In this section, you can access to the latest technical information related to the FUTURE project topic.

Validating the efficiency of ?-Al2O3/La0.6Sr0.4Co0.2Fe0.8O3-? double-layer electrolyte for low temperature solid oxide fuel cell

Perovskite La0.6Sr0.4Co0.2Fe0.8O3+? (LSCF) as a promising cathode material possessed overwhelming electronic conduction along with certain ionic conductivity. Its strong electron conduction capability hinder the application of pure-phase LSCF as electrolyte in semiconductor membrane fuel cell (SMFC). In order to constrain the electron transport and take advantage of the decent ion conduction of LSCF, a thin layer of ?-Al2O3 with insulating property was added as an electron barrier layer and combine with LSCF to form a two-layer structure electrolyte. Through adjusting the weight ratio of LSCF/?-Al2O3 to optimize the thickness of double layers, an open circuit voltage of 0.98?V and a maximum power density of 690?mW/cm2 was received at 550??C. At the same time, SEM, EIS and other characterization technology had proven that the LSCF/?-Al2O3 bi-layer electrolyte can work efficiently at low temperature. The advantage of this work is the application of double-layer (?-Al2O3/LSCF) structure electrolyte to instead of mixed material electrolyte in low-temperature solid oxide fuel cells. Structural innovation and the using of insulating materials provided clues for the further development of SMFC.

» Author: Xiaomi Zhou, Dan Zheng, Chen Xia, Xunying Wang, Wenjing Dong, Bin Zhu, Baoyuan Wang

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