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Journals / Bor Dergisi / 2019 / Cilt: 4 - Sayı: 3

Production of boron-dopped CVD graphene and fuel cell performance

Bor doplu CVD grafen üretimi ve yakıt pili performansı

Mehmet Suha YAZICI
Fatma Gül Boyacı SAN
Pages
141–147
Publication Date
2019-09-30
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Boron based reduction of catalysts, compare to other approaches, have resulted 3 times higher current density reaching 3000 mA/cm2 with PtCo/B/graphene catalyst in fuel cell testing.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Graphene, produced by chemical vapor deposition (CVD) and modified with boron (B), cobalt (Co) and nitrogen (N), was investigated as electrocatalyst and support material for proton exchange membrane (PEM) fuel cells.
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Key Findings & Data:Ammonia borane (H3N-BH3) was used directly as doping agent while sodium borohydride (NaBH4) was used indirectly.
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Conclusion & Impact:Boron based reduction of catalysts, compare to other approaches, have resulted 3 times higher current density reaching 3000 mA/cm2 with PtCo/B/graphene catalyst in fuel cell testing.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Bor doplama · CVD grafen · Yakıt pili

Abstract

Graphene, produced by chemical vapor deposition (CVD) and modified with boron (B), cobalt (Co) and nitrogen (N), was investigated as electrocatalyst and support material for proton exchange membrane (PEM) fuel cells. Ammonia borane (H3N-BH3) was used directly as doping agent while sodium borohydride (NaBH4) was used indirectly. Samples were characterized, in addition to electrochemical methods, by scanning electron microscopy (SEM), X-ray photo-electron microscopy (XPS), Raman spectroscopy and XRD. While rotating disc electrodes (RDE) were used to characterize oxygen reduction reaction capacity of graphene electrodes, fuel cell testing was carried out with 5-cm2 active area single cell. Boron based reduction of catalysts, compare to other approaches, have resulted 3 times higher current density reaching 3000 mA/cm2 with PtCo/B/graphene catalyst in fuel cell testing.

Özet

Kimyasal Buhar Biriktirme (CVD) yöntemiyle üretilen grafen yapıların bor (B), kobalt (Co)-azot (N)- katkı maddeleri ile Proton Elektrolit Membran (PEM) yakıt pillerinde elektrokatalizör veya destek malzemesi olarak kullanılabilirliği incelenmiştir. Bor doplamada amonyum boran (H3N-BH3) doğrudan kullanılırken sodyum borhidrür (NaBH4) dolaylı olarak kullanılmıştır. Üretilen örnekler elektrokimyasal yöntemler yanında Taramalı Elektron Mikroskobu (SEM), Geçirimli Elektron Mikroskobu (TEM), X-ışını Fotoelektron Spektroskopisi (XPS), Raman ve XRD yöntemleri ile de tanımlanmıştır. Grafen örneklerin elektrokimyasal oksijen indirgeme reaksiyon (ORR) ölçümleri döner disk elektrot (RDE) yönetimiyle, geliştirilen elektrotların yakıt pili testleri 5 cm2 aktif alanda yakıt pili test sistemi ile yapılmıştır. Bor içerikli indirgeme yaklaşımı, yakıt pili testlerinde PtCo/B/grafen katalizör ile 3000 mA/cm2 seviyelerinde diğer yaklaşımların 3 katı ve üzeri akım yoğunluğu vermiştir.

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Cite This Article

YAZICI, M. S., SAN, F. G. B. (2019). Production of boron-dopped CVD graphene and fuel cell performance. Bor Dergisi, Cilt: 4 - Sayı: 3, 141–147. https://ajindex.com/articles/252144

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