کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
180137 459371 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Porous nanostructured V2O5 film electrode with excellent Li-ion intercalation properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Porous nanostructured V2O5 film electrode with excellent Li-ion intercalation properties
چکیده انگلیسی

Porous nanostructured V2O5 films were prepared by electrodeposition from V2O5 sol with the addition of block copolymer Pluoronic P123, and they can be readily applied as Li-ion battery cathode without adding any polymer binder or conductive additives. SEM images showed an ideal morphology for Li+ intercalation favored charge transfer kinetics, which is a combination of homogeneously distributed nano-pores and V2O5 nanoparticles. Electrochemical measurements revealed that, the porous nanostructured V2O5 films have a high discharge capacity of 160 mAh/g at 9 A/g, and maintain 240 mAh/g after 40 cycles at 300 mA/g. The excellent Li+ intercalation property could be ascribed to the high surface area, sufficient contact between electrode materials and electrolyte, short Li+ diffusion path, as well as the good accommodation for volume change which are benefited from homogeneously distributed nano-pores and V2O5 nanoparticles.


► Porous nanostructured V2O5 films were fabricated by electrodeposition method.
► The addition of block copolymer P123 promotes the formation of porous structure.
► Porous V2O5 films combine homogeneous nanopores and nanoparticles in microstructure.
► They possess higher energy density and power density compared to folded films.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 13, Issue 11, November 2011, Pages 1276–1279
نویسندگان
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