Open AccessInterface Dynamic Investigation of Nitrogen Doped 3YSZ (3YSZ:N)
Author(s) -
Tao Liu,
Xu Shi,
Feifan Li,
Zhen Zhang,
JieHui Yu
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/ac5549
Subject(s) - cyclic voltammetry , electrochemistry , tafel equation , nitrogen , analytical chemistry (journal) , exchange current density , chemistry , polarization (electrochemistry) , materials science , diffusion , electrode , inorganic chemistry , thermodynamics , organic chemistry , physics
Y 2 O 3 stabilized zirconia (3YSZ, 3 mol%) and nitrogen doped 3YSZ (3YSZ:N) were prepared and characterized by cyclic voltammetry (CV), cathodic polarization and Tafel curve. Through electrochemical methods, the interface kinetic properties of the Pt/YSZ:N system and the reaction process of nitrogen have been studied. At low temperatures, O 2− undergo electrochemical reactions. Nitrogen ions show high reactivity above 650 °C. Nitrogen transfer occurred in at least two steps. First step was the loss of electrons from N 3− to obtain intermediate product, and second step was the loss of electrons from intermediate product to obtain nitrogen. Both reactions were controlled by diffusion, and apparent transfer coefficient of the reaction was calculated to be 0.39 and 0.27 with exchange current density of 2.59 × 10 −3 A·cm −2 .