Rational Design of a High-Durability Pt-Based ORR Catalyst Supported on Mn/N Codoped Carbon Sheets for PEMFCs

Qinghua Shu, Jun Zhang, Bin Hu, Xiang Deng, Jinglin Yuan, Ran Ran, Wei Zhou, Zongping Shao

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The high cost and poor durability of the catalysts for oxygen reduction reaction (ORR) remain two stumbling blocks to the broad commercialization of proton exchange membrane fuel cells (PEMFCs). Herein, novel two-dimensional (2D)-structured carbon sheets with high specific surface areas and Mn-Nx sites are rationally designed and synthesized with a facile method. Also, after being coupled with the highly dispersed Pt nanoparticles, the carbon composite with dual ORR active sites [Pt/(Mn-N)@C] successfully outperforms the commercialized Pt/C in both mass activity (0.50 A mgPt-1) and specific activity (0.54 mA cmPt-1). Meanwhile, it maintains outstanding durability after 30,000 cycles of an accelerated durability test with a performance loss of only 14.1 %. Furthermore, the excellent performance (1.18 W cm-2) revealed in the single-cell configuration demonstrates the promising application of Pt/(Mn-N)@C in PEMFCs.

Original languageEnglish
Pages (from-to)1707-1715
Number of pages9
JournalEnergy and Fuels
Volume36
Issue number3
DOIs
StatePublished - 3 Feb 2022

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