Influence of Carbon Dioxide and Humidity on the Stability of (La0.6Sr0.4)0.99Co1−xTixO3−δ  Cathode | Zendy

Alar Heinsaar | Zendy; Indrek Kivi | Zendy; Priit Möller | Zendy; Kuno Kooser | Zendy; Tanel Käämbre | Zendy; Jaan Aruväli | Zendy; Gunnar Nurk | Zendy; Enn Lust | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Influence of Carbon Dioxide and Humidity on the Stability of (La_0.6Sr_0.4)_0.99Co_1−xTi_xO_3−δ Cathode

Author(s) -

Alar Heinsaar,

Indrek Kivi,

Priit Möller,

Kuno Kooser,

Tanel Käämbre,

Jaan Aruväli,

Gunnar Nurk,

Enn Lust

Publication year - 2022

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/ac4a53

Subject(s) - x ray photoelectron spectroscopy , analytical chemistry (journal) , materials science , impurity , electrochemistry , dielectric spectroscopy , cathode , electrical resistivity and conductivity , electrode , chemistry , chemical engineering , electrical engineering , organic chemistry , chromatography , engineering

(La 0.6 Sr 0.4 ) 0.99 CoO 3− δ is a very promising cathode material due to its excellent electronic and ionic conductivity. However, non-artificial air from the ambient atmosphere contains impurities such as H 2 O and CO 2 , which cause degradation and performance loss of the cathode. Introduction of Ti into the B-site of (La 0.6 Sr 0.4 ) 0.99 CoO 3− δ improves the chemical stability of the material. (La 0.6 Sr 0.4 ) 0.99 Co 1−x Ti x O 3− δ (0 ≤ x ≥ 0.1) electrodes prepared in this work were analyzed using X-ray diffraction method (XRD), X-ray photoelectron spectroscopy (XPS), and electrochemical impedance spectroscopy (EIS). Studied (La 0.6 Sr 0.4 ) 0.99 CoO 3− δ materials with Ti in B-site showed reversible degradation under gas mixture with carbon dioxide addition. Improved stability was observed for (La 0.6 Sr 0.4 ) 0.99 Co 1−x Ti x O 3− δ materials with Ti in B-site compared to unmodified (La 0.6 Sr 0.4 ) 0.99 CoO 3− δ in gas mixture containing water vapour.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research