کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6579868 | 1422935 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of copper-cobalt hybrid oxide microflowers as electrode material for supercapacitors
ترجمه فارسی عنوان
سنتز میکروآلیاف اکسید هیبرید مس-کبالت به عنوان ماده الکترود برای ابررایانه ها
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کلمات کلیدی
رشد انجماد، اکسید هیبرید مس-کبالت، میکروفلور، ابرخازنها،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Copper-cobalt hybrid oxide (CuCoO-H) microflowers were prepared by a cost-effective and facile two-step growth-annealing approach toward supercapacitor electrode materials. The unique architecture obtained by adjusting the calcination atmosphere, ultrathin nanosheets with small nanocrystallites providing high specific surface area and appropriate mesoporous structure enhancing electrolyte penetration, as well as synergistic effect among CuCo2O4, Cu2O and CoO makes the CuCoO-H display excellent electrochemical performances, showing the advantages of novel hybrid strategy, which shed new light on searching cheap and efficient electrode materials for supercapacitors. The CuCoO-H electrodes showed outstanding electrochemical stability, after 10,000 cycles of measurements at a current density of 3â¯Aâ¯gâ1, retaining 99.4% of the initial specific capacitances and impressive high-rate capability (405.36â¯Fâ¯gâ1 at 20â¯Aâ¯gâ1). Furthermore, the CuCoO-H as the positive electrode and active carbon as the negative electrode constitute an asymmetric supercapacitor, exhibiting a high energy density of 32.2â¯Wâ¯hâ¯kgâ1 at the power density of 644â¯Wâ¯kgâ1. At last, two asymmetric supercapacitors were assembled in series to light a red commercial light-emitting diodes (LEDs) for the practical application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 343, 1 July 2018, Pages 331-339
Journal: Chemical Engineering Journal - Volume 343, 1 July 2018, Pages 331-339
نویسندگان
Cen Jin, Yingxue Cui, Guofeng Zhang, Wenhao Luo, Yanxia Liu, Yan Sun, Zhangmin Tian, Wenjun Zheng,