Semiconductor Heterostructure SrTiO3/CeO2 Electrolyte Membrane Fuel Cells
Source abstract
Abstract
Semiconductor heterostructure SrTiO 3 /CeO 2 (STO/CeO 2 ) membrane was used as the electrolyte material of low-temperature solid oxide fuel cells. This STO/CeO 2 membrane demonstrated a high ionic conductivity of 0.24 S cm −1 under fuel cell conditions at 550°C, and also its fuel cell delivered a maximum power output of 745.6 mW cm −2 at the same temperature. Moreover, the high electronic conductivity of CeO 2 is blocked by the STO/CeO 2 semiconductor heterojunction, thus resulting in the open circuit voltage increasing from 0.90 to 1.09 V at 550°C. The semiconductor heterointerface is found to play an important role in inhibiting the electron transfer between CeO 2 particles. Thus, this work makes it feasibility of using semiconductor materials as the electrolyte by constructing heterojunctions to suppress the electronic conductivity.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Fuel Cells and Related Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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