Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7833117 | Applied Surface Science | 2018 | 9 Pages |
Abstract
The interface modification of collector/active materials is important for enhancing the performance of micro-supercapacitors (MSCs). In this study, we report that the performance of MnO2 based MSCs is greatly improved only by adding a small amount of Pt modification on Au current collector. The MSCs were fabricated in the interdigitated planar form on polyethylene terephthalate (PET) substrate. LiCl-polyvinyl alcohol (PVA) was used as solid electrolyte to make these all-solid-state flexible MSCs. The area specific capacitance of Pt modified MnO2/Pt@Au/PET MSCs are more than two times higher than those of MnO2/Au/PET MSCs without Pt modification. MnO2/Pt@Au MSCs has relatively higher energy density ranges from 0.36 to 0.88â¯Î¼Whâ¯cmâ2 and power density ranges from 0.04 to 0.16â¯mWâ¯cmâ2. In addition, the MnO2/Pt@Au/PET MSCs showed excellent long-term cycling stability with nearly no performance attenuation after 5000 times of galvanostatic charge/discharge cycles. Our results indicate that the interface modification of collector/active materials should receive sufficient attention to optimize and improve the storage performance and stability for MSCs.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Shengying Tao, Zhigang Zeng, Xiaobo Shi, Chujian Liao, Erjuan Guo, Xiao Long, Haijun Zhou, Xiaohong Wang, Dongmei Deng, Ye Dai,