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Synthesis of CaCr2O4/carbon nanoplatelets from non-condensable pyrolysis gas of plastics for oxygen reduction reaction and charge storage

Veksha Andrei, Moo James Guo Sheng, Krikštolaitytė, Vida 1984-, Oh Wen Da, Udayanga W. D.Chanaka, Giannis Apostolos, Lisak Grzegorz

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URIhttp://purl.tuc.gr/dl/dias/E03F1AA3-E0E4-41C5-BA30-E3A74928B28F-
Αναγνωριστικόhttps://doi.org/10.1016/j.jelechem.2019.113368-
Αναγνωριστικόhttps://www.sciencedirect.com/science/article/pii/S1572665719306368-
Γλώσσαen-
Μέγεθος9 pagesen
ΤίτλοςSynthesis of CaCr2O4/carbon nanoplatelets from non-condensable pyrolysis gas of plastics for oxygen reduction reaction and charge storageen
ΔημιουργόςVeksha Andreien
ΔημιουργόςMoo James Guo Shengen
ΔημιουργόςKrikštolaitytė, Vida 1984-en
ΔημιουργόςOh Wen Daen
ΔημιουργόςUdayanga W. D.Chanakaen
ΔημιουργόςGiannis Apostolosen
ΔημιουργόςΓιαννης Αποστολοςel
ΔημιουργόςLisak Grzegorzen
ΕκδότηςElsevieren
ΠερίληψηAn integrated pyrolysis and chemical vapor deposition using CaCrO4 as a precursor were applied to convert mixed plastics into a nanocomposite comprising CaCr2O4 and carbon nanoplatelets (CaCr2O4/CNPs). During pyrolysis, plastics were decomposed into oil and non-condensable gas. While reacting with the precursor, non-condensable pyrolysis gas containing hydrocarbons and H2 played a dual role: (1) provided carbon for nanoplatelets growth and (2) facilitated reduction of Cr(VI) to Cr(III). Cyclic voltammetry demonstrated the synergistic effect of CaCr2O4 and CNPs on the heterogeneous electron transfer rate. The nanocomposite showed good performance as an electrocatalyst for oxygen reduction reaction increasing current density and reducing overpotential to −0.27 V vs Ag/Ag/KCl (sat.) at 0.06 mA cm−2. Furthermore, the nanocomposite exhibited a specific electrochemical capacitance as high as 60 F g−1 at 2 A g−1 and 67% stability over 3000 cycles, demonstrating the capability of electrode for fast charge/discharge, long cycling life and high reversibility.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2020-04-23-
Ημερομηνία Δημοσίευσης2019-
Θεματική ΚατηγορίαCarbon nanoplateletsen
Θεματική ΚατηγορίαChromium compositeen
Θεματική ΚατηγορίαElectrochemical capacitanceen
Θεματική ΚατηγορίαHeterogeneous electron transferen
Θεματική ΚατηγορίαOxygen reduction reactionen
Βιβλιογραφική ΑναφοράA. Veksha, J.G.S. Moo, V. Krikstolaityte, W.-D. Oh, W.D.C. Udayanga, A. Giannis and G. Lisak, "Synthesis of CaCr2O4/carbon nanoplatelets from non-condensable pyrolysis gas of plastics for oxygen reduction reaction and charge storage," J. Electroanal. Chem., vol. 849, Sept. 2019. doi: 10.1016/j.jelechem.2019.113368en

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