Influence of the discretization methods on the distribution of relaxation times deconvolution: implementing radial basis functions with DRTtools

TH Wan, M Saccoccio, C Chen, F Ciucci - Electrochimica Acta, 2015 - Elsevier
The distribution of relaxation times (DRT) is an approach that can extract time characteristics
of an electrochemical system from electrochemical impedance spectroscopy (EIS) …

Fast surface oxygen release kinetics accelerate nanoparticle exsolution in perovskite oxides

J Wang, D Kalaev, J Yang, I Waluyo… - Journal of the …, 2023 - ACS Publications
Exsolution is a recent advancement for fabricating oxide-supported metal nanoparticle
catalysts via phase precipitation out of a host oxide. A fundamental understanding and …

Investigation of surface Sr segregation in model thin film solid oxide fuel cell perovskite electrodes

WC Jung, HL Tuller - Energy & Environmental Science, 2012 - pubs.rsc.org
While SOFC perovskite oxide cathodes have been the subject of numerous studies, the
critical factors governing their kinetic behavior have remained poorly understood. This has …

Impact of Sr segregation on the electronic structure and oxygen reduction activity of SrTi 1− x Fe x O 3 surfaces

Y Chen, WC Jung, Z Cai, JJ Kim, HL Tuller… - Energy & Environmental …, 2012 - pubs.rsc.org
The correlation between the surface chemistry and electronic structure is studied for SrTi1−
xFexO3 (STF), as a model perovskite system, to explain the impact of Sr segregation on the …

Cobalt-substituted SrTi 0.3 Fe 0.7 O 3− δ: a stable high-performance oxygen electrode material for intermediate-temperature solid oxide electrochemical cells

SL Zhang, H Wang, MY Lu, AP Zhang… - Energy & …, 2018 - pubs.rsc.org
A key need in the development of solid oxide cells (SOCs) is for electrodes that promote fast
oxygen reduction and oxygen evolution reactions at reduced operating temperature (≤ 700° …

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 …

A New Model Describing Solid Oxide Fuel Cell Cathode Kinetics: Model Thin Film SrTi1‐xFexO3‐δ Mixed Conducting Oxides–a Case Study

WC Jung, HL Tuller - Advanced Energy Materials, 2011 - Wiley Online Library
Identifying the important factors governing the oxygen reduction kinetics at solid oxide fuel
cell cathodes is critical for enhanced performance, particularly at reduced temperatures. In …

In situ techniques reveal the true capabilities of SOFC cathode materials and their sudden degradation due to omnipresent sulfur trace impurities

C Riedl, M Siebenhofer, A Nenning… - Journal of Materials …, 2022 - pubs.rsc.org
In this study, five different mixed conducting cathode materials were grown as dense thin
films by pulsed laser deposition (PLD) and characterized via in situ impedance spectroscopy …

[HTML][HTML] Grain boundary segregation in iron doped strontium titanate: From dilute to concentrated solid solutions

D Jennings, MP Zahler, D Wang, Q Ma, W Deibert… - Acta Materialia, 2024 - Elsevier
Strontium titanate, a perovskite oxide, is a frequently studied material for a large variety of
applications. When acceptor-doped (with Fe, for example), the material is useful for its mixed …

Tunable Oxygen Diffusion and Electronic Conduction in SrTiO3 by Dislocation‐Induced Space Charge Fields

KK Adepalli, J Yang, J Maier… - Advanced Functional …, 2017 - Wiley Online Library
Plastic strain engineering was applied to induce controllable changes in electronic and
oxygen ion conductivity in oxides by orders of magnitude, without changing their nominal …