In-situ growth of iron phosphide encapsulated by carbon nanotubes decorated with zeolitic imidazolate framework-8 for enhancing oxygen reduction reaction |
| |
| Affiliation: | 1. Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 106335, Taiwan;2. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan;3. Global Development Engineering Program, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan |
| |
| Abstract: | A non-precious metal electrocatalyst was obtained through the in-situ growth of iron phosphide (Fe2P) encapsulated by carbon nanotubes (CNTs) decorated with zeolitic imidazolate framework-8 (ZIF-8). Upon pyrolysis at a specific temperature, the ZIF-8/Fe2P@CNT catalyst exhibits high oxygen reduction reaction (ORR) ability and is close to the ideal electron transfer, which number is 3.99. The structure, high number of nitrogen-containing functional groups, and suitable surface properties of ZIF-8/Fe2P@CNT are critical for enhancing the ORR activity. ZIF-8/Fe2P@CNT exhibits a decay in electrocatalytic activity of 26 mV in the half-wave potential after 30 000 cycles, which is considerably superior to the decay of 123 mV for Pt/C after the same number of cycles. Therefore, ZIF-8/Fe2P@CNT exhibits excellent ORR activity and long-term stability and can be used as a fuel cell catalyst. |
| |
| Keywords: | Fuel cell Oxygen reduction reaction Zeolitic imidazolate framework-8 Carbon nanotube Iron phosphide |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
