Northwest Normal University Institutional Repository （NWNU_IR）
| Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix | |
Chen, Yan-Li; Hu, Zhong-Ai  ; Chang, Yan-Qin; Wang, Huan-Wen; Zhang, Zi-Yu; Yang, Yu-Ying; Wu, Hong-Ying
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| 2011-02-10 | |
| Source Publication | Journal of Physical Chemistry C
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| ISSN | 1932-7447 |
| Volume | 115Issue:5Pages:2563-2571 |
| Abstract | ZnO/reduced graphite oxide composites were synthesized using a two-step method in which KOH reacts with Zn(NO3)2 in the aqueous dispersions of graphite oxide (GO) to form a Zn(OH)2/graphite oxide precursor, followed by thermal treatment in air. It was found that the dispersion of reduced graphene oxide (rGO) sheets within composites was key for achieving an excellent capacitive performance of the samples. However, the mass ratio of ZnO to rGO determined whether rGO sheets within composites were dispersed or agglomerated. The composite achieved homogeneous incorporation of rGO sheets within the ZnO matrix when the mass ratio of ZnO to rGO was equal to 93.3:6.7. This composite, in which the weight percent of rGO was only 6.7%, appeared in the SEM images to be almost entirely filled with rGO sheets coated by ZnO and exhibited high specific capacitance and excellent cycling ability. Furthermore, the sheets overlapped to form a three-dimensional network structure, through which electrolyte ions easily access the surface of the rGO or electrochemical active sites. The homogeneously incorporated rGO sheets were shown to provide 128% enhancement in specific capacitance compared with 135 F g-1 for pure zinc oxide samples. Also, the unexpected phenomena involved in the experimental processes are discussed in detail. © 2011 American Chemical Society. |
| Keyword | Aqueous dispersions Capacitive performance Electrochemical capacitance High specific capacitances Reduced graphene oxides Reduced graphene oxides (RGO) Specific capacitance Three dimensional network structure |
| DOI | 10.1021/jp109597n |
| Indexed By | EI ; SCIE |
| Language | 英语 |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000286868600150 |
| Publisher | American Chemical Society |
| EI Accession Number | 20111213760033 |
| EI Keywords | Capacitance - Dispersions - Electrolytes - Graphene oxide - Graphite - II-VI semiconductors - Potassium hydroxide |
| EI Classification Number | 701.1 Electricity: Basic Concepts and Phenomena ; 702 Electric Batteries and Fuel Cells ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 951 Materials Science |
| Original Document Type | Journal article (JA) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.nwnu.edu.cn/handle/39RV6HYL/29995 |
| Collection | 实体学院_化学化工学院 实体学院_化学化工学院_化工系 |
| Corresponding Author | Hu, Zhong-Ai |
| Affiliation | NW Normal Univ, Key Lab Ecoenvironm Related Polymer Mat, Coll Chem & Chem Engn, Key Lab Polymer Mat Gansu Prov,Minist Educ, Lanzhou 730070, Peoples R China |
| First Author Affilication | 化工系 |
| Corresponding Author Affilication | 化工系 |
| First Signature Affilication | 化工系 |
| Recommended Citation GB/T 7714 | Chen, Yan-Li,Hu, Zhong-Ai,Chang, Yan-Qin,et al. Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix[J]. Journal of Physical Chemistry C,2011,115(5):2563-2571. |
| APA | Chen, Yan-Li.,Hu, Zhong-Ai.,Chang, Yan-Qin.,Wang, Huan-Wen.,Zhang, Zi-Yu.,...&Wu, Hong-Ying.(2011).Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix.Journal of Physical Chemistry C,115(5),2563-2571. |
| MLA | Chen, Yan-Li,et al."Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix".Journal of Physical Chemistry C 115.5(2011):2563-2571. |
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| Chen-2011-Zinc Oxide（2419KB） | 期刊论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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