Enhancing oxygen permeation of electronically short-circuited oxygen-ion conductors by decorating with mixed ionic-electronic conducting oxides

Lei Wang; Susumu Imashuku; Alexis Grimaud; Dongkyu Lee; Khaled Mezghani; Mohamed A. Habib; Yang Shao-Horn

doi:10.1149/2.002311eel

Enhancing oxygen permeation of electronically short-circuited oxygen-ion conductors by decorating with mixed ionic-electronic conducting oxides

Lei Wang
, Susumu Imashuku
, Alexis Grimaud
, Dongkyu Lee
, Khaled Mezghani
, Mohamed A. Habib
, Yang Shao-Horn^*

^*Corresponding author for this work

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

20 Scopus citations

Abstract

Reasonably high oxygen permeation fluxes, ∼4 × 10^-2 μmol.cm^-2.s^-1, were obtained from surface decoration with La_0.8Sr_0.2CoO_3-δ (LSC₁₁₃) or LaSrCoO4±δ (LSC₂₁₄) on La_0.8Sr _0.2Ga_0.8Mg_0.115Co_0.085O _3-δ (LSGMC) and Ce_0.8Sm_0.2O _2-δ (SDC) membranes at 700°C. Promoting surface exchange kinetics at the feed side of LSGMC and SDC membranes, which was found rate-limiting, is needed to further enhance oxygen permeation of these membranes. This work demonstrates the possibility of reducing the amount of noble metal usage for membranes based on the concept of short-circuited ion conductors and shows promise for the development of noble-metal-free permeation membranes.

Original language	English
Pages (from-to)	F77-F81
Journal	ECS Electrochemistry Letters
Volume	2
Issue number	11
DOIs	https://doi.org/10.1149/2.002311eel
State	Published - 2013

ASJC Scopus subject areas

Fuel Technology
Electrochemistry
Materials Chemistry

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title = "Enhancing oxygen permeation of electronically short-circuited oxygen-ion conductors by decorating with mixed ionic-electronic conducting oxides",

abstract = "Reasonably high oxygen permeation fluxes, ∼4 × 10-2 μmol.cm-2.s-1, were obtained from surface decoration with La0.8Sr0.2CoO3-δ (LSC113) or LaSrCoO4±δ (LSC214) on La0.8Sr 0.2Ga0.8Mg0.115Co0.085O 3-δ (LSGMC) and Ce0.8Sm0.2O 2-δ (SDC) membranes at 700°C. Promoting surface exchange kinetics at the feed side of LSGMC and SDC membranes, which was found rate-limiting, is needed to further enhance oxygen permeation of these membranes. This work demonstrates the possibility of reducing the amount of noble metal usage for membranes based on the concept of short-circuited ion conductors and shows promise for the development of noble-metal-free permeation membranes.",

author = "Lei Wang and Susumu Imashuku and Alexis Grimaud and Dongkyu Lee and Khaled Mezghani and Habib, \{Mohamed A.\} and Yang Shao-Horn",

year = "2013",

doi = "10.1149/2.002311eel",

language = "English",

volume = "2",

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journal = "ECS Electrochemistry Letters",

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TY - JOUR

T1 - Enhancing oxygen permeation of electronically short-circuited oxygen-ion conductors by decorating with mixed ionic-electronic conducting oxides

AU - Wang, Lei

AU - Imashuku, Susumu

AU - Grimaud, Alexis

AU - Lee, Dongkyu

AU - Mezghani, Khaled

AU - Habib, Mohamed A.

AU - Shao-Horn, Yang

PY - 2013

Y1 - 2013

N2 - Reasonably high oxygen permeation fluxes, ∼4 × 10-2 μmol.cm-2.s-1, were obtained from surface decoration with La0.8Sr0.2CoO3-δ (LSC113) or LaSrCoO4±δ (LSC214) on La0.8Sr 0.2Ga0.8Mg0.115Co0.085O 3-δ (LSGMC) and Ce0.8Sm0.2O 2-δ (SDC) membranes at 700°C. Promoting surface exchange kinetics at the feed side of LSGMC and SDC membranes, which was found rate-limiting, is needed to further enhance oxygen permeation of these membranes. This work demonstrates the possibility of reducing the amount of noble metal usage for membranes based on the concept of short-circuited ion conductors and shows promise for the development of noble-metal-free permeation membranes.

AB - Reasonably high oxygen permeation fluxes, ∼4 × 10-2 μmol.cm-2.s-1, were obtained from surface decoration with La0.8Sr0.2CoO3-δ (LSC113) or LaSrCoO4±δ (LSC214) on La0.8Sr 0.2Ga0.8Mg0.115Co0.085O 3-δ (LSGMC) and Ce0.8Sm0.2O 2-δ (SDC) membranes at 700°C. Promoting surface exchange kinetics at the feed side of LSGMC and SDC membranes, which was found rate-limiting, is needed to further enhance oxygen permeation of these membranes. This work demonstrates the possibility of reducing the amount of noble metal usage for membranes based on the concept of short-circuited ion conductors and shows promise for the development of noble-metal-free permeation membranes.

UR - https://www.scopus.com/pages/publications/84888390921

U2 - 10.1149/2.002311eel

DO - 10.1149/2.002311eel

M3 - Article

AN - SCOPUS:84888390921

SN - 2162-8726

VL - 2

SP - F77-F81

JO - ECS Electrochemistry Letters

JF - ECS Electrochemistry Letters

IS - 11

ER -

Enhancing oxygen permeation of electronically short-circuited oxygen-ion conductors by decorating with mixed ionic-electronic conducting oxides

Abstract

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