Citation: Zou Ying, Wang Hongtao, Sheng Liangquan. Intermediate Temperature Fuel Cell Performance of the Composite Electrolyte Ce_0.8Gd_0.2O_2-α-(Li/K)₂CO₃[J]. Chemistry, ;2017, 80(6): 558-562. shu

Intermediate Temperature Fuel Cell Performance of the Composite Electrolyte Ce_0.8Gd_0.2O_2-α-(Li/K)₂CO₃

Anhui Provincial Key Laboratory for Degradation and Monitoring of Pollution of the Environment, School of Chemical and Material Engineering, Fuyang Teachers College, Fuyang 236037

Corresponding author: Wang Hongtao, hongtaoking3@163.com
Received Date: 19 December 2016
Accepted Date: 6 February 2017

Figures(7)

Ce_0.8Gd_0.2O_2-α was synthesized by sol-gel method at 900℃, which is much lower than the conventional sintering temperature (1400℃), and was further compounded with (Li/K)₂CO₃. The XRD pattern showed that there is no chemical reaction between Ce_0.8Gd_0.2O_2-α and (Li/K)₂CO₃. The SEM images demonstrated that the composite electrolyte is sufficiently dense and does not have holes. The conductivities of the composite electrolyte in dry nitrogen atmosphere were measured using electrochemical analyzer. The highest conductivity was observed to be 6.4×10^-2 S·cm^-1 at 600℃, which is higher than that of single CeO₂ material. The H₂/O₂ fuel cell performance test showed that the electrolyte impedance and polarization impedance under open-circuit condition are 2.7Ω and 0.8Ω, respectively, and the maximum output power density is 267mW·cm^-2 at 600℃.
- CeO₂,
- Composite,
- Electrolyte,
- Fuel cell,
- Conductivity
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沈阳化工大学材料科学与工程学院沈阳 110142

Intermediate Temperature Fuel Cell Performance of the Composite Electrolyte Ce0.8Gd0.2O2-α-(Li/K)2CO3

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通讯作者: 陈斌, bchen63@163.com

Intermediate Temperature Fuel Cell Performance of the Composite Electrolyte Ce_0.8Gd_0.2O_2-α-(Li/K)₂CO₃