CeO2 nanorod decorated NrGO additives for boosting PEMFC performance

Taşdemir, Adnan and Iskandarani, Bilal and Yürüm, Alp and Alkan Gürsel, Selmiye and Yarar Kaplan, Begüm (2021) CeO2 nanorod decorated NrGO additives for boosting PEMFC performance. International Journal of Hydrogen Energy, 46 (63). pp. 32250-32260. ISSN 0360-3199 (Print) 1879-3487 (Online)

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This study presents a novel and highly efficient CeO2-based type of additives to improve the performance of PEM fuel cells. Cerium(IV) oxide (CeO2) nanorods and CeO2 nanorod decorated nitrogen-doped reduced graphene oxide (NrGO) (CeO2/NrGO) were synthesized and utilized to enhance the ORR performance of PEMFCs. With a low energy transition between Ce+3 to Ce+4 and its high catalytic activity, CeO2 could promote O2 reduction. The structural properties of CeO2 nanorods and the CeO2/NrGO composite were investigated using XRD, RAMAN, SEM, TEM, TGA, BET, and XPS. The synthesized CeO2 nanorods and CeO2/NrGO composite were mixed with a low platinum loading (0.09−1), and ex-situ electrochemical characterizations were performed (CV and LSV) to evaluate their catalytic activities. Fuel cell performance tests and in-situ impedance analyses were also conducted to confirm the electrochemical results. Compared to commercial Pt/C-based MEA (269−2), the addition of both CeO2 nanorods (382−2) and CeO2/NrGO (389−2) to the catalyst layer showed a significant enhancement in fuel cell performance, due to the unique oxygen buffer ability of the synthesized additives.
Item Type: Article
Uncontrolled Keywords: Cerium oxide nanorods; Nitrogen-doped reduced graphene oxide; Oxygen reduction; PEM fuel Cells
Divisions: Faculty of Engineering and Natural Sciences
Sabancı University Nanotechnology Research and Application Center
Depositing User: Selmiye Alkan Gürsel
Date Deposited: 30 Aug 2022 14:24
Last Modified: 30 Aug 2022 14:24

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