BROWSE

Related Researcher

Author's Photo

Kim, Guntae
GUNS Lab
Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system

ITEM VIEW & DOWNLOAD

Robust fused aromatic pyrazine-based two-dimensional network for stably cocooning iron nanoparticles as an oxygen reduction electrocatalyst

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Robust fused aromatic pyrazine-based two-dimensional network for stably cocooning iron nanoparticles as an oxygen reduction electrocatalyst
Author
Ahmad, IshfaqLi, FengKim, ChangminSeo, Jeong-MinKim, GuntaeMahmood, JaveedJeong, Hu YoungBaek, Jong-Beom
Issue Date
2019-02
Publisher
Elsevier BV
Citation
NANO ENERGY, v.56, pp.581 - 587
Abstract
Fused aromatic (FA) porous organic networks (PON) have unique properties including structural diversity, low density, thermal and chemical stability, and are gaining extensive attention in the scientific community. Here, we report a new FA-PON formed by polycondensation between triphenylene hexamine (TPH) and hexaketocyclohexanone (HKH) octahydrate. The structure and properties of the FA-PON were characterized by various techniques, which showed the chemical formula of the repeating unit to be C24N6 (C4N1), with good thermal and chemical stability. The hole-to-hole distance of the FA-PON was 0.994 nm and each hole contained 6 nitrogen atoms, allowing the efficient fixation and encapsulation of iron (Fe) nanoparticles, and formation of a durable indirect-contact catalyst for the oxygen reduction reaction (ORR). The Fe nanoparticles on the FA-PON (Fe@FA-PON) catalyst displayed high electrocatalytic activity with durability in both acidic and alkaline media. Moreover, the catalyst exhibited unusual ORR activity with a half wave potential of 0.884 V, which is a 38 mV positive shift compared to commercial platinum on activated carbon (Pt/C) catalyst in alkaline medium.
URI
https://scholarworks.unist.ac.kr/handle/201301/25598
URL
https://www.sciencedirect.com/science/article/pii/S221128551830911X?via%3Dihub
DOI
10.1016/j.nanoen.2018.12.007
ISSN
2211-2855
Appears in Collections:
UCRF_Journal Papers
ECHE_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU