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Updated: Feb 18, 2026

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

Defects and Interfaces on PtPb Nanoplates Boost Fuel Cell Electrocatalysis.

Yingjun Sun^1,2, Yanxia Liang³, Mingchuan Luo¹

¹Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.

Small (Weinheim an Der Bergstrasse, Germany)

|November 23, 2017

Summary

This study introduces ion irradiation to tune defects and interfaces in platinum-lead (PtPb) nanoplates, significantly boosting fuel cell catalysis for methanol oxidation, ethanol oxidation, and oxygen reduction reactions.

Keywords:

PtPb nanoplates defects fuel cells interfaces irradiation

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Last Updated: Feb 18, 2026

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Area of Science:

Materials Science
Electrochemistry
Catalysis

Background:

Nanostructured platinum (Pt) is crucial for fuel cell technology.
Optimizing Pt-based alloys for enhanced electrocatalytic activity is an ongoing challenge.
Current methods for maximizing Pt utilization efficiency are limited.

Purpose of the Study:

To develop a novel strategy for enhancing fuel cell catalysis.
To investigate the role of defects and interfaces in PtPb nanoplates.
To maximize Pt utilization efficiency through controlled defect engineering.

Main Methods:

Utilizing ion irradiation to introduce and control defects in PtPb nanoplates.
Tuning defect and interface properties by varying ion irradiation fluence.
Characterizing electrocatalytic activity for methanol oxidation reaction (MOR), ethanol oxidation reaction (EOR), and oxygen reduction reaction (ORR).

Main Results:

PtPb nanoplates exhibit volcano-like electrocatalytic activity dependent on ion irradiation fluence.
Optimized nanoplates with dislocations, subgrain boundaries, and amorphous domains show peak activity.
High catalytic stability was maintained in acidic conditions.

Conclusions:

Controlling defects and interfaces via ion irradiation is a powerful strategy to enhance Pt-based nanocatalyst performance.
This approach significantly boosts electrocatalytic activity for key fuel cell reactions.
The findings pave the way for more efficient fuel cell catalysts.