Các siêu vi tụ điện hai lớp điện hóa dựa trên SiNWs có cửa điện áp rộng (4V) và tính ổn định chu trình dài bằng việc sử dụng chất điện phân lỏng ion proton

• Ngôn ngữ: vie
• Ký hiệu phân loại: 621.35 Superconductivity
• Thông tin xuất bản: Nanoscience and nanotechnology, 2015
• Mô tả vật lý: 45297
• Bộ sưu tập: Metadata
• ID: 539421

Tóm tắt

 The present work reports the use and application of a novel protic ionic liquid (triethylammonium bis(trifluoromethylsulfonyl)imide
  NEt3H TFSI) as an electrolyte for symmetric planar micro-supercapacitors based on silicon nanowire electrodes. The excellent perfonnance of the device has been successfully demonstrated using cyclic voltammetry, galvanostatic charge-discharge cycles and electrochemical impedance spectroscopy. The electrochemical characterization of this system exhibits a wide operative voltage of 4V as well as an outstanding long cycling stability after milIions of galvanostatic cycles at a high current density of 2 mA cm -2. In addition, the electrochemical double layer micro-supercapacitor was able to deliver a high power density of 4 mW cm -2 in a very short time pulses (a few ms). The results could be of interest to develop prospective on-chip micro-supercapacitors using protic ionic liquids as electrolytes with high performance in terms of power and energy densities.