BROWSE

Related Researcher

Author's Photo

Kim, Guntae
gunslab
Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system, Catalyst for DRM

ITEM VIEW & DOWNLOAD

Edge-selective decoration with ruthenium at graphitic nanoplatelets for efficient hydrogen production at universal pH

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Edge-selective decoration with ruthenium at graphitic nanoplatelets for efficient hydrogen production at universal pH
Author
Yang, YejinKim, JeongwonKim, ChangminSeong, ArimKwon, OhhunLee, Jeong HyeonKristanto, ImanuelZhang, LinjuanZhou, JingWang, Jian-QiangBaek, Jong-BeomKwak, Sang KyuKim, Guntae
Issue Date
2020-10
Publisher
ELSEVIER
Citation
NANO ENERGY, v.76, pp.105114
Abstract
Although the electrochemical reaction is an effective and great promise to produce hydrogen, the realization of efficient and stable catalysts is still a significant challenge in the various electrochemical systems, such as water splitting and Zn-CO2 system. Herein, we report Ru nanoparticles anchored at edge-selectively nitrogenated graphitic nanoplatelets (Ru-ENG) instead of on the basal plane in two-dimensional (2D) graphitic substrate. The Ru nanoparticles interacted with both of armchair-ENG and zigzag-ENG substrate lead to favorable hydrogen evolution activities of icosahedron cluster Ru-13 in Ru-ENG at a universal pH, compared to Ru metal cluster. The spontaneous electron re-construction between edge-site of N and ruthenium particles in Ru-ENG catalyst is attributed to the faster reaction kinetics with lower Tafel slopes and higher turnover frequencies than the benchmark Pt/C catalyst in any pH conditions. More importantly, the Ru-ENG electrocatalyst exhibited superior long-term consecutive stability (over 1,500 h) at a high current density of 100 mA cm(-2) in the practical water-splitting system.
URI
https://scholarworks.unist.ac.kr/handle/201301/48684
URL
https://www.sciencedirect.com/science/article/pii/S2211285520306923
DOI
10.1016/j.nanoen.2020.105114
ISSN
2211-2855
Appears in Collections:
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