Simulation of Two-Dimensional Electrochemical Impedance Spectra of Solid Oxide Fuel Cells Using Transient Physical Models

2019 ◽  
Vol 35 (1) ◽  
pp. 871-881 ◽  
Author(s):  
Yixiang Shi ◽  
Hongjian Wang ◽  
Ningsheng Cai
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electrochemical Impedance ◽  
Solid Oxide ◽  
Physical Models ◽  
Oxide Fuel ◽  
Two Dimensional ◽  
Impedance Spectra ◽  
Electrochemical Impedance Spectra

scholarly journals Evaluating uncertainties in electrochemical impedance spectra of solid oxide fuel cells

2021 ◽  
Vol 298 ◽  
pp. 117101
Author(s):  
Luka Žnidarič ◽  
Gjorgji Nusev ◽  
Bertrand Morel ◽  
Julie Mougin ◽  
Đani Juričić ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electrochemical Impedance ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Impedance Spectra ◽  
Electrochemical Impedance Spectra

Synthesis and Properties of LST-X%Bi2O3 Anode Materials for Solid Oxide Fuel Cells

2011 ◽  
Vol 347-353 ◽  
pp. 3325-3329
Author(s):  
Xin Hui Zhang ◽  
Jie Zhang ◽  
Chao Yuan ◽  
Er Jun Liang
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Anode Materials ◽  
Electrochemical Impedance ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Electrochemical Impedance Spectra ◽  
Potential Applications ◽  
Sofc Anode ◽  
La Doped

Ceramic systems of template explains and demonstrates how to prepare your camera-ready Ceramic systems of Bi2O3 and La-doped SrTiO3 (LST) solid mixtures La0.2Sr0.8TiO3–x%Bi2O3 (x = 0, 20, 25, 30, 35) are prepared and explored as possible anode materials for solid oxide fuel cells. It is shown that the conductivity of La0.2Sr0.8TiO3–x%Bi2O3 composites increases from 0.15 to 1.4 S cm−1 in 97%H2 +3%H2O at 800°C with increasing the content of Bi2O3. Electrochemical impedance spectra indicated that the addition of Bi2O3 into LST can significantly reduce the fuel cell’s polarization and refine the grains and increase the triple phase boundary, leading to a better performance of the fuel cells. The results suggest potential applications of LST–x%Bi2O3 composite as SOFC anode materials.

scholarly journals Comparison of electrochemical impedance spectra for electrolyte-supported solid oxide fuel cells (SOFCs) and protonic ceramic fuel cells (PCFCs)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hirofumi Sumi ◽  
Hiroyuki Shimada ◽  
Yuki Yamaguchi ◽  
Yasunobu Mizutani ◽  
Yuji Okuyama ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electrochemical Impedance ◽  
Gas Diffusion ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Impedance Spectra ◽  
Cathode Polarization ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

AbstractProtonic ceramic fuel cells (PCFCs) are expected to achieve high power generation efficiency at intermediate temperature around 400–600 °C. In the present work, the distribution of relaxation times (DRT) analysis was investigated in order to deconvolute the anode and cathode polarization resistances for PCFCs supported on yttria-doped barium cerate (BCY) electrolyte in comparison with solid oxide fuel cells (SOFCs) supported on scandia-stabilized zirconia (ScSZ) electrolyte. Four DRT peaks were detected from the impedance spectra measured at 700 °C excluding the gas diffusion process for ScSZ and BCY. The DRT peaks at 5 × 102–1 × 104 Hz and 1 × 100–2 × 102 Hz were related to the hydrogen oxidation reaction at the anode and the oxygen reduction reaction at the cathode, respectively, for both cells. The DRT peak at 2 × 101–1 × 103 Hz depended on the hydrogen concentration at the anode for ScSZ, while it was dependent on the oxygen concentration at the cathode for BCY. Compared to ScSZ, steam was produced at the opposite electrode in the case of BCY, which enhanced the cathode polarization resistance for PCFCs.

Sign in / Sign up

Export Citation Format

Share Document