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DOI	10.1039/c7ee02018j
	Degradation-induced capacitance: A new insight into the superior capacitive performance of polyaniline/graphene composites
	Zhang Q.; Zhou A.; Wang J.; Wu J.; Bai H.
发表日期	2017
ISSN	17545692
起始页码	2372
结束页码	2382
卷号	10 期号:11
英文摘要	Polyaniline/graphene (PANI/graphene) composites are the most investigated electrode materials for supercapacitors, owing to their high specific capacitance and excellent rate performance. However, a specific capacitance larger than the theoretical limit of the composite has been frequently reported for PANI/graphene composites, and the reason for this over-high capacitance has not been understood. In this work, after systematically investigating the evolution of the electrochemical and spectral properties of PANI/graphene, we prove that the hydroxyl- or amino-terminated oligoanilines generated from degradation of PANI possess a large specific capacitance (>1000 F g-1), and they significantly increase the total specific capacitance of the composite electrode. Graphene in the composite serves as a conductive matrix for electron transport between the low-conductivity hydroxyl or amino-terminated oligoanilines and the current collector. Based on the above results, we put forward a suggestion for simultaneously improving the specific capacitance and cycling stability of the PANI/graphene composites. A PANI/reduced graphene oxide composite material with a specific capacitance of 719 F g-1 at 1.4 A g-1 and 91.3% capacitance retention after 10000 cycles is obtained. © The Royal Society of Chemistry 2017.
英文关键词	Electrochemical electrodes; Electrodes; Electron transport properties; Graphene; Polyaniline; Capacitance retention; Capacitive performance; Composite electrode; Electrode material; High specific capacitances; Specific capacitance; Spectral properties; Theoretical limits; Capacitance; chemical compound; composite; degradation; electrochemical method; electrode; electron; equipment; performance assessment; polymer
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190376
作者单位	College of Materials, Xiamen University, Xiamen, 361005, China; Graphene Industry and Engineering Research Institute, Xiamen University361005, China
推荐引用方式 GB/T 7714	Zhang Q.,Zhou A.,Wang J.,et al. Degradation-induced capacitance: A new insight into the superior capacitive performance of polyaniline/graphene composites[J],2017,10(11).
APA	Zhang Q.,Zhou A.,Wang J.,Wu J.,&Bai H..(2017).Degradation-induced capacitance: A new insight into the superior capacitive performance of polyaniline/graphene composites.Energy & Environmental Science,10(11).
MLA	Zhang Q.,et al."Degradation-induced capacitance: A new insight into the superior capacitive performance of polyaniline/graphene composites".Energy & Environmental Science 10.11(2017).