Synergistic effect of boron/nitrogen co-doping into graphene and intercalation of carbon black for Pt-BCN-Gr/CB hybrid catalyst on cell performance of polymer electrolyte membrane fuel cell
- Authors
- Lee, Wi Hyoung; Yang, Hee Na; Park, Kun-Woo; Choi, Beom Seok; Yi, Sung Chul; Kim, Wha Jung
- Issue Date
- Feb-2016
- Publisher
- Pergamon Press Ltd.
- Keywords
- Boron-nitrogen co-doping; Graphene; Intercalation; Cell performance; Durability
- Citation
- Energy, v.96, pp.314 - 324
- Indexed
- SCIE
SCOPUS
- Journal Title
- Energy
- Volume
- 96
- Start Page
- 314
- End Page
- 324
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/155179
- DOI
- 10.1016/j.energy.2015.12.088
- ISSN
- 0360-5442
- Abstract
- Boron and nitrogen were successfully co-doped into graphene (Gr) nanosheets to which Pt nanoparticles with similar to 3.7 nm are uniformly deposited on BCN-Gr. Pt content on BCN-Gr is estimated to be 50 wt.% by TG/DTA analysis. Pt-BCN-Gr is intercalated by different amount of CB (carbon black), and it is designated as Pt-BCN-Gr/CBx (x = 0.0, 03, 0.4, 0.5 and 0.6). The membrane electrode assembly is fabricated with commercial Pt-C and Pt-BCN-Gr/CBx as anode and cathode catalysts, respectively. The cell performance is highly consistent with electrochemical active surface area and the best cell performance of 0.54 W/cm(2) in power density is achieved for Pt-BCN-Gr/CB0.5. The results show that positive effect of B and N co-doping on cell performance becomes more significant for lower intercalated CB content. Direct comparison between Pt-BCN-Gr/CB and Pt-Gr/CB clearly exhibits that Pt-BCN-Gr/CB shows better cell performance for Pt-BCN-Gr/CB than Pt-Gr/CB at lower CB content. About 28%-157% in cell performance at 0.6 V has been enhanced by B and N co-doping compared with that of Pt-Gr/CB. The enhancement in cell performance and durability is probably attributed to the synergistic effect by B and N co-doping and intercalation by CB.
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