کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1732721 1521481 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Multi-functional energy conversion and storage electrodes using flower-like Zinc oxide nanostructures
ترجمه فارسی عنوان
الکترودهای تبدیل و ذخیره انرژی چند منظوره با استفاده از نانوساختارهای اکسید روی گل مانند
کلمات کلیدی
اکسید روی، گلبرگ نانوساختار، سلول خورشیدی حساسیت شده به رنگ، بهره وری تبدیل انرژی باتری لیتیوم، رفتار دوچرخه سواری
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی


• Flower-like ZnO (Zinc oxide) nanostructured particles are easily obtained by hydrothermal method.
• Low temperature, low cost, scalable and reproducible synthesis conditions are used.
• ZnO particles are used for both energy storage (battery) and conversion (solar cell).
• Valuable sunlight efficiency conversion and high electron diffusion length in DSC (Dye-sensitized Solar Cell).
• High specific capacity and long-term cyclability were obtained in Li-ion battery.

In the present paper we demonstrate the efficient use of shape controlled flower-like ZnO (Zinc oxide) nanostructured particles as multifunctional electrode for both energy conversion and storage applications, i.e. Dye-sensitized Solar Cells (DSCs) and lithium-ion batteries.As regards DSC (Dye-sensitized Solar Cell) device, ZnO flower-like particles, prepared by a simple, low-cost and reliable hydrothermal method under mild reaction temperature, are efficiently used as photoanode in a microfluidic architectured cell in combination with NMBI (N-methylbenzimidazole), employed as additive of the electrolytic solution for the first time in a ZnO-based DSC. We obtain a remarkable sunlight conversion efficiency of 3.6%.As regards storage applications, a stable long-term ambient temperature cycling behavior in lithium cell is demonstrated, even at increasingly higher currents. Remarkable charge-discharge efficiency and specific capacity are obtained up to 200 cycles, which is the highest number of cycles reported so far for similar systems. Noteworthy, such results are achieved without the addition of foreign additives, nor during the synthesis process neither during the electrode preparation, and also no carbon coating on ZnO surface is used.The originality of the present paper consists not only in showing for the first time the efficient operation of such ZnO particles as anode in Li-ion batteries for prolonged cycling, but also in demonstrating the versatile and multifunctional use of the same material for two different energy related applications. The reported results enlighten indeed the promising prospects of the flower-like ZnO nanostructured material for the successful implementation as stable and long-term performing anodic material in the next generation of both energy conversion and storage devices.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 65, 1 February 2014, Pages 639–646
نویسندگان
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