Modulation of Mixed Conductivity in Nanocrystalline Electrolytes by Heterogeneous Doping

2019 ◽  
Vol 16 (51) ◽  
pp. 3-12 ◽  
Author(s):  
Scott Litzelman ◽  
Harry L. Tuller
Keyword(s):  
Mixed Conductivity ◽  
Heterogeneous Doping

scholarly journals Heterogeneous Doping to Improve the Performance of Thin-Film Hematite Photoanodes for Solar Water Splitting

2016 ◽  
Vol 1 (4) ◽  
pp. 827-833 ◽  
Author(s):  
Asaf Kay ◽  
Daniel A. Grave ◽  
David S. Ellis ◽  
Hen Dotan ◽  
Avner Rothschild
Keyword(s):  
Thin Film ◽  
Water Splitting ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Heterogeneous Doping

Synthesis and Electrical Transport Property of Sr and Cu-Doped LaFeO3-Based Cathode Material for IT-SOFC

2013 ◽  
Vol 710 ◽  
pp. 33-36
Author(s):  
Jie Zhao ◽  
Jiang Fu ◽  
Yong Fu ◽  
Yong Chang Ma
Keyword(s):  
Cathode Material ◽  
Electrical Transport ◽  
High Performance ◽  
Small Polaron ◽  
Negative Temperature ◽  
Rare Earth Oxide ◽  
Intermediate Temperature ◽  
Charge Balance ◽  
Mixed Conductivity ◽  
Polaron Hopping

In order to accelerate the commercialization of SOFCs technology, the key is the development of high performance cathode materials operated at intermediate temperature. Sr and Cu doped rare earth oxide La1-xSrxFe1-yCu.yO3-δ (x=0.1, 0.3 ; y=0.1, 0.2, denoted as LSFCu-11, LSFCu-31 and LSFCu-32 ) were synthesized by solid state reaction method (SSR). The formation process, phase structure and microstructure of the synthesized samples were characterized using TG/DSC, XRD and SEM. The thermal expansion coefficients (TEC) of the samples were analyzed by thermal dilatometry. The electrical conductivities of the samples were measured with DC four-terminal method from 25 to 950 °C. The results indicate that the samples exhibit a single phase with orthorhombic and hexagonal perovskite structure after sintered at 1200 °C for 4h. The electrical conductivity of the samples increases with temperature up to a maximum value, and then decreases gradually. The small polaron hopping is regarded as the conducting mechanism for synthesized samples at T 550 °C. The negative temperature dependence occurring at higher temperature is due to the creation of oxygen vacancies for charge balance. LSFCu-32 has higher mixed conductivity (> 100 S·cm-1) at intermediate temperature and can meet the demand of cathode material for IT-SOFC. In addition, the average TECs of LSFCu-11, LSFCu-31 and LSFCu-32 are 1.22 × 10-6 K-1 , 1.30 × 10-6 K-1 and 1.34 × 10-6 K-1 respectively.

scholarly journals In situ synthesis of supported metal nanocatalysts through heterogeneous doping

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
No Woo Kwak ◽  
Seung Jin Jeong ◽  
Han Gil Seo ◽  
Siwon Lee ◽  
YeonJu Kim ◽  
...  
Keyword(s):  
In Situ Synthesis ◽  
Heterogeneous Doping ◽  
Supported Metal

Mixed conductivity of garnet phases based on gadolinium ferrite

2004 ◽  
Vol 24 (6) ◽  
pp. 1309-1312 ◽  
Author(s):  
A.L. Shaula ◽  
V.V. Kharton ◽  
F.M.B. Marques
Keyword(s):  
Mixed Conductivity

Influence of constituent metal cations in substituted LaCoO3 on mixed conductivity and oxygen permeability

1991 ◽  
Vol 48 (3-4) ◽  
pp. 207-212 ◽  
Author(s):  
Y TERAOKA ◽  
T NOBUNAGA ◽  
K OKAMOTO ◽  
N MIURA ◽  
N YAMAZOE
Keyword(s):  
Oxygen Permeability ◽  
Metal Cations ◽  
Mixed Conductivity

New Mixed Conductivity Mechanisms in the Cold Plasma Device Based on Silver-Modified Zeolite Microporous Electronic Materials

2018 ◽  
Vol 47 (5) ◽  
pp. 2791-2799 ◽  
Author(s):  
Sevgul Ozturk Koç ◽  
Sezin Galioglu ◽  
Seckin Ozturk ◽  
Burcu Akata Kurç ◽  
Emrah Koç ◽  
...  
Keyword(s):  
Cold Plasma ◽  
Electronic Materials ◽  
Mixed Conductivity ◽  
Modified Zeolite ◽  
Plasma Device
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