High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications
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2022
Authors
Milikić, JadrankaTapia, Andres
Stamenović, Una
Vodnik, Vesna
Otoničar, Mojca
Škapin, Srečo Davor
Santos, Diogo M. F.
Šljukić, Biljana
Article (Published version)
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Gold polypyrrole (AuPPy) and copper polypyrrole (CuPPy) nanocomposites were prepared by a simple one-step in situ oxidative polymerization of pyrrole monomer by Au3+ and Cu2+ ions. Owing to their characteristic physicochemical properties confirmed by optical and structural characterization methods, the behavior of these materials as electrocatalysts for borohydride oxidation reaction (BOR) was considered. BOR apparent activation energy was found to be 16 and 22 kJ mol−1 for AuPPy and CuPPy electrocatalyst, respectively. The stability of the two electrocatalysts was assessed by chronoamperometry. Moreover, fuel cell tests were carried out with AuPPy and CuPPy as anode electrocatalyst of a direct borohydride-peroxide fuel cell (DBPFC). Open circuit voltage (OCV) of 1.30 V was obtained with both AuPPy and CuPPy, with the OCV increasing to 1.45 V upon adding a small amount of carbon (AuPPy-C). The peak power density of a DBPFC with BOR at AuPPy-C anode and hydrogen peroxide reduction react...ion at Pt cathode was found to be ca. 162 mW cm−2 at 65 °C.
Keywords:
Borohydride oxidation reaction / Copper polypyrrole / Direct borohydride fuel cell / Gold polypyrrole / NanocompositesSource:
International Journal of Hydrogen Energy, 2022Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200146 (University of Belgrade, Faculty of Physical Chemistry) (RS-MESTD-inst-2020-200146)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča) (RS-MESTD-inst-2020-200017)
- Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) [contract no. IST-ID/156e2018]
- D.M.F. Santos [IDP/04540/2020]
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VinčaTY - JOUR AU - Milikić, Jadranka AU - Tapia, Andres AU - Stamenović, Una AU - Vodnik, Vesna AU - Otoničar, Mojca AU - Škapin, Srečo Davor AU - Santos, Diogo M. F. AU - Šljukić, Biljana PY - 2022 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10436 AB - Gold polypyrrole (AuPPy) and copper polypyrrole (CuPPy) nanocomposites were prepared by a simple one-step in situ oxidative polymerization of pyrrole monomer by Au3+ and Cu2+ ions. Owing to their characteristic physicochemical properties confirmed by optical and structural characterization methods, the behavior of these materials as electrocatalysts for borohydride oxidation reaction (BOR) was considered. BOR apparent activation energy was found to be 16 and 22 kJ mol−1 for AuPPy and CuPPy electrocatalyst, respectively. The stability of the two electrocatalysts was assessed by chronoamperometry. Moreover, fuel cell tests were carried out with AuPPy and CuPPy as anode electrocatalyst of a direct borohydride-peroxide fuel cell (DBPFC). Open circuit voltage (OCV) of 1.30 V was obtained with both AuPPy and CuPPy, with the OCV increasing to 1.45 V upon adding a small amount of carbon (AuPPy-C). The peak power density of a DBPFC with BOR at AuPPy-C anode and hydrogen peroxide reduction reaction at Pt cathode was found to be ca. 162 mW cm−2 at 65 °C. T2 - International Journal of Hydrogen Energy T1 - High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications DO - 10.1016/j.ijhydene.2022.08.229 ER -
@article{ author = "Milikić, Jadranka and Tapia, Andres and Stamenović, Una and Vodnik, Vesna and Otoničar, Mojca and Škapin, Srečo Davor and Santos, Diogo M. F. and Šljukić, Biljana", year = "2022", abstract = "Gold polypyrrole (AuPPy) and copper polypyrrole (CuPPy) nanocomposites were prepared by a simple one-step in situ oxidative polymerization of pyrrole monomer by Au3+ and Cu2+ ions. Owing to their characteristic physicochemical properties confirmed by optical and structural characterization methods, the behavior of these materials as electrocatalysts for borohydride oxidation reaction (BOR) was considered. BOR apparent activation energy was found to be 16 and 22 kJ mol−1 for AuPPy and CuPPy electrocatalyst, respectively. The stability of the two electrocatalysts was assessed by chronoamperometry. Moreover, fuel cell tests were carried out with AuPPy and CuPPy as anode electrocatalyst of a direct borohydride-peroxide fuel cell (DBPFC). Open circuit voltage (OCV) of 1.30 V was obtained with both AuPPy and CuPPy, with the OCV increasing to 1.45 V upon adding a small amount of carbon (AuPPy-C). The peak power density of a DBPFC with BOR at AuPPy-C anode and hydrogen peroxide reduction reaction at Pt cathode was found to be ca. 162 mW cm−2 at 65 °C.", journal = "International Journal of Hydrogen Energy", title = "High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications", doi = "10.1016/j.ijhydene.2022.08.229" }
Milikić, J., Tapia, A., Stamenović, U., Vodnik, V., Otoničar, M., Škapin, S. D., Santos, D. M. F.,& Šljukić, B.. (2022). High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications. in International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2022.08.229
Milikić J, Tapia A, Stamenović U, Vodnik V, Otoničar M, Škapin SD, Santos DMF, Šljukić B. High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications. in International Journal of Hydrogen Energy. 2022;. doi:10.1016/j.ijhydene.2022.08.229 .
Milikić, Jadranka, Tapia, Andres, Stamenović, Una, Vodnik, Vesna, Otoničar, Mojca, Škapin, Srečo Davor, Santos, Diogo M. F., Šljukić, Biljana, "High-performance metal (Au,Cu)–polypyrrole nanocomposites for electrochemical borohydride oxidation in fuel cell applications" in International Journal of Hydrogen Energy (2022), https://doi.org/10.1016/j.ijhydene.2022.08.229 . .