Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films
Substitution of lanthanum by strontium (Sr) in the A-site of cobalt-containing perovskites can greatly promote oxygen surface exchange kinetics at elevated temperatures. Little is known about the effect of A-site substitution on the oxygen electrocatalysis of Ruddlesden–Popper (RP) oxides. In this s...
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| Format: | Article |
| Language: | en_US |
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Royal Society of Chemistry
2015
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| Online Access: | http://hdl.handle.net/1721.1/97719 https://orcid.org/0000-0003-2477-6412 https://orcid.org/0000-0003-1560-0749 https://orcid.org/0000-0002-9966-205X |
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| author | Lee, Dongkyu Lee, Yueh-Lin Grimaud, Alexis Biegalski, Michael D. Morgan, Dane Shao-Horn, Yang Hong, Wesley Terrence |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Lee, Dongkyu Lee, Yueh-Lin Grimaud, Alexis Biegalski, Michael D. Morgan, Dane Shao-Horn, Yang Hong, Wesley Terrence |
| author_sort | Lee, Dongkyu |
| collection | MIT |
| description | Substitution of lanthanum by strontium (Sr) in the A-site of cobalt-containing perovskites can greatly promote oxygen surface exchange kinetics at elevated temperatures. Little is known about the effect of A-site substitution on the oxygen electrocatalysis of Ruddlesden–Popper (RP) oxides. In this study, we report, for the first time, the growth and oxygen surface exchange kinetics of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (LSNO, 0.0 ≤ x[subscript Sr] ≤ 1.0) thin films grown on (001)[subscript cubic]-Y[subscript 2]O[subscript 3]-stabilized ZrO[subscript 2] (YSZ) by pulsed laser deposition. High-resolution X-ray diffraction analysis revealed that the LSNO film orientation was changed gradually from the (100)[subscript tetra.] (in-plane) to the (001)[subscript tetra.] (out-of-plane) orientation in the RP structure with increasing Sr from La[subscript 2]NiO[subscript 4+δ] (x[subscript Sr] = 0) to LaSrNiO[subscript 4±δ] (x[subscript Sr] = 1.0). Such a change in the LSNO film orientation was accompanied by reduction in the oxygen surface exchange kinetics by two orders of magnitude as shown from electrochemical impedance spectroscopy results. Density functional theory (DFT) calculations showed that Sr substitution could stabilize the (001)[subscript tetra.] surface relative to the (100)[subscript tetra.] surface and both Sr substitution and increasing (001)[subscript tetra.] surface could greatly weaken adsorption of molecular oxygen in the La–La bridge sites in the RP structure, which can reduce oxygen surface exchange kinetics. |
| first_indexed | 2024-09-23T08:19:14Z |
| format | Article |
| id | mit-1721.1/97719 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:19:14Z |
| publishDate | 2015 |
| publisher | Royal Society of Chemistry |
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| spelling | mit-1721.1/977192022-09-30T08:58:12Z Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films Lee, Dongkyu Lee, Yueh-Lin Grimaud, Alexis Biegalski, Michael D. Morgan, Dane Shao-Horn, Yang Hong, Wesley Terrence Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Electrochemical Energy Laboratory Massachusetts Institute of Technology. Research Laboratory of Electronics Lee, Dongkyu Lee, Yueh-Lin Grimaud, Alexis Hong, Wesley Terrence Shao-Horn, Yang Substitution of lanthanum by strontium (Sr) in the A-site of cobalt-containing perovskites can greatly promote oxygen surface exchange kinetics at elevated temperatures. Little is known about the effect of A-site substitution on the oxygen electrocatalysis of Ruddlesden–Popper (RP) oxides. In this study, we report, for the first time, the growth and oxygen surface exchange kinetics of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (LSNO, 0.0 ≤ x[subscript Sr] ≤ 1.0) thin films grown on (001)[subscript cubic]-Y[subscript 2]O[subscript 3]-stabilized ZrO[subscript 2] (YSZ) by pulsed laser deposition. High-resolution X-ray diffraction analysis revealed that the LSNO film orientation was changed gradually from the (100)[subscript tetra.] (in-plane) to the (001)[subscript tetra.] (out-of-plane) orientation in the RP structure with increasing Sr from La[subscript 2]NiO[subscript 4+δ] (x[subscript Sr] = 0) to LaSrNiO[subscript 4±δ] (x[subscript Sr] = 1.0). Such a change in the LSNO film orientation was accompanied by reduction in the oxygen surface exchange kinetics by two orders of magnitude as shown from electrochemical impedance spectroscopy results. Density functional theory (DFT) calculations showed that Sr substitution could stabilize the (001)[subscript tetra.] surface relative to the (100)[subscript tetra.] surface and both Sr substitution and increasing (001)[subscript tetra.] surface could greatly weaken adsorption of molecular oxygen in the La–La bridge sites in the RP structure, which can reduce oxygen surface exchange kinetics. United States. Dept. of Energy (SISGR DESC0002633) King Abdullah University of Science and Technology Center for Clean Water and Clean Energy at MIT and KFUPM United States. Dept. of Energy. Office of Basic Energy Sciences (Division of Materials Sciences and Engineering Award DESC0001284) 2015-07-13T14:14:35Z 2015-07-13T14:14:35Z 2014-02 2013-11 Article http://purl.org/eprint/type/JournalArticle 2050-7488 2050-7496 http://hdl.handle.net/1721.1/97719 Lee, Dongkyu, Yueh-Lin Lee, Alexis Grimaud, Wesley T. Hong, Michael D. Biegalski, Dane Morgan, and Yang Shao-Horn. “Strontium Influence on the Oxygen Electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) Thin Films.” J. Mater. Chem. A 2, no. 18 (2014): 6480. https://orcid.org/0000-0003-2477-6412 https://orcid.org/0000-0003-1560-0749 https://orcid.org/0000-0002-9966-205X en_US http://dx.doi.org/10.1039/c3ta14918h Journal of Materials Chemistry A Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Royal Society of Chemistry Other univ. web domain |
| spellingShingle | Lee, Dongkyu Lee, Yueh-Lin Grimaud, Alexis Biegalski, Michael D. Morgan, Dane Shao-Horn, Yang Hong, Wesley Terrence Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films |
| title | Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films |
| title_full | Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films |
| title_fullStr | Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films |
| title_full_unstemmed | Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films |
| title_short | Strontium influence on the oxygen electrocatalysis of La[subscript 2−x]Sr[subscript x]NiO[subscript 4±δ] (0.0 ≤ x[subscript Sr] ≤ 1.0) thin films |
| title_sort | strontium influence on the oxygen electrocatalysis of la subscript 2 x sr subscript x nio subscript 4 δ 0 0 ≤ x subscript sr ≤ 1 0 thin films |
| url | http://hdl.handle.net/1721.1/97719 https://orcid.org/0000-0003-2477-6412 https://orcid.org/0000-0003-1560-0749 https://orcid.org/0000-0002-9966-205X |
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