کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1528796 1511981 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solvothermal synthesis of V2O5/graphene nanocomposites for high performance lithium ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Solvothermal synthesis of V2O5/graphene nanocomposites for high performance lithium ion batteries
چکیده انگلیسی
In this work, V2O5/graphene nanocomposites have been synthesized by a facile solvothermal approach. The V2O5 nanoparticles, around 20-40 nm in size, were encapsulated in the 2D graphene matrix. The reversible Li-cycling properties of V2O5/graphene have been evaluated by galvanostatic discharge-charge cycling, cyclic voltammetry, and impedance spectroscopy. Compared with the bare V2O5 nanoparticles, the V2O5/graphene nanocomposites exhibited enhanced electrochemical performance with higher reversible capacity and improved cycling stability and rate capability. The graphene nanosheets act not only as an electronically conductive matrix to improve the electronic and ionic conductivity of the composite electrode, but also as a flexible buffer matrix to maintain the structural integrity of the composite electrodes by preventing particle agglomeration, thus leading to the improvement of the electrochemical performance of V2O5.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 185, July 2014, Pages 7-12
نویسندگان
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