کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1463847 989652 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-rate properties of LiFePO4/carbon composites as cathode materials for lithium-ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
High-rate properties of LiFePO4/carbon composites as cathode materials for lithium-ion batteries
چکیده انگلیسی

Electrochemical properties of LiFePO4/carbon composites were investigated to achieve a high-rate lithium electrode performance. LiFePO4/carbon composites were synthesized by a hydrothermal reaction of a solution of FeSO4·7H2O, H3PO4, and LiOH·H2O mixed with carbon powders under nitrogen atmosphere followed by annealing under 1% H2–99% Ar atmosphere. Particle size of the obtained LiFePO4/carbon composites observed by scanning electron microscopy was less than 100 nm. At a high current density of 1000 mA g−1, the LiFePO4/carbon composites showed a high discharge capacity of 113 mA h g−1, and a flat discharge potential plateau was observed around 3.4 V. The discharge capacity at the high current density, 85% of that at a low current density of 30 mA g−1, is a quite high value for LiFePO4 cathodes. Homogeneous microstructure consisting of small particles contributed to the high-rate properties of the LiFePO4/carbon composites.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 34, Issue 4, May 2008, Pages 863–866
نویسندگان
, , ,