Mesoporous Vertical Co3O4 Nanosheet Arrays on Nitrogen-Doped Graphene Foam with Enhanced Charge-Storage Performance

被引：84

作者：

Zou, Yuqin ^{[1
]}

Kinloch, Ian A. ^{[2
]}

Dryfe, Robert A. W. ^{[1
]}

机构：

[1] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England

[2] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 41期

基金：

英国工程与自然科学研究理事会;

关键词：

cobalt oxide; hollow 3D structure; nitrogen-doped graphene foam; enhanced capacitive performance; charge storage; ELECTROCHEMICAL CAPACITORS; SUPERCAPACITOR ELECTRODES; THIN-FILM; NI FOAM; OXIDE; HYDROXIDE; NETWORKS; GROWTH; ENERGY; SENSOR;

D O I：

10.1021/acsami.5b05095

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A hierarchical electrode structure, consisting of cobalt oxide and nitrogen-doped graphene foam (NGF), has been fabricated with the aim of achieving enhanced charge-storage performance. Characterization of the material via electron microscopy and Raman spectroscopy demonstrates that the Co3O4 nanosheets grow vertically on NGF and the nanosheets are mesoporous with pore diameters between 3 and 8 rim. The Co3O4/NGF electrode shows an enhanced charge-storage performance, attributed to the 3D hierarchical structure and the synergistic effect of Co3O4 and NGF. The present study shows that specific capacitances as high as 451 F can be obtained, indicating that high-performance electrochemical capacitors can be made using electrode materials with be readily extended to other electroactive materials and their composites.

引用

页码：22831 / 22838

页数：8

共 41 条

[1]

[Anonymous], ADV ENERGY MAT

[2] Pseudocapacitive oxide materials for high-rate electrochemical energy storage [J].

Augustyn, Veronica ;

Simon, Patrice ;

Dunn, Bruce .

ENERGY & ENVIRONMENTAL SCIENCE, 2014, 7 (05) :1597-1614

[3] Resolving surface chemical states in XPS analysis of first row transition metals, oxides and hydroxides: Cr, Mn, Fe, Co and Ni [J].

Biesinger, Mark C. ;

Payne, Brad P. ;

Grosvenor, Andrew P. ;

Lau, Leo W. M. ;

Gerson, Andrea R. ;

Smart, Roger St. C. .

APPLIED SURFACE SCIENCE, 2011, 257 (07) :2717-2730

[4] ELECTROCHEMICAL SURFACE-PROPERTIES OF CO3O4 ELECTRODES [J].

BOGGIO, R ;

CARUGATI, A ;

TRASATTI, S .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1987, 17 (04) :828-840

[5] To Be or Not To Be Pseudocapacitive? [J].

Brousse, Thierry ;

Belanger, Daniel ;

Long, Jeffrey W. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2015, 162 (05) :A5185-A5189

[6] Three-dimensional graphene materials: preparation, structures and application in supercapacitors [J].

Cao, Xiehong ;

Yin, Zongyou ;

Zhang, Hua .

ENERGY & ENVIRONMENTAL SCIENCE, 2014, 7 (06) :1850-1865

[7]

Chen ZP, 2011, NAT MATER, V10, P424, DOI [10.1038/NMAT3001, 10.1038/nmat3001]

[8]

Conway B.E., 1999, ELECTROCHEM SUPERCAP, DOI DOI 10.1007/978-1-4757-3058-6

[9] 3D Graphene-Cobalt Oxide Electrode for High-Performance Supercapacitor and Enzymeless Glucose Detection [J].

Dong, Xiao-Chen ;

Xu, Hang ;

Wang, Xue-Wan ;

Huang, Yin-Xi ;

Chan-Park, Mary B. ;

Zhang, Hua ;

Wang, Lian-Hui ;

Huang, Wei ;

Chen, Peng .

ACS NANO, 2012, 6 (04) :3206-3213

[10] Preparation of CTAB-Assisted Hexagonal Platelet Co(OH)2/Graphene Hybrid Composite as Efficient Supercapacitor Electrode Material [J].

Ghosh, Debasis ;

Giri, Soumen ;

Das, Chapal Kumar .

ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2013, 1 (09) :1135-1142

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