期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 197, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2020.108263
关键词
Polypyrrole; Molybdenum disulfide; Interface guide; Flexible electrode; Supercapacitor
资金
- National Natural Science Foundation of China [51672174, 51779139, 51772190]
- Material Genome Initiative Project Foundation of Science and Technology Commission of Shanghai Municipality [16DZ2260602]
- Advanced Energy Material and Technology Center of Shanghai Jiao Tong University
Self-standing film with desirable properties is a promising candidate for flexible electronic applications. Conducting polymers (CP) have intrinsic film forming and pseudocapacitive characteristics. However, pure CP films are rarely applied in energy storage devices due to their disordered molecular structure which would result in insufficient utilization of the supported active materials and apparent volumetric effect. The specific lamellar structure of 2D nanosheets is an ideal platform for CP growing into self-standing film with desirable structure. Herein, a facile interface engineering strategy is proposed for in-situ integrating 2D MoS2 nanosheets into 3D polypyrrole (PPy) framework, in which dodecylbenzene sulfonate (DBS-) anions intercalate into MoS2 nano sheets and guide PPy to grow into ordered molecular structure. The resultant self-standing films with PPy chains in a high degree of ordering can deliver a high area capacitance of 1200 mF/cm(2) and a high volumetric capacitance of 325 F/cm(3), which are significantly superior to pure PPy films and show a great potential for high performance flexible supercapacitor application.
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