کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
186711 | 459621 | 2014 | 5 صفحه PDF | دانلود رایگان |
• Growing silicon nanowires in porous alumina enables to increase their density.
• Electrode capacitance is increased thanks to the SiNWs growth in alumina template.
• SiNWs/SiNWs micro-supercapacitors have a promising stability in ionic liquid.
The use of nanoporous anodic alumina as a template for silicon nanowire growth enables the production of ultra dense nanowire arrays with density up to 8.109 cm−2. The integration of such nanowire arrays in micro-supercapacitor electrodes significantly improves the electrode capacitance per planar surface area and nanowires length unit compared to electrodes made from silicon nanowires grown from gold colloids (from 5.2 μF.cm−2.μm to 36.7 μF.cm−2.μm). Micro-supercapacitors with such electrodes and ionic liquid as electrolyte have a very promising cycling stability featuring less than 1% of losses after 300 000 cycles.
Journal: Electrochimica Acta - Volume 117, 20 January 2014, Pages 159–163