Citation: Fang Guan, Xiaomin Zhang, Yuefeng Song, Yingjie Zhou, Guoxiong Wang, Xinhe Bao. Effect of Gd_0.2Ce_0.8O_1.9 nanoparticles on the oxygen evolution reaction of La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ anode in solid oxide electrolysis cell[J]. Chinese Journal of Catalysis, ;2018, 39(9): 1484-1492. doi: 10.1016/S1872-2067(18)63118-3 shu

Effect of Gd_0.2Ce_0.8O_1.9 nanoparticles on the oxygen evolution reaction of La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ anode in solid oxide electrolysis cell

Fang Guan ^a,b,c, ,
Xiaomin Zhang ^a,b ,
Yuefeng Song ^a,b,c ,
Yingjie Zhou ^a,b ,
Guoxiong Wang ^a,b ,
Xinhe Bao ^a,b

a State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
b Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
c University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 29 May 2018
Revised Date: 6 June 2018

Fund Project: This work was supported by the National Key R&D Program of China (2017YFA0700102), the National Natural Science Foundation of China (21703237, 21573222, 91545202), Dalian Institute of Chemical Physics (DICP DMTO201702), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB17020200) and CAS Youth Innovation Promotion (2015145).

La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ (LSCF) anodes were infiltrated by Gd_0.2Ce_0.8O_1.9 (GDC) nanoparticles to improve the oxygen evolution reaction (OER) performance of solid oxide electrolysis cells (SOECs) in CO₂ electroreduction. The effect of GDC loading was investigated, and 10 wt% GDC nanoparticle infiltration of the LSCF (10GDC/LSCF) anode results in the highest OER performance. Electrochemical impedance spectra measurements indicate that the infiltration by GDC nanoparticles greatly decreases the polarization resistance of the SOECs with the 10GDC/LSCF anodes. The following distribution of relaxation time analysis suggests that four individual electrode processes are involved in the OER and that all of them are accelerated on the 10GDC/LSCF anode. Three phase boundaries, surface oxygen vacancies, and bulk oxygen mobility increased, based on scanning electron microscopy and temperature-programmed desorption of O₂ characterizations, and contributed to the enhancement of the four electrode processes of the OER and electrochemical performance of SOECs.
- Gd_0.2Ce_0.8O_1.9nanoparticles,
- La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ anode,
- Oxygen evolution reaction,
- Three phase boundaries,
- Solid oxide electrolysis cell
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Effect of Gd0.2Ce0.8O1.9 nanoparticles on the oxygen evolution reaction of La0.6Sr0.4Co0.2Fe0.8O3-δ anode in solid oxide electrolysis cell

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通讯作者: 陈斌, bchen63@163.com

Effect of Gd_0.2Ce_0.8O_1.9 nanoparticles on the oxygen evolution reaction of La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ anode in solid oxide electrolysis cell