کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6610812 459557 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Simple Synthesis of Two-Dimensional Ultrathin Nickel Cobaltite Nanosheets for Electrochemical Lithium Storage
ترجمه فارسی عنوان
سنتز ساده ی نانوساختار کبالتیت نیکل دو طرفه یونیتی برای ذخیره سازی لیتیوم الکتروشیمیایی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
We report a simple microwave-assisted method to fabricate high-quality two-dimensional (2D) ultrathin NiCo2O4 nanosheets with a geometrically graphene-like architecture. The unique large-area nanostructures represent an ultrahigh surface atomic ratio with almost all active elements exposed outside for surface-dependent electrochemical reaction processes. Experimental results reveal that the as-synthesized ultrathin NiCo2O4 nanosheets show excellent electrochemical performances for lithium storage application. The ultrathin NiCo2O4 nanosheets could deliver a high first discharge capacity (1287.1 mAh g−1) with initial Coulombic efficiency of 80.0% at 200 mA g−1 current density. The reversible lithium storage capacity still retains at 804.8 mAh g−1 in the 100th cycle, suggesting a good cycling stability. The excellent electrochemical properties of the as-synthesized NiCo2O4 nanosheets could be ascribed to the unique ultrathin 2D architecture, which could offer large exposed active surface with more lithium-insertion channels and significantly reduce lithium ion diffusion distance. The cost-efficient synthesis and excellent lithium storage properties make the 2D NiCo2O4 nanosheets as a promising anode material for high-performance lithium ion batteries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 176, 10 September 2015, Pages 141-148
نویسندگان
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