| Autor: |
Xing, Yueming, Hu, Enyi, Wang, Faze, Muhammad, Naveed, Wang, Baoyuan, Wang, Jun, Maryam, Ammara, Rasheed, Muhammad Naveed, Asghar, Muhammad, Xia, Chen, Yun, Sining, Zhu, Bin |
| Předmět: |
|
| Zdroj: |
Applied Physics Letters; 10/19/2020, Vol. 117 Issue 16, p1-7, 7p |
| Abstrakt: |
Multifunctional semiconductor cubic silicon carbide (3C-SiC) is employed for fuel cell electrolyte, which has never been used before. n-type 3C-SiC can be individually employed as the electrolyte in fuel cells, but delivers insufficient open circuit voltage and minuscule current density due to its electronic dominant property. By introducing n-type ZnO to form an n–n 3C-SiC/ZnO heterostructure, significant enhancements in the ionic conductivity of 0.12 S/cm and fuel cell performance of 270 mW cm−2 are achieved at 550 °C. It is found that the energy band bending and build-in electric field of the heterostructure play the pivotal role in the ionic transport and suppressing the electronic conduction of 3C-SiC, leading to a markable material ionic property and fuel cell performance. These findings suggest that 3C-SiC can be tuned to ionic conducting electrolyte for fuel cell applications through the heterostructure approach and energy band alignment methodology. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
