کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5460113 | 1516170 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Controllable morphologies and electrochemical properties of graphitizing MCMB-based hybrids with nanostructure via a simple chemical vapor deposition method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The graphitizing mesocarbon microbeads (g-MCMB) based nanostructure hybrids are prepared by a simple chemical vapor deposition method. The growth temperature and the flow ratio of H2 to C2H2 (r) are the key parameters of controlling the morphologies of the hybrids. When r is 4, many CNTs mixed with carbon fibers grow on g-MCMB surfaces at 700 °C. However, there are almost no CNTs to be observed at 750 °C and 800 °C. In addition, the specific surface area of as-prepared hybrids is a little higher than that of g-MCMB, and the specific capacitance is much higher than the latter. The sample of g-MCMB-NS-4-700 exhibits the highest specific capacitance (303 F·gâ1 at the current density of 0.5 A gâ1), which is approximately 1.46 folds of g-MCMB. Moreover, the prepared hybrids have an excellent cycling stability and the specific capacitance retention is above 90% after 500 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 724, 15 November 2017, Pages 443-449
Journal: Journal of Alloys and Compounds - Volume 724, 15 November 2017, Pages 443-449
نویسندگان
Youliang Cheng, Qingling Zhang, Changqing Fang, Jing Chen, Shaohua Guo, Xinchuan Che,