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

Self-reconstructed interlayer derived by in-situ Mn diffusion from La0.5Sr0.5MnO3 via atomic layer deposition for an efficient bi-functional electrocatalyst

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Self-reconstructed interlayer derived by in-situ Mn diffusion from La0.5Sr0.5MnO3 via atomic layer deposition for an efficient bi-functional electrocatalyst
Author
Seong, ArimKim, JeongwonKwon, OhhunJeong, Hu YoungGorte, Raymond J.Vohs, John M.Kim, Guntae
Issue Date
2020-05
Publisher
ELSEVIER
Citation
NANO ENERGY, v.71, pp.104564
Abstract
The development of efficient electrocatalyst is crucial to realize a sustainable energy conversion and storage system. Herein, we have applied atomic layer deposition (ALD) to depositing nano-sized Co3O4 onto La0.5Sr0.5MnO3 (LSM). Interestingly, an in-situ Mn diffusion from LSM during ALD process gives a self-reconstructed MnCo2O4 spinel interlayer between LSM and Co3O4. The X-ray absorption fine structure (XAFS) of LSM with 20 ALD cycles of Co3O4 (LSM-20-Co) showed a partially left-shifted white line of Co K-edge compared to the that of Co3O4, confirming the existence of the MnCo2O4 interlayer. Notably, the LSM-20-Co catalyst showed comparable Tafel slope for both the ORR (65 mV dec(-1)) and the OER (82 mV dec(-1)) comparing with the Pt/C (58 mV dec(-1)) and IrO2 (114 mV dec(-1)), along with stable cycling performance over 450 min for alkaline Zinc-air battery. This work provides the rational design strategy of self-constructed interlayer via ALD process for efficient bi-functional electrocatalyst.
URI
https://scholarworks.unist.ac.kr/handle/201301/32196
URL
https://www.sciencedirect.com/science/article/pii/S2211285520301221?via%3Dihub#!
DOI
10.1016/j.nanoen.2020.104564
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