Facile Synthesis of Three-Dimensional Sandwiched MnO2@GCs@MnO2 Hybrid   Nanostructured Electrode for Electrochemical Capacitors

doi:10.1021/acsami.7b04416

CORC > 北京大学 > 工学院

	Facile Synthesis of Three-Dimensional Sandwiched MnO2@GCs@MnO2 Hybrid Nanostructured Electrode for Electrochemical Capacitors
	Jian, Xian ; Liu, Shiyu ; Gao, Yuqi ; Zhang, Wanli ; He, Weidong ; Mahmood, Asif ; Subramaniyam, Chandrasekar M. ; Wang, Xiaolin ; Mahmood, Nasir ; Dou, Shi Xue
刊名	ACS APPLIED MATERIALS & INTERFACES
	2017
关键词	graphite-like capsules MnO2 catalytic chemical vapor deposition microwave synthesis electrochemical capacitors ENERGY DENSITY ASYMMETRIC SUPERCAPACITORS NANOFIBER ELECTRODES CATALYTIC-ACTIVITY RAMAN-SCATTERING HIGH-POWER PERFORMANCE GRAPHENE CARBON MNO2
DOI	10.1021/acsami.7b04416
英文摘要	Designable control over the morphology and structure of active materials is highly desirable for achieving high-performance devices.Here, we develop a facile microwave-assisted synthesis to decorate MnO2 nanocrystals on three-dimensional (3D) graphite-like capsules (GCs) to obtain sandwich nanostructures (3D MnO2@GCs@MnO2) as electrode materials for electrochemical capacitors(ECs). A templated growth of the 3D GCs was carried out via-catalytic chemical vapor deposition and MnO2 was decorated on the exterior and interior surfaces of the GC walls through microwave irradiation to build an engineered architecture with robust structural and morphological stability. The unique sandwiched architecture has a large interfacial surface area, and allows for rapid electrolyte diffusion through its hollow/open framework and fast electronic motion via the carbon backbone. Furthermore, the tough and rigid nature of GCs provides the necessary structural stability, and the strong synergy between MnO2 and GCs leads to high electrochemical activity in both neutral (265.1 F/g at 0.5 A/g) and alkaline (390 F/g at 0.5 A/g) electrolytes. The developed hybrid exhibits stable capacitance up to 6000 cycles in 1 M Na2SO4. The hybrid is a potential-Candidate for future ECs and the present study opens up,air effective-avenue to' design hybrid materials for various applications.; Fundamental Research Funds for the Chinese Central Universities [ZYGX2016J139]; Science & Technology Support Funds of Sichuan Province [2016GZ0151, 2016RZ0054]; China Postdoctoral Science Foundation [2015M582539]; National Natural Science Foundation of China [51402040]; National Hi-Tech Research and Development Program of China [2015AA034202]; Automotive CRC [1-108]; SCI(E); ARTICLE; 22; 18872-18882; 9
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/472863]
专题	工学院
推荐引用方式 GB/T 7714	Jian, Xian,Liu, Shiyu,Gao, Yuqi,et al. Facile Synthesis of Three-Dimensional Sandwiched MnO2@GCs@MnO2 Hybrid Nanostructured Electrode for Electrochemical Capacitors[J]. ACS APPLIED MATERIALS & INTERFACES,2017.
APA	Jian, Xian.,Liu, Shiyu.,Gao, Yuqi.,Zhang, Wanli.,He, Weidong.,...&Dou, Shi Xue.(2017).Facile Synthesis of Three-Dimensional Sandwiched MnO2@GCs@MnO2 Hybrid Nanostructured Electrode for Electrochemical Capacitors.ACS APPLIED MATERIALS & INTERFACES.
MLA	Jian, Xian,et al."Facile Synthesis of Three-Dimensional Sandwiched MnO2@GCs@MnO2 Hybrid Nanostructured Electrode for Electrochemical Capacitors".ACS APPLIED MATERIALS & INTERFACES (2017).