Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7705471 | International Journal of Hydrogen Energy | 2018 | 9 Pages |
Abstract
Novel Sm2O3âNiO composite was prepared as the functional electrolyte for the first time. The total electrical conductivity of Sm2O3âNiO is 0.38 S cmâ1 in H2/air condition at 550 °C. High performance, e.g. 718 mW cmâ2, was achieved using Sm2O3âNiO composite as an electrolyte of solid oxide fuel cells operated at 550 °C. The electrical properties and electrochemical performance are strongly depended on Sm2O3 and NiO constituent phase of the compositions. Notably, surprisingly high ionic conductivity and fuel cell performance are achieved using the composite system constituting with insulating Sm2O3 and intrinsic p-type conductive NiO with a low conductivity of 4 Ã 10â3 S cmâ1. The interfacial ionic conduction between two phases is a dominating factor giving rise to significantly enhanced proton conduction. Fuel cell performance and further ionic conduction mechanisms are under investigation.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Liang Liu, Yanyan Liu, Lingyao Li, Yan Wu, Manish Singh, Bin Zhu,