Catalytic activity of morphology-tailored NiO–Ce0.8Gd0.2O2−δ synthesized by a hexamethylenetetramine (HMT)-assisted solvothermal process

Manasa K. Rath; Trilochan Sahoo; Ki Tae Lee

doi:10.1016/j.ceramint.2015.06.107

Catalytic activity of morphology-tailored NiO–Ce_0.8Gd_0.2O_2−δ synthesized by a hexamethylenetetramine (HMT)-assisted solvothermal process

Manasa K. Rath
, Trilochan Sahoo
, Ki Tae Lee^*

^*Corresponding author for this work

Electronic Materials Engineering

Research output: Contribution to journal › Journal article › peer-review

5 Scopus citations

Abstract

NiO–Ce_0.8Gd_0.2O_2−δ (GDC) powders with controlled morphology were synthesized by a solvothermal process varying the hexamethylenetetramine (HMT) to precursor ratio. The formation of diverse morphologies as micro-flower, micro-cubes and micro-rods with different porosity were observed by varying the HMT to precursor ratio. The catalytic activity for the hydrogen oxidation reaction (HOR) and methane oxidation reaction (MOR) of the Ni–GDC anodes was studied by impedance spectra analysis using an yttria-stabilized zirconia (YSZ)-supported symmetry half-cell. Ni–GDC anode fabricated with 100HMT powder (100 wt% HMT) exhibited the least polarization resistivity of 2.59 Ω cm² and 26.3 Ω cm² measured at 750 °C under humidified H₂ and CH₄ flow, respectively. The Ni–GDC anode with better pore distribution exhibited the best electro-catalytic activity.

Original language	English
Pages (from-to)	12742-12750
Number of pages	9
Journal	Ceramics International
Volume	41
Issue number	10
DOIs	https://doi.org/10.1016/j.ceramint.2015.06.107
State	Published - 2015.12

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Anode
Electrochemical performance
Solid oxide fuel cell
Solvothermal process

Quacquarelli Symonds(QS) Subject Topics

Materials Science
Engineering - Petroleum
Engineering - Chemical

Access to Document

10.1016/j.ceramint.2015.06.107

Cite this

@article{bb2ce5a1477141dca9210a86125e18cf,

title = "Catalytic activity of morphology-tailored NiO–Ce0.8Gd0.2O2−δ synthesized by a hexamethylenetetramine (HMT)-assisted solvothermal process",

abstract = "NiO–Ce0.8Gd0.2O2−δ (GDC) powders with controlled morphology were synthesized by a solvothermal process varying the hexamethylenetetramine (HMT) to precursor ratio. The formation of diverse morphologies as micro-flower, micro-cubes and micro-rods with different porosity were observed by varying the HMT to precursor ratio. The catalytic activity for the hydrogen oxidation reaction (HOR) and methane oxidation reaction (MOR) of the Ni–GDC anodes was studied by impedance spectra analysis using an yttria-stabilized zirconia (YSZ)-supported symmetry half-cell. Ni–GDC anode fabricated with 100HMT powder (100 wt\% HMT) exhibited the least polarization resistivity of 2.59 Ω cm2 and 26.3 Ω cm2 measured at 750 °C under humidified H2 and CH4 flow, respectively. The Ni–GDC anode with better pore distribution exhibited the best electro-catalytic activity.",

keywords = "Anode, Electrochemical performance, Solid oxide fuel cell, Solvothermal process",

author = "Rath, \{Manasa K.\} and Trilochan Sahoo and Lee, \{Ki Tae\}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd and Techna Group S.r.l.",

year = "2015",

month = dec,

doi = "10.1016/j.ceramint.2015.06.107",

language = "English",

volume = "41",

pages = "12742--12750",

journal = "Ceramics International",

issn = "0272-8842",

number = "10",

}

TY - JOUR

T1 - Catalytic activity of morphology-tailored NiO–Ce0.8Gd0.2O2−δ synthesized by a hexamethylenetetramine (HMT)-assisted solvothermal process

AU - Rath, Manasa K.

AU - Sahoo, Trilochan

AU - Lee, Ki Tae

PY - 2015/12

Y1 - 2015/12

N2 - NiO–Ce0.8Gd0.2O2−δ (GDC) powders with controlled morphology were synthesized by a solvothermal process varying the hexamethylenetetramine (HMT) to precursor ratio. The formation of diverse morphologies as micro-flower, micro-cubes and micro-rods with different porosity were observed by varying the HMT to precursor ratio. The catalytic activity for the hydrogen oxidation reaction (HOR) and methane oxidation reaction (MOR) of the Ni–GDC anodes was studied by impedance spectra analysis using an yttria-stabilized zirconia (YSZ)-supported symmetry half-cell. Ni–GDC anode fabricated with 100HMT powder (100 wt% HMT) exhibited the least polarization resistivity of 2.59 Ω cm2 and 26.3 Ω cm2 measured at 750 °C under humidified H2 and CH4 flow, respectively. The Ni–GDC anode with better pore distribution exhibited the best electro-catalytic activity.

AB - NiO–Ce0.8Gd0.2O2−δ (GDC) powders with controlled morphology were synthesized by a solvothermal process varying the hexamethylenetetramine (HMT) to precursor ratio. The formation of diverse morphologies as micro-flower, micro-cubes and micro-rods with different porosity were observed by varying the HMT to precursor ratio. The catalytic activity for the hydrogen oxidation reaction (HOR) and methane oxidation reaction (MOR) of the Ni–GDC anodes was studied by impedance spectra analysis using an yttria-stabilized zirconia (YSZ)-supported symmetry half-cell. Ni–GDC anode fabricated with 100HMT powder (100 wt% HMT) exhibited the least polarization resistivity of 2.59 Ω cm2 and 26.3 Ω cm2 measured at 750 °C under humidified H2 and CH4 flow, respectively. The Ni–GDC anode with better pore distribution exhibited the best electro-catalytic activity.

KW - Anode

KW - Electrochemical performance

KW - Solid oxide fuel cell

KW - Solvothermal process

UR - https://www.scopus.com/pages/publications/84936796974

U2 - 10.1016/j.ceramint.2015.06.107

DO - 10.1016/j.ceramint.2015.06.107

M3 - Journal article

AN - SCOPUS:84936796974

SN - 0272-8842

VL - 41

SP - 12742

EP - 12750

JO - Ceramics International

JF - Ceramics International

IS - 10

ER -