient temperature and annealed at 500 °C in air for 1 h. The films' crystal- and microstructures, surface morphology and Li-ion intercalation properties were characterized and analyzed by X-Ray diffraction (XRD), field emission scanning electron microscopy (FSEM), thermogravimetric analysis (TGA), and electrochemical techniques. When used as a lithium-ion battery (LIB) cathode, the films exhibit a large discharge capacity of 596 mAh g−1 at a current density of 1080 mA g−1, as well as excellent cyclic stability and a fading rate of 1% per cycle. Explanations for such significant enhancements in specific capacity, cyclic stability, and rate performance of mica-like V2O5-nanostructured thin films are demonstrated in this study.

The mica-like V2O5 nanostructured thin films exhibit significant enhancement of lithium-ion intercalation capacity, excellent cyclic stability and rate performance due to its unique morphology, the nanostructure, and introduced oxygen vacancies.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 266, 15 November 2014, Pages 1–6
نویسندگان
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