Strain Influence on the Oxygen Electrocatalysis of the (100)-Oriented Epitaxial La 2 NiO 4+δ Thin Films at Elevated Temperatures

Dongkyu Lee; Alexis Grimaud; Ethan J. Crumlin; Khaled Mezghani; Mohamed A. Habib; Zhenxing Feng; Wesley T. Hong; Michael D. Biegalski; Hans M. Christen; Yang Shao-Horn

doi:10.1021/jp404121p

Strain Influence on the Oxygen Electrocatalysis of the (100)-Oriented Epitaxial La 2 NiO 4+δ Thin Films at Elevated Temperatures

Dongkyu Lee, Alexis Grimaud, Ethan J. Crumlin, Khaled Mezghani, Mohamed A. Habib, Zhenxing Feng, Wesley T. Hong, Michael D. Biegalski, Hans M. Christen, Yang Shao-Horn

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Abstract

Ruddlesden-Popper materials such as La2NiO4+δ (LNO) have high activities for surface oxygen exchange kinetics promising for solid oxide fuel cells and oxygen permeation membranes. Here we report the synthesis of the (100)tetragonal-oriented epitaxial LNO thin films prepared by pulsed laser deposition. The surface oxygen exchange kinetics determined from electrochemical impedance spectroscopy (EIS) were found to increase with decreasing film thickness from 390 to 14 nm. No significant change of the surface chemistry with different film thicknesses was observed using ex situ auger electron spectroscopy (AES). Increasing volumetric strains in the LNO films at elevated temperatures determined from in situ high-resolution X-ray diffraction (HRXRD) were correlated with increasing surface exchange kinetics and decreasing film thickness. Volumetric strains may alter the formation energy of interstitial oxygen and influence on the surface oxygen exchange kinetics of the LNO films. © 2013 American Chemical Society.

Original language	English (US)
Pages (from-to)	18789-18795
Number of pages	7
Journal	The Journal of Physical Chemistry C
Volume	117
Issue number	37
DOIs	https://doi.org/10.1021/jp404121p
State	Published - Sep 6 2013
Externally published	Yes

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Lee, D., Grimaud, A., Crumlin, E. J., Mezghani, K., Habib, M. A., Feng, Z., Hong, W. T., Biegalski, M. D., Christen, H. M., & Shao-Horn, Y. (2013). Strain Influence on the Oxygen Electrocatalysis of the (100)-Oriented Epitaxial La 2 NiO 4+δ Thin Films at Elevated Temperatures. The Journal of Physical Chemistry C, 117(37), 18789-18795. https://doi.org/10.1021/jp404121p

@article{cbcf0321991c4762835239557ead1af6,

title = "Strain Influence on the Oxygen Electrocatalysis of the (100)-Oriented Epitaxial La 2 NiO 4+δ Thin Films at Elevated Temperatures",

abstract = "Ruddlesden-Popper materials such as La2NiO4+δ (LNO) have high activities for surface oxygen exchange kinetics promising for solid oxide fuel cells and oxygen permeation membranes. Here we report the synthesis of the (100)tetragonal-oriented epitaxial LNO thin films prepared by pulsed laser deposition. The surface oxygen exchange kinetics determined from electrochemical impedance spectroscopy (EIS) were found to increase with decreasing film thickness from 390 to 14 nm. No significant change of the surface chemistry with different film thicknesses was observed using ex situ auger electron spectroscopy (AES). Increasing volumetric strains in the LNO films at elevated temperatures determined from in situ high-resolution X-ray diffraction (HRXRD) were correlated with increasing surface exchange kinetics and decreasing film thickness. Volumetric strains may alter the formation energy of interstitial oxygen and influence on the surface oxygen exchange kinetics of the LNO films. {\textcopyright} 2013 American Chemical Society.",

author = "Dongkyu Lee and Alexis Grimaud and Crumlin, {Ethan J.} and Khaled Mezghani and Habib, {Mohamed A.} and Zhenxing Feng and Hong, {Wesley T.} and Biegalski, {Michael D.} and Christen, {Hans M.} and Yang Shao-Horn",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported in part by DOE (SISGR DESC0002633) and King Abdullah University of Science and Technology. The authors like to thank the King Fahd University of Petroleum and Minerals in Dharam, Saudi Arabia, for funding the research reported in this paper through the Center for Clean Water and Clean Energy at MIT and KFUPM. The PLD was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2013",

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doi = "10.1021/jp404121p",

language = "English (US)",

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AU - Lee, Dongkyu

AU - Grimaud, Alexis

AU - Crumlin, Ethan J.

AU - Mezghani, Khaled

AU - Habib, Mohamed A.

AU - Feng, Zhenxing

AU - Hong, Wesley T.

AU - Biegalski, Michael D.

AU - Christen, Hans M.

AU - Shao-Horn, Yang

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported in part by DOE (SISGR DESC0002633) and King Abdullah University of Science and Technology. The authors like to thank the King Fahd University of Petroleum and Minerals in Dharam, Saudi Arabia, for funding the research reported in this paper through the Center for Clean Water and Clean Energy at MIT and KFUPM. The PLD was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2013/9/6

Y1 - 2013/9/6

N2 - Ruddlesden-Popper materials such as La2NiO4+δ (LNO) have high activities for surface oxygen exchange kinetics promising for solid oxide fuel cells and oxygen permeation membranes. Here we report the synthesis of the (100)tetragonal-oriented epitaxial LNO thin films prepared by pulsed laser deposition. The surface oxygen exchange kinetics determined from electrochemical impedance spectroscopy (EIS) were found to increase with decreasing film thickness from 390 to 14 nm. No significant change of the surface chemistry with different film thicknesses was observed using ex situ auger electron spectroscopy (AES). Increasing volumetric strains in the LNO films at elevated temperatures determined from in situ high-resolution X-ray diffraction (HRXRD) were correlated with increasing surface exchange kinetics and decreasing film thickness. Volumetric strains may alter the formation energy of interstitial oxygen and influence on the surface oxygen exchange kinetics of the LNO films. © 2013 American Chemical Society.

AB - Ruddlesden-Popper materials such as La2NiO4+δ (LNO) have high activities for surface oxygen exchange kinetics promising for solid oxide fuel cells and oxygen permeation membranes. Here we report the synthesis of the (100)tetragonal-oriented epitaxial LNO thin films prepared by pulsed laser deposition. The surface oxygen exchange kinetics determined from electrochemical impedance spectroscopy (EIS) were found to increase with decreasing film thickness from 390 to 14 nm. No significant change of the surface chemistry with different film thicknesses was observed using ex situ auger electron spectroscopy (AES). Increasing volumetric strains in the LNO films at elevated temperatures determined from in situ high-resolution X-ray diffraction (HRXRD) were correlated with increasing surface exchange kinetics and decreasing film thickness. Volumetric strains may alter the formation energy of interstitial oxygen and influence on the surface oxygen exchange kinetics of the LNO films. © 2013 American Chemical Society.

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SN - 1932-7447

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JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

IS - 37

ER -

Strain Influence on the Oxygen Electrocatalysis of the (100)-Oriented Epitaxial La 2 NiO 4+δ Thin Films at Elevated Temperatures

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