High oxygen vacancy concentration and improved electrical conductivity in tetragonal LaNbO4 stabilized by Ga and Mo Co-do** on the Nb site

X Duan, S Wu, J Hao, L He, C Lou, M Tang, X Deng… - Acta Materialia, 2024 - Elsevier
The LaNbO 4-based materials were well documented to be good ionic conductors with the
charge carriers of protons or interstitial oxygen ions. Herein, for the first time, we reported …

Effect of isovalent substitution of La3+ in Ca-doped LaNbO4 on the thermal and electrical properties

L Hakimova, A Kasyanova, A Farlenkov… - Ceramics …, 2019 - Elsevier
The effect of the equimolar substitution of lanthanum in Ca-doped LaNbO 4 on the
functionality of (La 0.5 Ln 0.5) 0.99 Сa 0.01 NbO 4–δ (where Ln= La, Nd and Sm) is …

A reduced order model of proton conducting Solid Oxide Fuel Cell: A proposal

J Milewski, A Szczęśniak - Energy Conversion and Management, 2021 - Elsevier
The aim of this study is to develop a new approach for modeling the voltage of H-SOFC. The
proposed 0-D model collects electrochemical, thermal, electrical and flow parameters. The …

Praseodymium orthoniobate and praseodymium substituted lanthanum orthoniobate: electrical and structural properties

K Dzierzgowski, S Wachowski, M Łapiński… - Materials, 2022 - mdpi.com
In this paper, the structural properties and the electrical conductivity of La1− xPrxNbO4+ δ
(x= 0.00, 0.05, 0.1, 0.15, 0.2, 0.3) and PrNbO4+ δ are presented and discussed. All …

A discussion on mathematical models of proton conducting solid oxide fuel cells

J Milewski, A Szczęśniak, L Szablowski - International Journal of Hydrogen …, 2019 - Elsevier
The paper presents a comparison of the models currently used in relation to the available
experimental data. The review highlights the main causes of discrepancies between the …

High‐Temperature Proton Conduction in LaSbO4

P Winiarz, K Dzierzgowski… - … A European Journal, 2021 - Wiley Online Library
Lanthanum orthoantimonate was synthesized using a solid‐state synthesis method. To
enhance the possible protonic conductivity, samples with the addition of 1 mol% Ca in La …

Electrical properties of A-site Ca-doped LaNb1-xAsxO4-δ ceramics

P Winiarz, M Gazda, A Dawczak, SL Wachowski - Solid State Ionics, 2024 - Elsevier
The electrical properties of A-site Ca-doped LaNbO 4 with the addition of As in the B-site,
have been investigated. Total, grain-and specific grain boundary electric conductivities in …

Terbium substituted lanthanum orthoniobate: electrical and structural properties

K Dzierzgowski, S Wachowski, M Gazda… - Crystals, 2019 - mdpi.com
The results of electrical conductivity studies, structural measurements and thermogravimetric
analysis of La1− xTbxNbO4+ δ (x= 0.00, 0.05, 0.1, 0.15, 0.2, 0.3) are presented and …

Crystal structure and dielectric properties of Ln2Ti2SiO9 (Ln= Pr and Nd)

N Kumar, KS Rao, AK Sahu, SK Deshpande… - Materials Today …, 2024 - Elsevier
Low loss and high dielectric constant materials are essentially desired for wide varieties of
applications in electronics and communication technology. Herein the structure and …

Fergusonite–Scheelite phase transition of praseodymium orthoniobate

GE Nikiforova, AV Khoroshilov, KS Gavrichev… - Inorganic Materials, 2019 - Springer
Polycrystalline praseodymium orthoniobate, PrNbO 4, has been studied by high-
temperature X‑ray diffraction and differential scanning calorimetry. We have determined the …