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Constructed Uninterrupted Charge-Transfer Pathways in Three-Dimensional Micro/Nanointerconnected Carbon-Based Electrodes for High Energy-Density Ultralight Flexible Supercapacitors
He, Yongmin1; Chen, Wanjun1; Zhou, Jinyuan1; Li, Xiaodong1; Tang, Pengyi2; Zhang, Zhenxing1; Fu, Jiecai1; Xie, Erqing1
2014-01-08
Source PublicationACS Applied Materials & Interfaces   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN1944-8244
Volume6Issue:1Pages:210-218
Abstract

A type of freestanding three-dimensional (3D) micro/nanointerconnected structure, with a conjunction of microsized 3D graphene networks, nanosized 3D carbon nanofiber (CNF) forests, and consequently loaded MnO2 nanosheets, has been designed as the electrodes of an ultralight flexible supercapacitor. The resulting 3D graphene/CNR/MnO2 composite networks exhibit remarkable flexibility and highly mechanical properties due to good and intimate contacts among them, without current collectors and binders. Simultaneously, this designed 3D micro/nanointerconnected structure can provide an uninterrupted double charges freeway network for both electron and electrolyte ion to minimize electron accumulation and ion-diffusing resistance, leading to an excellent electrochemical performance. The ultrahigh specific capacitance of 946 F/g from cyclic voltammetry (CV) (or 920 F/g from galvanostatic charging/discharging (GCD)) were obtained, which is superior to that of the present electrode materials based on 3D graphene/MnO2 hybrid structure (482 F/g). Furthermore, we have also investigated the superior electrochemical performances of an asymmetric supercapacitor device (weight of less than 12 mg/cm(2) and thickness of similar to 0.8 mm), showing a total capacitance of 0.33 F/cm(2) at a window voltage of 1.8 V and a maximum energy density of 53.4W h/kg for driving a digital clock for 42 min. These inspiring performances would make our designed supercapacitors become one of the most promising candidates for the future flexible and lightweight energy storage systems.

Keyword3d Micro/nanointerconnected Structure Uninterrupted Charges Transfer Pathways Flexible Ultralight Supercapacitors
Subject AreaScience & Technology - Other Topics ; Materials Science
PublisherAMER CHEMICAL SOC
DOI10.1021/am403760h
Publication PlaceWASHINGTON
URL查看原文
Indexed BySCI ; SCIE
Language英语
First Inst
Funding Project国家自然科学基金项目 ; 中央高校基本科研业务费专项资金
Project NumberNational Natural Science Foundation of China [61176058, 51202100] ; Fundamental Research Funds for the Central Universities [lzujbky-2013-231]
WOS IDWOS:000329586300030
Funding OrganizationNSFC ; LZU
SubtypeArticle
Original Document TypeJournal article
EI ID20140417218648
PMID 24325338
DepartmentLanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China;
Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Gansu, Peoples R China
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/103457
Collection物理科学与技术学院
化学化工学院
Corresponding AuthorHe, Yongmin
Affiliation
1.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China
2.Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Gansu, Peoples R China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
First Signature AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
He, Yongmin,Chen, Wanjun,Zhou, Jinyuan,et al. Constructed Uninterrupted Charge-Transfer Pathways in Three-Dimensional Micro/Nanointerconnected Carbon-Based Electrodes for High Energy-Density Ultralight Flexible Supercapacitors[J]. ACS Applied Materials & Interfaces,2014,6(1):210-218.
APA He, Yongmin.,Chen, Wanjun.,Zhou, Jinyuan.,Li, Xiaodong.,Tang, Pengyi.,...&Xie, Erqing.(2014).Constructed Uninterrupted Charge-Transfer Pathways in Three-Dimensional Micro/Nanointerconnected Carbon-Based Electrodes for High Energy-Density Ultralight Flexible Supercapacitors.ACS Applied Materials & Interfaces,6(1),210-218.
MLA He, Yongmin,et al."Constructed Uninterrupted Charge-Transfer Pathways in Three-Dimensional Micro/Nanointerconnected Carbon-Based Electrodes for High Energy-Density Ultralight Flexible Supercapacitors".ACS Applied Materials & Interfaces 6.1(2014):210-218.
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