TY - JOUR
T1 - Effect of Cl doping on the electrochemical performance of Sr2Fe1.5Mo0.5O6−δ cathode material for solid oxide fuel cells
AU - Zhang, Yanli
AU - Zhu, Zongchao
AU - Gu, Yiheng
AU - Chen, Han
AU - Zheng, Yifeng
AU - Ge, Lin
N1 - Publisher Copyright:
© 2020 Elsevier Ltd and Techna Group S.r.l.
PY - 2020/10/1
Y1 - 2020/10/1
N2 - In this paper, a novel Cl− anion doping strategy is proposed to modify the electrochemical performance of Sr2Fe1.5Mo0.5O6−δ (SFM) cathode for solid oxide fuel cells. A series of Cl-doped Sr2Fe1.5Mo0.5O6−x−δClx (SFMClx, x = 0, 0.1, 0.2, 0.3, 0.4) materials is synthesized by the citric acid–glycine combustion method, and the effect of Cl doping on the crystal structure and electrochemical performance is systemically investigated. The doping of Cl into the SFM leads to the lattice expansion, and the electrochemical performance of Cl-doped SFMClx cathodes is effectively improved as a result of the enhanced mobility of lattice oxygen introduced by Cl doping. The optimal composition with x = 0.2 (sample Sr2Fe1.5Mo0.5O5.8−δCl0.2, noted as SFMCl0.2) exhibits a minimum polarization resistance Rp value of 1.987 Ωcm2 at 600 °C, reduced by 38.04% compared with the SFM cathode. These results suggest that Cl doping is an effective strategy to improve the electrochemical properties of cathode for solid oxide fuel cells.
AB - In this paper, a novel Cl− anion doping strategy is proposed to modify the electrochemical performance of Sr2Fe1.5Mo0.5O6−δ (SFM) cathode for solid oxide fuel cells. A series of Cl-doped Sr2Fe1.5Mo0.5O6−x−δClx (SFMClx, x = 0, 0.1, 0.2, 0.3, 0.4) materials is synthesized by the citric acid–glycine combustion method, and the effect of Cl doping on the crystal structure and electrochemical performance is systemically investigated. The doping of Cl into the SFM leads to the lattice expansion, and the electrochemical performance of Cl-doped SFMClx cathodes is effectively improved as a result of the enhanced mobility of lattice oxygen introduced by Cl doping. The optimal composition with x = 0.2 (sample Sr2Fe1.5Mo0.5O5.8−δCl0.2, noted as SFMCl0.2) exhibits a minimum polarization resistance Rp value of 1.987 Ωcm2 at 600 °C, reduced by 38.04% compared with the SFM cathode. These results suggest that Cl doping is an effective strategy to improve the electrochemical properties of cathode for solid oxide fuel cells.
KW - Cathode
KW - Chlorine doped SrFeMoO
KW - Electrochemical performance
KW - Solid oxide fuel cells
UR - http://www.scopus.com/inward/record.url?scp=85087060926&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2020.06.046
DO - 10.1016/j.ceramint.2020.06.046
M3 - 文章
AN - SCOPUS:85087060926
SN - 0272-8842
VL - 46
SP - 22787
EP - 22796
JO - Ceramics International
JF - Ceramics International
IS - 14
ER -