Вышедшие номера
Ruddlesden--Popper type La1.5-xEuxPr0.5Ni0.9Cu0.1O4+delta as a Potential Cathode Material for H-SOFCs
Wu C.H.1, Shi Y.J.1, Lu F.1, Jia X.S.1, Su J.R.1, He H.1, Cai B.1
1Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, China
Email: bcai@zzu.edu.cn
Поступила в редакцию: 11 декабря 2020 г.
Выставление онлайн: 10 февраля 2021 г.

As a potential cathode material, the La1.5-xEuxPr0.5Ni0.9Cu0.1O4+delta (LEPNC-x, x=0, 0.1, 0.2, 0.3, 0.4, 0.6, and 0.8) oxide is synthesized and studied. A pure Ruddlesden-Popper (R-P) type K2NiF4 structure can only be obtained for x=0.4 and lower. The thermal expansion coefficient (TEC) of Eu-doped LEPNC-x stays almost constant with temperature, and decreases with increasing x. The optimal electrochemical performance of NiO-BZCY|BZCY|LEPNC-x single cells can be achieved for x=0.2, although the corresponding electrical conductivity is the lowest. The result ofelectrochemical impedance spectra (EIS) also confirms this conclusion. EIS analysis suggests that the pre-exponential factor and activation energy of polarization resistance should be mainly determined by the electrical conductivity and oxygen ion diffusion of cathode material, respectively. Keywords: K2NiF4 cathode, Eu doping, electrical conductivity, thermal expansion coefficient, H-SOFC.

Подсчитывается количество просмотров абстрактов ("html" на диаграммах) и полных версий статей ("pdf"). Просмотры с одинаковых IP-адресов засчитываются, если происходят с интервалом не менее 2-х часов.

Дата начала обработки статистических данных - 27 января 2016 г.