Electrospun One-Dimensional Electrocatalysts for Oxygen Reduction Reaction: Insights into Structure-Activity...

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• The oxygen reduction reaction (ORR) is critical for energy devices like fuel cells and metal-air batteries.
• High overpotentials and slow kinetics hinder ORR efficiency, necessitating advanced electrocatalysts.
• Electrospinning offers a versatile method for creating 1D electrocatalysts with tunable properties.

Purpose of the Study:

• To review the structure-activity relationship of 1D electrospun electrocatalysts for ORR.
• To provide mechanistic insights into how structure influences ORR catalytic properties.
• To guide the design and optimization of electrospun ORR electrocatalysts.

Main Methods:

• Summarizing the principles and development of the electrospinning technique.
• Analyzing composition regulation and structure design fundamentals for electrospun materials.
• Presenting comparative studies of various nanofiber-shaped and supported electrocatalysts for ORR.

Main Results:

• Established correlations between specific structural features of electrospun materials and their ORR activity.
• Highlighted the impact of composition and architecture on catalytic performance.
• Identified key parameters for mechanistic understanding of ORR on 1D nanostructures.

Conclusions:

• A clear understanding of the structure-activity relationship is essential for advancing electrospun ORR electrocatalysts.
• Further research should focus on precise manipulation of structure-activity relationships for enhanced performance.
• This review provides a foundation for future development of efficient ORR electrocatalysts.