کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4766590 | 1423983 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Hydrophilic PVP brushes were grafted on the surface of OMCs by SI-eATRP.
- The grafted PVP brushes can effectively enhance the wettability of OMCs surface.
- The OMCs-PVP electrode has a high specific capacitance of 253 F gâ 1 at 0.5 A gâ 1.
- The OMCs-PVP electrode yields a superior rate capability and long-term stability.
Ordered mesoporous carbons (OMCs) grafted with poly(N-vinylpyrrolidone) (PVP) was prepared through electrochemically induced surface-initiated atom-transfer radical polymerization (SI-eATRP). The introduction of hydrophilic polymer PVP brushes on the surface of OMCs results in the improvement of wettability and a remarkable increase in the specific capacitance. The results of electrochemical performance of OMCs-PVP show good specific capacitance of 253 F gâ 1, excellent rate performance and good cycling stability with capacitance retention of 89.6% over 5000 cycles. The PVP modification of OMCs via the SI-eATRP method demonstrates an effective way to improve the wettability and electrochemical properties.
85
Journal: Electrochemistry Communications - Volume 74, January 2017, Pages 19-23