Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

MOF-derived CoP-nitrogen-doped carbon@NiFeP nanoflakes as an efficient and durable electrocatalyst with multiple catalytically active sites for OER, HER, ORR and rechargeable zinc-air batteries

Authors
Vijayakuma, E.Ramakrishnan, S.Sathiskumar, C.Yoo, Dong JinBalamurugan, J.Noh, Hyun SungKwon, DawoolKim, Young HoonLee, Haigun
Issue Date
15-1월-2022
Publisher
ELSEVIER SCIENCE SA
Keywords
Metal organic framework; Transition metal phosphide; Water splitting; Oxygen reduction reaction; Zinc-air batteries
Citation
CHEMICAL ENGINEERING JOURNAL, v.428
Indexed
SCIE
SCOPUS
Journal Title
CHEMICAL ENGINEERING JOURNAL
Volume
428
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/135258
DOI
10.1016/j.cej.2021.131115
ISSN
1385-8947
Abstract
Highly active, long-lasting, and low-cost nanostructured catalysts with efficient oxygen evolution and oxygen reduction reactions (OER and ORR) are critical for achieving high-performance zinc-air batteries. Herein, we developed CoP-nitrogen-doped carbon@NiFeP nanoflakes (CoP-NC@NFP), derived from MOF enriched with multiple active sites, for multifunctional water splitting and zinc-air battery applications. The experimental results revealed that the multiple active catalytic sites of CoP-NC@NFP were responsible for the excellent chargetransfer kinetics and electrocatalytic performance with respect to water splitting. This performance is comparable to that of precious metal catalysts in alkaline electrolytes (OER: overpotential of 270 mV; HER: overpotential of 162 mV; ORR: Tafel slope of 46 mV dec- 1; overall water splitting device: cell voltage of 1.57 V at 10 mA cm- 2) with excellent electrochemical durability. Additionally, the structural stability of the OER and the HER durability of the CoP-NC@NFP electrocatalyst were confirmed by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) studies. Most impressively, zinc-air batteries (ZABs) assembled with CoP-NC@NFP as the air-cathode exhibit exceptionally high power density of 93 mW cm-2 and prolonged operational stability over 200 h compared with a ZAB equipped with a benchmark air-cathode. The outcome of this study opens a practical possibility for the preparation of efficient multifunctional catalysts free of noble metals for clean energy production and storage.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles

qrcode

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

Related Researcher

Researcher Lee, Hai gun photo

Lee, Hai gun
공과대학 (신소재공학부)
Read more

Altmetrics

Total Views & Downloads

BROWSE