期刊
MATERIALS LETTERS
卷 244, 期 -, 页码 27-30出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.02.064
关键词
Energy storage and conversion; Electrodeposition; Supercapacitor; Biomimetic; Polypyrrole
资金
- National Natural Science Foundations of China [51873083]
- Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) [sklpme2018-4-27]
- Six Talent Peaks Project in Jiangsu Province [2015-XCL-028]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX17_1831, SJCX18_0759]
In this work, we have put forward a novel heterogeneous interface induced formation strategy to prepare balsam pear-like polypyrrole (PPy) film by using binary electrodeposition. The as-prepared PPy film exhibited a balsam pear-like structure with plenty of vertically aligned serrations and offered a longer conjugation length of PPy chains. Beneficial from the reasonable structure, the serrated PPy (SE-PPy) provided abundant electro-active contact area with the electrolyte, thus leading to the ultrafast-spreading of electrolyte ions and high utilization efficiency of active electrode. Based on this, the SE-PPy electrode showed outstanding electrochemical performance with a large specific capacitance of 773.6 F/g at 1 A/g in 1 M KOH electrolyte, and still retains similar to 77.6% of its initial capacitance at a high current density of 20 A/g, which is superior to the reported PPy and most of PPy-related electrodes. (C) 2019 Elsevier B.V. All rights reserved.
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