Effect of Cl doping on the electrochemical performance of Sr2Fe1.5Mo0.5O6− cathode material for solid oxide fuel cells
Source abstract
Abstract
Abstract In this paper, a novel Cl− anion doping strategy is proposed to modify the electrochemical performance of Sr2Fe1.5Mo0.5O6−δ (SFM) cathode for solid oxide fuel cells. A series of Cl-doped Sr2Fe1.5Mo0.5O6−x−δClx (SFMClx, x = 0, 0.1, 0.2, 0.3, 0.4) materials is synthesized by the citric acid–glycine combustion method, and the effect of Cl doping on the crystal structure and electrochemical performance is systemically investigated. The doping of Cl into the SFM leads to the lattice expansion, and the electrochemical performance of Cl-doped SFMClx cathodes is effectively improved as a result of the enhanced mobility of lattice oxygen introduced by Cl doping. The optimal composition with x = 0.2 (sample Sr2Fe1.5Mo0.5O5.8−δCl0.2, noted as SFMCl0.2) exhibits a minimum polarization resistance Rp value of 1.987 Ω cm2 at 600 °C, reduced by 38.04% compared with the SFM cathode. These results suggest that Cl doping is an effective strategy to improve the electrochemical properties of cathode for solid oxide fuel cells.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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