One-dimensional Sr0.7Y0.3CoO2.65−δ nanofibers as cathode material for IT-SOFCs

Fan, Liquan; Liu, Lianbao; Wang, Yuwei; Huo, Hua; Xiong, Yueping

doi:10.1016/j.ijhydene.2014.02.030

Cited by 17 publications

(1 citation statement)

References 38 publications

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“…Another approach is to maximize the reactive sites by manipulating the electrode’s microstructure. The electrospinning technology has been extensively utilized to fabricate nanofibers for electrodes with improved electrical connectivity and ultra-high porosity for transport of electrons and gases. − However, there is a thorny challenge regarding how to effectively transform the nanofibers to an efficient electrode with firm interfacial adhesion onto the electrolyte and no damage to the unique morphology of nanofibers, due to the mechanical fragility of nanofibers and the high tendency of thermally induced shrinkage and microstructural coarsening of nanofiber electrodes. − Lee et al reported that the poor bonding between a Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3−δ –Gd 0.1 Ce 0.9 O 1.95 composite nanofiber electrode and electrolyte resulted in a huge ohmic resistance of 24.61 Ω cm 2 at 700 °C …”

Section: Introductionmentioning

confidence: 99%

Facile Approach for Improving the Interfacial Adhesion of Nanofiber Air Electrodes of Reversible Solid Oxide Cells

Chen

Jiang

Yue

et al. 2023

ACS Appl. Mater. Interfaces

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Nanofibers have great promise as a highly active air electrode for reversible solid oxide cells (ReSOCs); however, one thorny issue is how to adhesively stick nanofibers to electrolyte with no damage to the original morphology. Herein, PrBa 0.8 Ca 0.2 Co 2 O 5+δ (PBCC) nanofibers are applied as an air electrode by a facile direct assembly approach that leads to the retention of most of the unique microstructure of nanofibers, and firm adhesion of the nanofiber electrode onto the electrolyte is achieved by applying electrochemical polarization. A single cell with the PBCC nanofiber air electrode exhibits excellent maximum power density (1.97 W cm −2 ), electrolysis performance (1.3 A cm −2 at 1.3 V), and operating stability at 750 °C for 200 h. These findings provide a facile means for the utilization of nanofiber electrodes for high-performance and durable ReSOCs.

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