Related Experiment Video
Updated: May 12, 2025

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
Published on: March 19, 2017
Progress in understanding triple ionic-electronic conduction in perovskite oxides for protonic ceramic fuel cell
Desheng Feng1, Zhonghua Zhu2, Dan Li1,3
1Department of Chemical Engineering, the University of Melbourne, Melbourne, 3010, Australia. desheng.feng@unimelb.edu.au.
Abstract:
Protonic ceramic fuel cells offer a promising route to effectively generate electricity from various fuels at reduced temperatures. However, the viability of this technology is impeded by the sluggish kinetics of the oxygen reduction reaction at the cathode. Recently, triple ionic-electronic conductors have shown their promise as cathode materials with improved catalytic activity because of their enhanced mixed electron and ionic conductivities that can maximise the active sites for the reaction. This review examines the transport mechanism of holes, oxygen ions, and protons within triple ionic-electronic conductors. This review highlights the equilibrium among these charge carriers and their requirement for specific cationic environments to facilitate rapid transport. As a result, triple ionic-electronic conductors need to balance the transport of these charges to realise optimum oxygen reduction reaction activity. The review further identifies the transport of oxygen ions or protons as the current limiting factor in triple ionic-electronic conductors. This review concludes by emphasizing the importance of understanding the role of ionic transport in the oxygen reduction reaction to enhance the performance of triple ionic-electronic conductors.
More Related Videos
Related Concept Videos
Electrolysis
Batteries and Fuel Cells
Classification of Elements and Compounds
Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...
Alkali Metals
Table 1: Properties of the alkali metals
Concentration Cells
Consider the following voltaic cell:
Standard Electrode Potentials

