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  Thermally Reduced Graphene Oxide Electrochemically Activated by Bis-Spiro Quaternary Alkyl Ammonium for Capacitors

He, T., Xiangling, M., Junping, N., Tong, Y., & Cai, K.-D. (2016). Thermally Reduced Graphene Oxide Electrochemically Activated by Bis-Spiro Quaternary Alkyl Ammonium for Capacitors. ACS Applied Materials and Interfaces, 8(22), 13865-13870. doi:10.1021/acsami.6b00885.

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 Urheber:
He, Tieshi1, 2, Autor
Xiangling, Meng1, Autor
Junping, Nie1, Autor
Tong, Yujin3, Autor           
Cai, Ke.-Di.1, 3, Autor           
Affiliations:
1Liaoning Engineering Technology Center of Supercapacitor, Bohai University, Jinzhou 121013, China, ou_persistent22              
2School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0295, United States, ou_persistent22              
3Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

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 Zusammenfassung: Thermally reduced graphene oxide (RGO) electrochemically activated by a quaternary alkyl ammonium-based organic electrolytes/activated carbon (AC) electrode asymmetric capacitor is proposed. The electrochemical activation process includes adsorption of anions into the pores of AC in the positive electrode and the interlayer intercalation of cations into RGO in the negative electrode under high potential (4.0 V). The EA process of RGO by quaternary alkyl ammonium was investigated by X-ray diffraction and electrochemical measurements, and the effects of cation size and structure were extensively evaluated. Intercalation by quaternary alkyl ammonium demonstrates a small degree of expansion of the whole crystal lattice (d002) and a large degree of expansion of the partial crystal lattice (d002) of RGO. RGO electrochemically activated by bis-spiro quaternary alkyl ammonium in propylene carbonate/AC asymmetric capacitor exhibits good activated efficiency, high specific capacity, and stable cyclability.

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 Datum: 2016-01-232016-05-162016-05-162016-06-08
 Publikationsstatus: Erschienen
 Seiten: 6
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/acsami.6b00885
 Art des Abschluß: -

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Titel: ACS Applied Materials and Interfaces
  Kurztitel : ACS Appl. Mater. Interfaces
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: 6 Band / Heft: 8 (22) Artikelnummer: - Start- / Endseite: 13865 - 13870 Identifikator: ISSN: 1944-8244
CoNE: https://pure.mpg.de/cone/journals/resource/1944-8244