BROWSE

Related Researcher

Author

Joo, Sang Hoon
Nanomaterials & Catalysis Lab
Research Interests
  • Catalyst, energy conversion, fuel cells, electrolyzer, ORR, HER, OER

ITEM VIEW & DOWNLOAD

Ni@Ru and NiCo@Ru Core-Shell Hexagonal Nanosandwiches with a Compositionally Tunable Core and a Regioselectively Grown Shell

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Ni@Ru and NiCo@Ru Core-Shell Hexagonal Nanosandwiches with a Compositionally Tunable Core and a Regioselectively Grown Shell
Author
Hwang, HyeyounKwon, TaehyunKim, Ho YoungPark, JongsikOh, AramKim, ByeongyoonBaik, HionsuckJoo, Sang HoonLee, Kwangyeol
Keywords
anisotropic core– shell nanoparticles;  hetero-nanostructure interfaces;  lattice mismatch;  one-pot synthesis;  oxygen evolution reaction
Issue Date
201801
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v.14, no.3, pp.1702353 -
Abstract
The development of highly active electrocatalysts is crucial for the advancement of renewable energy conversion devices. The design of core-shell nanoparticle catalysts represents a promising approach to boost catalytic activity as well as save the use of expensive precious metals. Here, a simple, one-step synthetic route is reported to prepare hexagonal nanosandwich-shaped Ni@Ru core-shell nanoparticles (Ni@Ru HNS), in which Ru shell layers are overgrown in a regioselective manner on the top and bottom, and around the center section of a hexagonal Ni nanoplate core. Notably, the synthesis can be extended to NiCo@Ru core-shell nanoparticles with tunable core compositions (Ni3Cox@Ru HNS). Core-shell HNS structures show superior electrocatalytic activity for the oxygen evolution reaction (OER) to a commercial RuO2 black catalyst, with their OER activity being dependent on their core compositions. The observed trend in OER activity is correlated to the population of Ru oxide (Ru4+) species, which can be modulated by the core compositions.
URI
Go to Link
DOI
http://dx.doi.org/10.1002/smll.201702353
ISSN
1613-6810
Appears in Collections:
ECHE_Journal Papers

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

Show full item record

qr_code

  • mendeley

    citeulike

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

MENU