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Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
Published on: June 21, 2017
High Pt utilization PEMFC electrode obtained by alternative ion-exchange/electrodeposition
Siguo Chen1, Zidong Wei, Hua Li
1The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China.
Chemical Communications (Cambridge, England)
|October 22, 2010
Summary
This study introduces an alternative ion-exchange/electrodeposition (AIEE) technique for preparing high platinum (Pt) utilization electrodes in proton-exchange membrane fuel cells (PEMFCs). AIEE electrodes show significantly enhanced performance compared to conventional methods.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Conversion
Background:
- Proton-exchange membrane fuel cells (PEMFCs) are crucial for clean energy.
- Improving platinum (Pt) utilization in PEMFC electrodes is key to reducing costs and enhancing efficiency.
- Conventional electrode fabrication methods often lead to suboptimal Pt distribution and performance.
Purpose of the Study:
- To develop and evaluate an alternative ion-exchange/electrodeposition (AIEE) technique for fabricating high Pt utilization PEMFC electrodes.
- To compare the performance of AIEE electrodes against conventional Nafion-bonded Pt/C electrodes.
- To demonstrate the potential of AIEE for cost-effective and high-performance fuel cell components.
Main Methods:
- Fabrication of PEMFC electrodes using the alternative ion-exchange/electrodeposition (AIEE) technique.
- Characterization of electrode properties and Pt loading.
- Performance testing of Membrane Electrode Assemblies (MEAs) employing AIEE electrodes and conventional electrodes under identical Pt loading conditions.
Main Results:
- The AIEE technique successfully produced PEMFC electrodes with high Pt utilization.
- MEAs utilizing AIEE electrodes (0.014 mg Pt cm(-2)) demonstrated performance approximately 2.2 times greater than those with conventional Nafion-bonded Pt/C electrodes at the same Pt loading.
- This indicates a significant improvement in electrochemical performance and Pt efficiency.
Conclusions:
- The alternative ion-exchange/electrodeposition (AIEE) technique offers a superior method for preparing PEMFC electrodes.
- AIEE significantly enhances electrode performance and platinum utilization compared to conventional approaches.
- This advancement holds promise for more efficient and economical proton-exchange membrane fuel cell technology.
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