Enhanced Thermal Stability of Ultrathin Nanostructured Pt cathode by PdO: In Situ Nanodecoration for Low-Temperature Solid Oxide Fuel Cell

Wonjong Yu; Yeageun Lee; Arunkumar Pandiyan; Sanghoon Ji; Waqas Hassan Tanveer; Suk Won Cha

doi:10.1021/acsaem.8b01450

Enhanced Thermal Stability of Ultrathin Nanostructured Pt cathode by PdO: In Situ Nanodecoration for Low-Temperature Solid Oxide Fuel Cell

Wonjong Yu
, Yeageun Lee
, Arunkumar Pandiyan
, Sanghoon Ji
, Waqas Hassan Tanveer
, Suk Won Cha

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Due to its high surface area and catalytic activity, the nanostructure of platinum significantly enhances the electrochemical reactions of electrodes. However, the inherently poor thermomechanical stability of the nanostructure has been a critical issue. This study suggests a simple method of using a Pd layer deposited by sputtering to enhance the stability of the 20 nm thick nanoporous Pt. The microstructural analysis reveals that the Pd films are partially oxidized at operating temperature to nano-polycrystalline Pd formed around Pt particles and inhibiting the mobility of the Pt grains. By preserving the Pt nanostructure, the degradation rate of the Pt-Pd cathode structure is 10 times lower than that of the Pt cathode.

Original language	English
Pages (from-to)	5163-5168
Number of pages	6
Journal	ACS Applied Energy Materials
Volume	1
Issue number	10
DOIs	https://doi.org/10.1021/acsaem.8b01450
Publication status	Published - 22 Oct 2018

Bibliographical note

Publisher Copyright:
Copyright © 2018 American Chemical Society.

Keywords

Pt cathode
in situ nanodecoration
low-temperature solid oxide fuel cell
nanostructure
palladium oxide
thermal stability

Access to Document

10.1021/acsaem.8b01450

Cite this

@article{7c7cc6755c3045aaba9488c2c5ca3f20,

title = "Enhanced Thermal Stability of Ultrathin Nanostructured Pt cathode by PdO: In Situ Nanodecoration for Low-Temperature Solid Oxide Fuel Cell",

abstract = "Due to its high surface area and catalytic activity, the nanostructure of platinum significantly enhances the electrochemical reactions of electrodes. However, the inherently poor thermomechanical stability of the nanostructure has been a critical issue. This study suggests a simple method of using a Pd layer deposited by sputtering to enhance the stability of the 20 nm thick nanoporous Pt. The microstructural analysis reveals that the Pd films are partially oxidized at operating temperature to nano-polycrystalline Pd formed around Pt particles and inhibiting the mobility of the Pt grains. By preserving the Pt nanostructure, the degradation rate of the Pt-Pd cathode structure is 10 times lower than that of the Pt cathode.",

keywords = "Pt cathode, in situ nanodecoration, low-temperature solid oxide fuel cell, nanostructure, palladium oxide, thermal stability",

author = "Wonjong Yu and Yeageun Lee and Arunkumar Pandiyan and Sanghoon Ji and Tanveer, \{Waqas Hassan\} and Cha, \{Suk Won\}",

note = "Publisher Copyright: Copyright {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = oct,

day = "22",

doi = "10.1021/acsaem.8b01450",

language = "English",

volume = "1",

pages = "5163--5168",

journal = "ACS Applied Energy Materials",

issn = "2574-0962",

publisher = "American Chemical Society",

number = "10",

}

TY - JOUR

T1 - Enhanced Thermal Stability of Ultrathin Nanostructured Pt cathode by PdO

T2 - In Situ Nanodecoration for Low-Temperature Solid Oxide Fuel Cell

AU - Yu, Wonjong

AU - Lee, Yeageun

AU - Pandiyan, Arunkumar

AU - Ji, Sanghoon

AU - Tanveer, Waqas Hassan

AU - Cha, Suk Won

PY - 2018/10/22

Y1 - 2018/10/22

N2 - Due to its high surface area and catalytic activity, the nanostructure of platinum significantly enhances the electrochemical reactions of electrodes. However, the inherently poor thermomechanical stability of the nanostructure has been a critical issue. This study suggests a simple method of using a Pd layer deposited by sputtering to enhance the stability of the 20 nm thick nanoporous Pt. The microstructural analysis reveals that the Pd films are partially oxidized at operating temperature to nano-polycrystalline Pd formed around Pt particles and inhibiting the mobility of the Pt grains. By preserving the Pt nanostructure, the degradation rate of the Pt-Pd cathode structure is 10 times lower than that of the Pt cathode.

AB - Due to its high surface area and catalytic activity, the nanostructure of platinum significantly enhances the electrochemical reactions of electrodes. However, the inherently poor thermomechanical stability of the nanostructure has been a critical issue. This study suggests a simple method of using a Pd layer deposited by sputtering to enhance the stability of the 20 nm thick nanoporous Pt. The microstructural analysis reveals that the Pd films are partially oxidized at operating temperature to nano-polycrystalline Pd formed around Pt particles and inhibiting the mobility of the Pt grains. By preserving the Pt nanostructure, the degradation rate of the Pt-Pd cathode structure is 10 times lower than that of the Pt cathode.

KW - Pt cathode

KW - in situ nanodecoration

KW - low-temperature solid oxide fuel cell

KW - nanostructure

KW - palladium oxide

KW - thermal stability

UR - https://www.scopus.com/pages/publications/85064747091

U2 - 10.1021/acsaem.8b01450

DO - 10.1021/acsaem.8b01450

M3 - Article

AN - SCOPUS:85064747091

SN - 2574-0962

VL - 1

SP - 5163

EP - 5168

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 10

ER -

Enhanced Thermal Stability of Ultrathin Nanostructured Pt cathode by PdO: In Situ Nanodecoration for Low-Temperature Solid Oxide Fuel Cell

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this