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Citation: Yuexia LI, Guodi CHEN, Jiani HE, Caiting JI, Yan SUN, Zhiyi ZHANG, Jianhuang ZENG. Oxygen reduction reaction performance and formation process mechanism on PtxCu1 3D nanoporous conductive networks via tuned inorganic salt self-assembly[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(10): 2203-2216. doi: 10.11862/CJIC.20260108 shu

Oxygen reduction reaction performance and formation process mechanism on PtxCu1 3D nanoporous conductive networks via tuned inorganic salt self-assembly

  • 1.

    School of Energy Engineering, Shanxi College of Technology, Shuozhou, Shanxi 036000, China

  • 2.

    Department of Automobile Engineering, Qingyuan Polytechnique, Qingyuan, Guangdong 511500, China

  • 3.

    School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China

Figures(7)

  • PtCu 3D nanoporous conductive networks (3D NCNs) with highly interconnected and interwoven structures were synthesized via a one-pot, surfactant-free, inorganic-salt-mediated self-assembly method. The role of inorganic salt ions in the formation mechanism of 3D NCNs and their effects on the structural characteristics and catalytic properties were investigated. The obtained best Pt3Cu1/C (using carbon as the carrier) NCNs possessed a large specific surface area, abundant low-coordinated edge and corner atoms, and enhanced oxygen reduction reaction (ORR) performance due to the synergistic effect of Pt-Cu alloying. The ORR mass activity (MA) of Pt3Cu1/C was approximately 2.6 times higher than that of commercial Pt/C catalysts. Furthermore, the Pt-rich shell formed during the dealloying process contributes to the improved stability of the catalyst. After 30 000 accelerated durability test cycles, Pt3Cu1/C retained 75% of its initial electrochemical surface area (ECSA), compared with 59% for the commercial Pt/C catalyst.
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