Atomically Dispersed Zn/Co–N–C as ORR Electrocatalysts for Alkaline Fuel Cells

Hydrogen fuel cells have drawn increasing attention as one of the most promising next-generation power sources for future automotive transportation. Developing efficient, durable, and low-cost electrocatalysts, to accelerate the sluggish oxygen reduction reaction (ORR) kinetics, is urgently needed to advance fuel cell technologies. Herein, we report on metal–organic frameworks-derived nonprecious dual metal single-atom catalysts (SACs) (Zn/Co–N–C), consisting of Co–N4 and Zn–N4 local structures. These catalysts exhibited superior ORR activity with a half-wave potential (E1/2) of 0.938 V versus RHE (reversible hydrogen electrode) and robust stability (ΔE1/2 = −8.5 mV) after 50k electrochemical cycles. Moreover,…

• NS
  National Science Foundation

  Awards: DMR-1829070, DMR1719875, 1829070, DE-AC02-05CH11231
• UD
  U.S. Department of Energy

  Awards: -AC02-05CH11231, DMR-1829070, BES-ERCAP0022773, 05CH11231, DE-SC-0019445, AC02-05CH11231, DE-AC02, DE-AC02-05CH11231, DE-AC02-
• NE
  National Energy Research Scientific Computing Center

  Awards: 05CH11231, BES-ERCAP0022773, AC02-05CH11231
• OO
  Office of Science

  Awards: AC02-05CH11231, -AC02-05CH11231, DE-SC-0019445, DE-AC02
• CC
  Cornell Center for Materials Research

  Award: DMR1719875
• MR
  Materials Research Science and Engineering Center, Harvard University

  Awards: DE-AC02-05CH11231, DMR1719875
• DO
  Division of Materials Research

  Awards: DMR-1829070, 1829070
• EF
  Energy Frontier Research Centers

  Award: DE-SC-0019445