کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
188807 459667 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical behaviors of porous SnO2–Sn/C composites derived from pyrolysis of SnO2/poly(vinylidene fluoride)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrochemical behaviors of porous SnO2–Sn/C composites derived from pyrolysis of SnO2/poly(vinylidene fluoride)
چکیده انگلیسی

Porous SnO2–Sn/C composites have been synthesized via directly pyrolysis of mixtures of SnO2 powder and poly(vinylidene fluoride) without any surfactant addition and other treatment. The composites are composed of SnO2 and Sn nanoparticles which are well encapsulated in porous carbon matrix as characterized by transmission electron microscopy, X-ray powder diffraction and micro-Raman spectrometer. The obtained materials were used as anode for lithium ion batteries, a discharge capacity of 1171 mAh g−1 and a charge capacity of 611 mAh g−1 were shown in the first cycle at a current density of 100 mA g−1, and good cycling performance achieved even at current density as high as 800 mA g−1. The good electrochemical behaviors could be attributed to the formation of Sn nanoparticles which can increase the reversible capacity and the porous carbon matrix which is of excellent buffering effect and high electronic conductivity.


► Porous SnO2–Sn/C composites were synthesized via pyrolysis of SnO2/poly(vinylidene fluoride).
► SnO2/Sn nanoparticles are encapsulated well in porous carbon matrix.
► The SnO2–Sn/C composites have good electrochemical performances even at high current densities.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 66, 1 April 2012, Pages 204–209
نویسندگان
, , , , , , , ,