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Updated: Aug 5, 2026

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
Published on: August 17, 2019
Electronic modulation of PtCo catalysts by topological carbon defects boosting durable oxygen reduction reaction in
Fengquan Li1, Yuan Liu2, Yan Dong1
1State Key Laboratory of Tropic Ocean Engineering Materials and Materials Evaluation, School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
Abstract:
Pt-carbon materials are identified as state-of-the-art electrocatalysts for oxygen reduction reaction (ORR). However, it is still a big challenge to reduce the usage of Pt while maintaining the high efficiency and durability of the catalysts. Herein, we report a topologicallly defective nanoparticle carbon (DPC) supported PtCo nanoparticles (PtCo NPs) catalyst (denoted as PtCo-DPC) with a low Pt loading for efficient ORR. The topological carbon defects with a low work function can serve as anchoring sites to trap and stabilize PtCo NPs for driving ORR. Meanwhile, the presence of topological carbon defects leads to the electron structure regulation and the lattice contraction for the PtCo NPs. The prepared PtCo-DPC demonstrates an increased half-wave potential (E1/2, 0.85 V vs. RHE) with a low Pt loading (4.74 µgPt cm-2) and delivers a superior mass activity (MA) with 1.02 A mgpt -1. Furthermore, the PtCo-DPC maintains a high stability after 100,000 cycles of accelerated durability test (ADT).
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