کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6611119 | 459559 | 2015 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Facile synthesis of amorphous Ni(OH)2 for high-performance supercapacitors via electrochemical assembly in a reverse micelle
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The specific and unique amorphous nickel hydroxide nanostructures were synthesized via a simple and straightforward electrochemical way. By simply tuning the soft templates and applying a suitable current density, a specific and unique microstructure is obtained. The diameter of the Ni(OH)2 nano-sphere is greatly influenced by the current density, the sample obtained at 1 mA
- cmâ2 is about 200Â nm while the size of that assembled at 6 mA
- cmâ2 is less than 20Â nm. However, the Ni(OH)2 film prepared at the current density of 2 mA
- cmâ2 showed the best electrochemical performance for the highly porous surface morphology which contributed to the uniform morphology obtained at this current density. The maximum specific capacitance can be achieved as high as 1460F
- gâ1 in 2Â M NaOH at the scan rate of 2mV
- sâ1. Such impressive electrochemical properties can be ascribed to the highly porous microstructures and disorder of the amorphous phase which was considered for the better accommodation of repeated volume changes associated with doping-undoping process. The high specific capacitance and remarkable rate capability of amorphous transition metal oxides nanostructures show broad prospect for potential applications in energy conversion and storage devices.
- cmâ2 is about 200Â nm while the size of that assembled at 6 mA
- cmâ2 is less than 20Â nm. However, the Ni(OH)2 film prepared at the current density of 2 mA
- cmâ2 showed the best electrochemical performance for the highly porous surface morphology which contributed to the uniform morphology obtained at this current density. The maximum specific capacitance can be achieved as high as 1460F
- gâ1 in 2Â M NaOH at the scan rate of 2mV
- sâ1. Such impressive electrochemical properties can be ascribed to the highly porous microstructures and disorder of the amorphous phase which was considered for the better accommodation of repeated volume changes associated with doping-undoping process. The high specific capacitance and remarkable rate capability of amorphous transition metal oxides nanostructures show broad prospect for potential applications in energy conversion and storage devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 174, 20 August 2015, Pages 273-281
Journal: Electrochimica Acta - Volume 174, 20 August 2015, Pages 273-281
نویسندگان
Liwen Hu, Zhijing Yu, Zongqian Hu, Yang Song, Feng Zhang, Hongmin Zhu, Shuqiang Jiao,