Spatially resolved mapping of oxygen reduction/evolution reaction on solid-oxide fuel cell cathodes with sub-10 nm resolution

Amit Kumar; Donovan Leonard; Stephen Jesse; Francesco Ciucci; Eugene A. Eliseev; Anna N. Morozovska; Michael D. Biegalski; Hans M. Christen; Alexander Tselev; Eva Mutoro; Ethan J. Crumlin; Dane Morgan; Shao Horn Yang; Albina Borisevich; Sergei V. Kalinin

doi:10.1021/nn303239e

Spatially resolved mapping of oxygen reduction/evolution reaction on solid-oxide fuel cell cathodes with sub-10 nm resolution

Amit Kumar, Donovan Leonard, Stephen Jesse, Francesco Ciucci, Eugene A. Eliseev, Anna N. Morozovska, Michael D. Biegalski, Hans M. Christen, Alexander Tselev, Eva Mutoro, Ethan J. Crumlin, Dane Morgan, Shao Horn Yang, Albina Borisevich, Sergei V. Kalinin

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

25 Scopus citations

Abstract

Spatial localization of the oxygen reduction/evolution reactions on lanthanum strontium cobaltite (LSCO) surfaces with perovskite and layered perovskite structures is studied at the sub-10 nm level. Comparison between electrochemical strain microscopy (ESM) and structural imaging by scanning transmission electron microscopy (STEM) suggests that small-angle grain boundaries act as regions with enhanced electrochemical activity. The ESM activity is compared across a family of LSCO samples, demonstrating excellent agreement with macroscopic behaviors. This study potentially paves the way for deciphering the mechanisms of electrochemical activity of solids on the level of single extended structural defects such as grain boundaries and dislocations.

Original language	English
Pages (from-to)	3808-3814
Number of pages	7
Journal	ACS Nano
Volume	7
Issue number	5
DOIs	https://doi.org/10.1021/nn303239e
State	Published - May 28 2013

Keywords

cobaltites
electrochemical activity
electrochemical strain microscopy
fuel cells
structural defects

UN SDGs

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

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10.1021/nn303239e

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Kumar, A., Leonard, D., Jesse, S., Ciucci, F., Eliseev, E. A., Morozovska, A. N., Biegalski, M. D., Christen, H. M., Tselev, A., Mutoro, E., Crumlin, E. J., Morgan, D., Yang, S. H., Borisevich, A., & Kalinin, S. V. (2013). Spatially resolved mapping of oxygen reduction/evolution reaction on solid-oxide fuel cell cathodes with sub-10 nm resolution. ACS Nano, 7(5), 3808-3814. https://doi.org/10.1021/nn303239e

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title = "Spatially resolved mapping of oxygen reduction/evolution reaction on solid-oxide fuel cell cathodes with sub-10 nm resolution",

abstract = "Spatial localization of the oxygen reduction/evolution reactions on lanthanum strontium cobaltite (LSCO) surfaces with perovskite and layered perovskite structures is studied at the sub-10 nm level. Comparison between electrochemical strain microscopy (ESM) and structural imaging by scanning transmission electron microscopy (STEM) suggests that small-angle grain boundaries act as regions with enhanced electrochemical activity. The ESM activity is compared across a family of LSCO samples, demonstrating excellent agreement with macroscopic behaviors. This study potentially paves the way for deciphering the mechanisms of electrochemical activity of solids on the level of single extended structural defects such as grain boundaries and dislocations.",

keywords = "cobaltites, electrochemical activity, electrochemical strain microscopy, fuel cells, structural defects",

author = "Amit Kumar and Donovan Leonard and Stephen Jesse and Francesco Ciucci and Eliseev, {Eugene A.} and Morozovska, {Anna N.} and Biegalski, {Michael D.} and Christen, {Hans M.} and Alexander Tselev and Eva Mutoro and Crumlin, {Ethan J.} and Dane Morgan and Yang, {Shao Horn} and Albina Borisevich and Kalinin, {Sergei V.}",

year = "2013",

month = may,

day = "28",

doi = "10.1021/nn303239e",

language = "English",

volume = "7",

pages = "3808--3814",

journal = "ACS Nano",

issn = "1936-0851",

publisher = "American Chemical Society",

number = "5",

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Kumar, A, Leonard, D, Jesse, S, Ciucci, F, Eliseev, EA, Morozovska, AN, Biegalski, MD, Christen, HM, Tselev, A, Mutoro, E, Crumlin, EJ, Morgan, D, Yang, SH, Borisevich, A & Kalinin, SV 2013, 'Spatially resolved mapping of oxygen reduction/evolution reaction on solid-oxide fuel cell cathodes with sub-10 nm resolution', ACS Nano, vol. 7, no. 5, pp. 3808-3814. https://doi.org/10.1021/nn303239e

TY - JOUR

T1 - Spatially resolved mapping of oxygen reduction/evolution reaction on solid-oxide fuel cell cathodes with sub-10 nm resolution

AU - Kumar, Amit

AU - Leonard, Donovan

AU - Jesse, Stephen

AU - Ciucci, Francesco

AU - Eliseev, Eugene A.

AU - Morozovska, Anna N.

AU - Biegalski, Michael D.

AU - Christen, Hans M.

AU - Tselev, Alexander

AU - Mutoro, Eva

AU - Crumlin, Ethan J.

AU - Morgan, Dane

AU - Yang, Shao Horn

AU - Borisevich, Albina

AU - Kalinin, Sergei V.

PY - 2013/5/28

Y1 - 2013/5/28

N2 - Spatial localization of the oxygen reduction/evolution reactions on lanthanum strontium cobaltite (LSCO) surfaces with perovskite and layered perovskite structures is studied at the sub-10 nm level. Comparison between electrochemical strain microscopy (ESM) and structural imaging by scanning transmission electron microscopy (STEM) suggests that small-angle grain boundaries act as regions with enhanced electrochemical activity. The ESM activity is compared across a family of LSCO samples, demonstrating excellent agreement with macroscopic behaviors. This study potentially paves the way for deciphering the mechanisms of electrochemical activity of solids on the level of single extended structural defects such as grain boundaries and dislocations.

AB - Spatial localization of the oxygen reduction/evolution reactions on lanthanum strontium cobaltite (LSCO) surfaces with perovskite and layered perovskite structures is studied at the sub-10 nm level. Comparison between electrochemical strain microscopy (ESM) and structural imaging by scanning transmission electron microscopy (STEM) suggests that small-angle grain boundaries act as regions with enhanced electrochemical activity. The ESM activity is compared across a family of LSCO samples, demonstrating excellent agreement with macroscopic behaviors. This study potentially paves the way for deciphering the mechanisms of electrochemical activity of solids on the level of single extended structural defects such as grain boundaries and dislocations.

KW - cobaltites

KW - electrochemical activity

KW - electrochemical strain microscopy

KW - fuel cells

KW - structural defects

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U2 - 10.1021/nn303239e

DO - 10.1021/nn303239e

M3 - Article

C2 - 23565822

AN - SCOPUS:84878325767

SN - 1936-0851

VL - 7

SP - 3808

EP - 3814

JO - ACS Nano

JF - ACS Nano

IS - 5

ER -

Spatially resolved mapping of oxygen reduction/evolution reaction on solid-oxide fuel cell cathodes with sub-10 nm resolution

Abstract

Keywords

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