Abstract
A binder-free nanocomposite consisting of ZnO nanoparticles (NPs) grown directly on graphene sheets by electrospraying was fabricated for use as an electrode material in supercapacitors. The optimal concentrations of graphene and ZnO NPs were determined from the capacitive characteristics of the composite. Scanning electron microscopy confirmed that the ZnO NPs grew in a uniformly distributed manner on the graphene sheets and that they exhibited negligible agglomeration. Further, X-ray diffraction analysis confirmed that ZnO growth was preferentially oriented along (100) plane in the ZnO/graphene composite. A symmetric supercapacitor fabricated using this composite exhibited an energy density of 67 mWh·cm−3 and power density of 6000 mW·cm−3. The composite also showed good long-term cycling performance, retaining 90% of its capacitance after 1000 galvanostatic charge/discharge cycles.
| Original language | English |
|---|---|
| Pages (from-to) | 781-791 |
| Number of pages | 11 |
| Journal | Journal of Alloys and Compounds |
| Volume | 741 |
| DOIs | |
| Publication status | Published - 2018 Apr 15 |
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ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Cite this
Electrosprayed graphene decorated with ZnO nanoparticles for supercapacitors. / Samuel, Edmund; Londhe, Priyanka U.; Joshi, Bhavana; Kim, Min Woo; Kim, Karam; Swihart, Mark T.; Chaure, Nandu B.; Yoon, Suk Goo.
In: Journal of Alloys and Compounds, Vol. 741, 15.04.2018, p. 781-791.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrosprayed graphene decorated with ZnO nanoparticles for supercapacitors
AU - Samuel, Edmund
AU - Londhe, Priyanka U.
AU - Joshi, Bhavana
AU - Kim, Min Woo
AU - Kim, Karam
AU - Swihart, Mark T.
AU - Chaure, Nandu B.
AU - Yoon, Suk Goo
PY - 2018/4/15
Y1 - 2018/4/15
N2 - A binder-free nanocomposite consisting of ZnO nanoparticles (NPs) grown directly on graphene sheets by electrospraying was fabricated for use as an electrode material in supercapacitors. The optimal concentrations of graphene and ZnO NPs were determined from the capacitive characteristics of the composite. Scanning electron microscopy confirmed that the ZnO NPs grew in a uniformly distributed manner on the graphene sheets and that they exhibited negligible agglomeration. Further, X-ray diffraction analysis confirmed that ZnO growth was preferentially oriented along (100) plane in the ZnO/graphene composite. A symmetric supercapacitor fabricated using this composite exhibited an energy density of 67 mWh·cm−3 and power density of 6000 mW·cm−3. The composite also showed good long-term cycling performance, retaining 90% of its capacitance after 1000 galvanostatic charge/discharge cycles.
AB - A binder-free nanocomposite consisting of ZnO nanoparticles (NPs) grown directly on graphene sheets by electrospraying was fabricated for use as an electrode material in supercapacitors. The optimal concentrations of graphene and ZnO NPs were determined from the capacitive characteristics of the composite. Scanning electron microscopy confirmed that the ZnO NPs grew in a uniformly distributed manner on the graphene sheets and that they exhibited negligible agglomeration. Further, X-ray diffraction analysis confirmed that ZnO growth was preferentially oriented along (100) plane in the ZnO/graphene composite. A symmetric supercapacitor fabricated using this composite exhibited an energy density of 67 mWh·cm−3 and power density of 6000 mW·cm−3. The composite also showed good long-term cycling performance, retaining 90% of its capacitance after 1000 galvanostatic charge/discharge cycles.
UR - http://www.scopus.com/inward/record.url?scp=85042006988&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85042006988&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2017.12.320
DO - 10.1016/j.jallcom.2017.12.320
M3 - Article
AN - SCOPUS:85042006988
VL - 741
SP - 781
EP - 791
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
ER -