| Autor: |
Zhou, Yangdong, Wang, Ning, Xing, Lixin, Zhang, Xiting, Zhong, Ruyi, Peng, Yuqin, Chen, Yue, Ye, Siyu, Xie, Xiaohong, Du, Lei |
| Zdroj: |
Chem Catalysis; February 2023, Vol. 3 Issue: 2 |
| Abstrakt: |
Proton exchange membrane (PEM) fuel cells are high-efficiency, clean energy devices that require highly active and stable catalysts for, particularly, the oxygen reduction reaction (ORR) at the cathode. Platinum-group metals (PGMs) are currently the most used ORR catalysts; the high cost and scarce resources of PGMs, however, preclude their practical application. Significant efforts have thus been made in developing both low-PGM (LP) and PGM-free (PF) ORR catalysts, yet the coupling of LP and PF to form composite LP/PF ORR catalysts has been rarely explored. When LP and PF are coupled, beneficial structural and electronic modifications in catalysts could actually be induced from some complementary aspects, allowing a simultaneous enhancement in both the activity and stability of LP/PF ORR catalysts. Based on the milestones and challenges of LP and PF catalysts and the recent research progress on LP/PF catalysts, the coupling (synergistic) effects of LP/PF catalysts are summarized herein, in terms of enhanced intrinsic activity and stability. The perspectives for the future R&D of ORR catalysts through LP and PF coupling are also provided. |
| Databáze: |
Supplemental Index |
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