Electrochemical performance enhancement of high mass loading H-RuO 2 NPs electrode and aqueous symmetrical supercapacitor in the neutral electrolyte
Journal of Energy Storage, ISSN: 2352-152X, Vol: 30, Page: 101453
2020
- 23Citations
- 15Captures
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Article Description
In this work, high water content hydrous ruthenium oxide nanoparticles (H-RuO 2 NPs) were synthesized using gallic acid monohydrate as a reducing agent. X-ray diffraction and transmission electron microscopy results confirmed the formation of irregular shape H-RuO 2 NPs with an average size of 5 nm. The thermogravimetric study showed that the synthesized H-RuO 2 NPs content more than 70 % of water which makes it specifically suitable for the electrochemical application. Moreover, it was observed that increasing the mass loading of synthesized H-RuO 2 NPs from 0.5 mg cm −2 to 8 mg cm −2, the specific capacitance decreased from 676 to 217 Fg −1 at a scan rate of 5 mVs −1 in 1 M Na 2 SO 4 electrolyte. Furthermore, the aqueous symmetrical supercapacitor with a total mass loading of 16 mg cm −2 exhibited a specific capacitance of 62 Fg −1 at a scan rate of 1 mVs −1 and the specific capacitance retention rate of 91.4 % was observed after 5000 cycles at a current density of 5 Ag −1.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2352152X19318328; http://dx.doi.org/10.1016/j.est.2020.101453; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85083822201&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2352152X19318328; https://dx.doi.org/10.1016/j.est.2020.101453
Elsevier BV
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