کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1619810 1005725 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of electrochemical performances of LiFePO4 cathode materials by coating of polythiophene
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Improvement of electrochemical performances of LiFePO4 cathode materials by coating of polythiophene
چکیده انگلیسی

A series LiFePO4/polythiophene (LiFePO4/PTh) composites were synthesized by in situ polymerizing thiophene monomers on the surface of LiFePO4 particles. Electrochemical impedance spectra (EIS) measurements show that the coating of polythiophene significantly decreases the charge transfer resistance of LiFePO4 electrodes. Transmission electron microscopy (TEM) tests show that LiFePO4 could be completely coated by addition of proper amount of polythiophene. The electrochemical performance of polythiophene and LiFePO4/PTh for lithium insertion and extraction was examined by charge/discharge testing. The composites demonstrated an increased reversible capacity and better cycling ability compared to the bare LiFePO4.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 508, Issue 1, 15 October 2010, Pages 1–4
نویسندگان
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