کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5476100 | 1521428 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Morphology controlled preparation of ZnCo2O4 nanostructures for asymmetric supercapacitor with ultrahigh energy density
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Porous ZnCo2O4 nanostructures with hexamethylenetetramine (HMT) as adscititious alkali are fabricated via a facile hydrothermal route and heat treatment process. The morphology of the materials can be easily tuned from nanowires to nanobelts by simple varying the hydrothermal temperature. Due to the superiority of the porous nanostructure and the convenient ion transport, the obtained ZnCo2O4 nanostructures are further applied as electrode materials for supercapacitors and exhibit noticeable pseudocapacitive performance with high specific capacitance of 776.2 F gâ1 at 1 A gâ1 and good cycle stability (84.3% capacity retention at 3 A gâ1). Moreover, a high-voltage asymmetric supercapacitor using the ZnCo2O4 as the anode assembled with the freeze-dried reduced graphene oxide (F-RGO) cathode displays superior electrochemical performance with an ultrahigh energy density (84.48 Wh kgâ1 at 0.4 kW kgâ1), which reveals a great promise for practical application in electrochemical devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 123, 15 March 2017, Pages 296-304
Journal: Energy - Volume 123, 15 March 2017, Pages 296-304
نویسندگان
Le Xu, Yan Zhao, Jiabiao Lian, Yuanguo Xu, Jian Bao, Jingxia Qiu, Li Xu, Hui Xu, Mingqing Hua, Huaming Li,