کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1548022 1398506 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Double carbon decorated lithium titanate as anode material with high rate performance for lithium-ion batteries
ترجمه فارسی عنوان
تیتانات لیتیوم با دو کربن به عنوان مواد آند با عملکرد بالا برای باتری های لیتیوم یون
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی

Spinel lithium titanate (Li4Ti5O12) has the advantages of structural stability, however it suffers the disadvantages of low lithium-ion diffusion coefficient as well as low conductivity. In order to solve issues, we reported a simple method to prepare carbon-coated Li4Ti5O12/CNTs (C@Li4Ti5O12/CNTs) using stearic acid as surfactant and carbon source to prepare carbon coated nanosized particles. The obtained Li4Ti5O12 particles of 100 nm in size are coated with the carbon layers pyrolyzed from stearic acid and dispersed in CNTs matrix homogeneously. These results show that the synthesized C@Li4Ti5O12/CNTs material used as anode materials for lithium ion batteries, presenting a better high-rate performance (147 mA h g−1 at 20 C). The key factors affecting the high-rate properties of the C@Li4Ti5O12/CNTs composite may be related to the synergistic effects of the CNTs matrix and the carbon- coating layers with conductivity enhancement. Additionally, the amorphous carbon coating is an effective route to ameliorate the rate capability of Li4Ti5O12/CNTs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Natural Science: Materials International - Volume 26, Issue 3, June 2016, Pages 283–288
نویسندگان
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