สืบค้นงานวิจัย
Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe-N4 based oxygen reduction catalysts
Sanetuntikul J. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe-N4 based oxygen reduction catalysts
ผู้แต่ง / หัวหน้าโครงการ (EN): Sanetuntikul J.
บทคัดย่อ (EN): The development of inexpensive non-precious oxygen reduction catalysts has become one of the most important efforts in polymer electrolyte membrane fuel cells. In this report, we synthesized a non-precious electrocatalyst from a single precursor, iron(iii) diethylene triaminepentaacetate, using a heat-treatment effect to prepare an active catalyst. A series of catalysts were prepared at different temperatures leading to different degrees of graphitization, heteroatom content and activity. In 0.1 M KOH electrolyte solution, the oxygen reduction reaction (ORR) onset potential of the HNCS71 catalyst was as high as 0.97 V, and half-wave potentials were only 20 mV lower than those for Pt/C. X-ray absorption measurements of the Fe K-edge showed the structure of Fe-N4 centers, formed in HNCS71, which were responsible for the ORR activity. An alkaline exchange membrane fuel cell fabricated with HNCS71 as the cathode was tested in a H2-O2 single cell and showed a maximum power density of ∼68 mW cm-2. The 100 hour fuel cell durability test of the HNCS71 cathode showed a decay in the current density of about 14% at 0.4 V. Therefore, the HNCS catalyst appears to be a promising new class of non-precious catalysts for fuel cell applications. © 2015 Royal Society of Chemistry.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937459941&doi=10.1039%2fc5ta02677f&partnerID=40&md5=377b0fe2bf3b52a887410ca43cf089ad
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Solid electrolytes
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Sanetuntikul J.. "Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe-N4 based oxygen reduction catalysts". ไม่ระบุหน่วยงาน. ม.ป.ป.

Sanetuntikul J.. "Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe-N4 based oxygen reduction catalysts". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe-N4 based oxygen reduction catalysts
Sanetuntikul J.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
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