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Evaluation of Ca3Co2O6 as cathode material for high-performance solid-oxide fuel cell.

ABSTRACT: A cobalt-based thermoelectric compound Ca(3)Co(2)O(6) (CCO) has been developed as new cathode material with superior performance for intermediate-temperature (IT) solid-oxide fuel cell (SOFC). Systematic evaluation has been carried out. Measurement of thermal expansion coefficient (TEC), thermal-stress (?) and interfacial shearing stress (?) with the electrolyte show that CCO matches well with several commonly-used IT electrolytes. Maximum power density as high as 1.47 W cm(-2) is attained at 800°C, and an additional thermoelectric voltage of 11.7 mV is detected. The superior electrochemical performance, thermoelectric effect, and comparable thermal and mechanical behaviors with the electrolytes make CCO to be a promising cathode material for SOFC.

SUBMITTER: Wei T

PROVIDER: S-EPMC3553459 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Evaluation of Ca3Co2O6 as cathode material for high-performance solid-oxide fuel cell.

Wei Tao T Huang Yun-Hui YH Zeng Rui R Yuan Li-Xia LX Hu Xian-Luo XL Zhang Wu-Xing WX Jiang Long L Yang Jun-You JY Zhang Zhao-Liang ZL

Scientific reports 20130124

A cobalt-based thermoelectric compound Ca(3)Co(2)O(6) (CCO) has been developed as new cathode material with superior performance for intermediate-temperature (IT) solid-oxide fuel cell (SOFC). Systematic evaluation has been carried out. Measurement of thermal expansion coefficient (TEC), thermal-stress (σ) and interfacial shearing stress (τ) with the electrolyte show that CCO matches well with several commonly-used IT electrolytes. Maximum power density as high as 1.47 W cm(-2) is attained at 80 ...[more]

PMID: 23350032

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