Engineering surface dipoles on mixed conducting oxides with ultra-thin oxide decoration layers

M Siebenhofer, A Nenning, C Rameshan… - Nature …, 2024 - nature.com
Improving materials for energy conversion and storage devices is deeply connected with an
optimization of their surfaces and surface modification is a promising strategy on the way to …

Reversal of chronic surface degradation of Sr (Ti, Fe) O3 perovskite-based fuel cell cathodes by surface acid/base engineering

HG Seo, H Kim, WC Jung, HL Tuller - Applied Catalysis B: Environment and …, 2024 - Elsevier
The major barrier to commercialization of solid oxide fuel cells (SOFCs) is to overcome long-
term surface degradation during operation. Sr/Co-based perovskite cathodes have been …

Proton surface exchange kinetics of perovskite triple conducting thin films for protonic ceramic electrolysis cells: BaPr 0.9 Y 0.1 O 3− δ (BPY) vs. Ba 1− x Co 0.4 Fe 0.4 …

J Lee, HB Buckner, NH Perry - Journal of Materials Chemistry A, 2024 - pubs.rsc.org
Protonic ceramic electrolysis cells (PCECs) are an attractive green H2 production
technology, given their intermediate-temperature operating range and ability to produce dry …

[HTML][HTML] Investigation of sub-nm binary oxidic surface modifications on mixed ionic electronic conductors with ToF-SIMS: Oxidic overlayer stability and ionic …

F Fahrnberger, M Siebenhofer, M Hahn, M Sauer… - Applied Surface …, 2025 - Elsevier
Modifications of mixed ionic electronic conductor (MIEC) surfaces are a promising approach
to improve oxygen exchange reaction (OER) kinetics and can have a tremendous impact on …

A New Method to Measure Oxygen Surface Exchange Kinetics On Porous Mixed Conducting Oxides With Simple Determination of Microstructure Parameters

C Nicollet, C Meyssonnier, S Guillonneau… - Small …, 2024 - Wiley Online Library
Oxygen exchange reaction on mixed conducting oxide is a critical reaction for many
applications, yet measuring its rate constant remains poorly reliable by standard techniques …

Surface electron modulation of metal oxide‐based electrochemical devices by surface additives—linking sensors and fuel cells

AF Staerz, HG Seo, HL Tuller - Journal of the American …, 2024 - Wiley Online Library
The interaction between ambient oxygen and the metal oxide surface is central to various
electrochemical devices. Solid oxide fuel cell cathodes and semiconducting metal oxide gas …

The effect of glass sealing stabilization on LSM–YSZ cathode poisoning and oxygen reduction reaction processes in solid oxide fuel cell

Z Shomali, P Alizadeh, H Abdoli - Journal of the American …, 2024 - Wiley Online Library
The perovskite structure and electrochemical activity of (La0. 80Sr0. 20) 0.95 MnO3− x–
(Y2O3) 0.08 (ZrO2) 0.92 (LSM–YSZ) composite cathode can be significantly affected by …

An Ideal Surface Reveals How Active It Is and Why It Degrades: Atomically Flat SrTi0. 5Fe0. 5O3-δ Model Thin Film–a Case Study

WC Jung, H Kim, J Liu, K Jang, B Koo, JK Kim, J Seo… - 2024 - researchsquare.com
Surface cation segregation, specifically strontium (Sr), has been identified as a primary
factor contributing to the performance degradation of perovskite-based oxide electrodes …

Recovery and Delay of Impurity-Induced Poisoning of Oxygen Exchange Kinetics in Mixed Conducting Oxides Via Controlled Surface Acidity

HG Seo, HL Tuller - ECS Transactions, 2023 - iopscience.iop.org
The oxygen exchange kinetics in mixed conducting oxide surfaces are critical to a variety of
energy-related technologies, including solid oxide fuel/electrolyzer cells (SOFCs/SOECs) …

Robust highly durable solid oxide fuel cell cathodes–Improved materials compatibility & self-regulating surface chemistry

HL Tuller, HG Seo - 2023 - osti.gov
Solid oxide fuel cells (SOFCs) are electrochemical conversion devices that directly transform
hydrogen or hydrocarbon fuels to electricity, with energy efficiencies as high as 90 …