Abstract
AbstractAmong various types of alternative energy devices, solid oxide fuel cells (SOFCs) operating at low temperatures (300‐600°C) show the advantages for both stationary and mobile electricity production. Proton‐conducting oxides as electrolyte materials play a critical role in the low‐temperature SOFCs (LT‐SOFCs). This review summarizes progress in proton‐conducting solid oxide electrolytes for LT‐SOFCs from materials to devices, with emphases on (1) strategies that have been proposed to tune the structures and properties of proton‐conducting oxides and ceramics, (2) techniques that have been employed for improving the performance of the protonic ceramic‐based SOFCs (known as PCFCs), and (3) challenges and opportunities in the development of proton‐conducting electrolyte‐based PCFCs.
Highlights
The extraordinary concerns regarding the depletion of fossil fuel resources and the emission of greenhouse gases have promoted considerable research activities on clean, sustainable, and highly efficient energy conversion and storage technologies
Based on types of electrolytes, fuel cells have been classified into alkaline fuel cell (AFC), proton exchange membrane fuel cell (PEMFC), phosphoric acid fuel cell (PAFC), molten carbonate fuel cell (MCFC), and solid oxide fuel cell (SOFC).[1]
AFCs, PEMFCs, and PAFCs, which are operated at low temperatures (
Summary
The extraordinary concerns regarding the depletion of fossil fuel resources and the emission of greenhouse gases have promoted considerable research activities on clean, sustainable, and highly efficient energy conversion and storage technologies.
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