TY  - JOUR
AU  - SHENG, Yang
AU  - ZHOU, Xiaoliang
AU  - LIU, Limin
AU  - HE, Feifan
AU  - TANG, Yang
AU  - JIANG, Xingzhou
PY  - 2024
TI  - Preparation and Electrochemical Performance of Ni Doped Ba0.5Sr0.5(Co0.8Fe0.2)1-xNixO3-δ Cathodes for Proton Ceramic Fuel Cells
JO  - Journal of Ceramics
SN  - 2095-784X
SP  - 475
EP  - 482
VL  - 45
IS  - 3
AB  - The electrochemical performance of conventional mixed ionic-electronic conducting oxides Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF) in proton ceramic fuel cells (PCFCs) has been improved by using nickel doping strategy. A series of Ba0.5Sr0.5(Co0.8Fe0.2)1-xNixO3-δ samples were synthesized by using sol-gel method. Chemical compatibility and stability between the Ba0.5Sr0.5(Co0.8Fe0.2)0.9Ni0.1O3-δ (BSCFN10) cathode and the electrolyte BaZr0.1Ce0.7Y0.2O3-δ (BZCY) were studied, which was used in the PCFCs. Catalytic activity of the electrodes was evaluated by constructing a symmetric cell. It is showed that the BSCFN10 cathode has superior catalytic activity than BSCF. Peak power density of the BSCFN10 cathode was enhanced from 380 mW·cm-2 to 503 mW·cm-2 and the polarization impedance was reduced from 0.21 Ω·cm2 to 0.12 Ω·cm2, as compared with the undoped BSCF within a hydrogen atmosphere containing 3% water vapor at 700 ℃. In addition, the BSCFN10 electrode exhibited excellent operating stability at a current density of 0.4 A·cm-2, showcasing its potential for application in PCFCs.
UR  - https://doi.org/10.13957/j.cnki.tcxb.2024.03.005
DO  - 10.13957/j.cnki.tcxb.2024.03.005