LSCM-YSZ nanocomposites for a high performance SOFC anode

Inyong Jung; Daehee Lee; Seong Oh Lee; Dongha Kim; Joosun Kim; Sang Hoon Hyun; Jooho Moon

doi:10.1016/j.ceramint.2013.05.022

LSCM-YSZ nanocomposites for a high performance SOFC anode

Inyong Jung, Daehee Lee, Seong Oh Lee, Dongha Kim, Joosun Kim, Sang Hoon Hyun, Jooho Moon

Department of Materials Science and Engineering

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

32 Citations (Scopus)

Abstract

La_0.75Sr_0.25Cr_0.5Mn_0.5O _3-δ (LSCM) is a promising Ni-free anode material with reliable performance. LSCM retains excellent stability in both oxidizing and reducing environments at high operating temperatures, which makes it adoptable as solid oxide fuel cell (SOFC) anodes. However, the relatively inferior catalytic activity compared to Ni composite anodes limits the applicability in SOFC systems. Nanocomposite La_0.75Sr_0.25Cr_0.5Mn _0.5O_3-δ-Y_0.16Zr_0.84O _1.92 (LSCM-YSZ) anodes are investigated to improve the catalytic activity by effective dispersion of LSCM nanoparticles on stable YSZ backbones. LSCM-YSZ nanocomposite powders were synthesized via a polymerizable complex method. LSM-YSZ|yttria stabilized zirconia (YSZ)|LSCM-YSZ unit cells were characterized by electrochemical impedance spectroscopy and a current interruption method. Compositional mapping analysis on the LSCM-YSZ nanocomposite anode demonstrates uniform dispersion of LSCM nanoparticles and phase connectivity between LSCM and YSZ, resulting in a lower electrode polarization resistance of 1.82 Ω cm² and greater peak power density of 177 mW cm^-2 at 850 C.

Original language	English
Pages (from-to)	9753-9758
Number of pages	6
Journal	Ceramics International
Volume	39
Issue number	8
DOIs	https://doi.org/10.1016/j.ceramint.2013.05.022
Publication status	Published - 2013 Dec

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. 2012R1A3A2026417 ). It was also partially supported by the Second Stage of the Brain Korea 21 Project .

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2013.05.022

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title = "LSCM-YSZ nanocomposites for a high performance SOFC anode",

abstract = "La0.75Sr0.25Cr0.5Mn0.5O 3-δ (LSCM) is a promising Ni-free anode material with reliable performance. LSCM retains excellent stability in both oxidizing and reducing environments at high operating temperatures, which makes it adoptable as solid oxide fuel cell (SOFC) anodes. However, the relatively inferior catalytic activity compared to Ni composite anodes limits the applicability in SOFC systems. Nanocomposite La0.75Sr0.25Cr0.5Mn 0.5O3-δ-Y0.16Zr0.84O 1.92 (LSCM-YSZ) anodes are investigated to improve the catalytic activity by effective dispersion of LSCM nanoparticles on stable YSZ backbones. LSCM-YSZ nanocomposite powders were synthesized via a polymerizable complex method. LSM-YSZ|yttria stabilized zirconia (YSZ)|LSCM-YSZ unit cells were characterized by electrochemical impedance spectroscopy and a current interruption method. Compositional mapping analysis on the LSCM-YSZ nanocomposite anode demonstrates uniform dispersion of LSCM nanoparticles and phase connectivity between LSCM and YSZ, resulting in a lower electrode polarization resistance of 1.82 Ω cm2 and greater peak power density of 177 mW cm-2 at 850 C.",

author = "Inyong Jung and Daehee Lee and Lee, {Seong Oh} and Dongha Kim and Joosun Kim and Hyun, {Sang Hoon} and Jooho Moon",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. 2012R1A3A2026417 ). It was also partially supported by the Second Stage of the Brain Korea 21 Project .",

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AU - Jung, Inyong

AU - Lee, Daehee

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AU - Kim, Dongha

AU - Kim, Joosun

AU - Hyun, Sang Hoon

AU - Moon, Jooho

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (No. 2012R1A3A2026417 ). It was also partially supported by the Second Stage of the Brain Korea 21 Project .

PY - 2013/12

Y1 - 2013/12

N2 - La0.75Sr0.25Cr0.5Mn0.5O 3-δ (LSCM) is a promising Ni-free anode material with reliable performance. LSCM retains excellent stability in both oxidizing and reducing environments at high operating temperatures, which makes it adoptable as solid oxide fuel cell (SOFC) anodes. However, the relatively inferior catalytic activity compared to Ni composite anodes limits the applicability in SOFC systems. Nanocomposite La0.75Sr0.25Cr0.5Mn 0.5O3-δ-Y0.16Zr0.84O 1.92 (LSCM-YSZ) anodes are investigated to improve the catalytic activity by effective dispersion of LSCM nanoparticles on stable YSZ backbones. LSCM-YSZ nanocomposite powders were synthesized via a polymerizable complex method. LSM-YSZ|yttria stabilized zirconia (YSZ)|LSCM-YSZ unit cells were characterized by electrochemical impedance spectroscopy and a current interruption method. Compositional mapping analysis on the LSCM-YSZ nanocomposite anode demonstrates uniform dispersion of LSCM nanoparticles and phase connectivity between LSCM and YSZ, resulting in a lower electrode polarization resistance of 1.82 Ω cm2 and greater peak power density of 177 mW cm-2 at 850 C.

AB - La0.75Sr0.25Cr0.5Mn0.5O 3-δ (LSCM) is a promising Ni-free anode material with reliable performance. LSCM retains excellent stability in both oxidizing and reducing environments at high operating temperatures, which makes it adoptable as solid oxide fuel cell (SOFC) anodes. However, the relatively inferior catalytic activity compared to Ni composite anodes limits the applicability in SOFC systems. Nanocomposite La0.75Sr0.25Cr0.5Mn 0.5O3-δ-Y0.16Zr0.84O 1.92 (LSCM-YSZ) anodes are investigated to improve the catalytic activity by effective dispersion of LSCM nanoparticles on stable YSZ backbones. LSCM-YSZ nanocomposite powders were synthesized via a polymerizable complex method. LSM-YSZ|yttria stabilized zirconia (YSZ)|LSCM-YSZ unit cells were characterized by electrochemical impedance spectroscopy and a current interruption method. Compositional mapping analysis on the LSCM-YSZ nanocomposite anode demonstrates uniform dispersion of LSCM nanoparticles and phase connectivity between LSCM and YSZ, resulting in a lower electrode polarization resistance of 1.82 Ω cm2 and greater peak power density of 177 mW cm-2 at 850 C.

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LSCM-YSZ nanocomposites for a high performance SOFC anode

Abstract

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