Top-down preparation of Ni-Pd-P@graphitic carbon core-shell nanostructure as a non-Pt catalyst for enhanced electrocatalytic reactions
- Authors
- Park, Deok-Hye; Kim, Yo-Seob; Han, Sang-Beom; Lee, Woo-Jun; Lee, Hak-Joo; Lee, Yong-Soo; Moon, Sang-Hyun; Park, Kyung-Won
- Issue Date
- 23-Jun-2021
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Bimetal phosphide; Electrocatalyst; Oxygen evolution reaction; Oxygen reduction reaction; Methanol oxidation reaction
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.46, no.43, pp.22499 - 22507
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 46
- Number
- 43
- Start Page
- 22499
- End Page
- 22507
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/41239
- DOI
- 10.1016/j.ijhydene.2021.04.079
- ISSN
- 0360-3199
- Abstract
- Electrochemical reactions such as the oxygen evolution reaction (OER), oxygen reduction reaction (ORR), and methanol oxidation reaction (MOR) are essential for energy conversion applications such as water electrolysis and fuel cells. Furthermore, Pt or Ir-related materials have been extensively utilized as electrocatalysts for the OER, ORR, and MOR. To reduce the utilization of precious metals, innovative catalyst structures should be proposed. Herein, we report a bi-metallic phosphide (Ni2P and PdP2) structure surrounded by graphitic carbon (Ni-Pd-P/C) with an enhanced electrochemical activity as compared to conventional electrocatalysts. Despite the low Pd content of 3 at%, Ni-Pd-P/C exhibits a low overpotential of 330 mV at 10 mA cm(-2) in the OER, high specific activity (2.82 mA cm(-2) at 0.8 V) for the ORR, and a high current density of 1.101 A mg(-1) for the MOR. The superior electrochemical performance of Ni-Pd-P/C may be attributed to the synergistic effect of the bi-metallic phosphide structure and core-shell structure formed by graphitic carbon. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.