Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7705489 | International Journal of Hydrogen Energy | 2018 | 8 Pages |
Abstract
The flower-shaped ZnO was synthesized to form composite with the delafossite structure CuFeO2. The composite heterojunction formed for the ZnO-CuFeO2 composite material demonstrates a profound significance for exploring novel materials in solid oxide fuel cell (SOFC) field. At 550 °C, power outputs of 300 mW cmâ2 and 468 mW cmâ2 were achieved for SOFC devices using pure ZnO and composite with CuFeO2 as the electrolytes, respectively. The composite showed a good performance at low temperatures, for instance, it showed a power output of 148 mW cmâ2 at 430 °C. The studies on photocurrent-time curves with visible light on/off irradiation provided an evidence for electron-hole separation. The heterojunctions separate holes and electrons, preventing short-circuiting while used in the SOFC device. These results demonstrate that introducing the heterojunctions in the electrolyte is an innovative approach for advanced SOFCs.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Jing Zhang, Huaibing Song, Rong Xu, Chunjie Yan, Yan Wu,