Asymmetry of Multi-electron Transfer Kinetics in Oxygen Electrocatalysis and its Application for Highly Active Catalyst Design

Applications

Applications include hydrogen fuel cells and solar-driven water splitting electrolyzer.

Problem Addressed

This technology overcomes these current problems:

  • Oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) are two limiting processes that each contributes to ~0.4 V loss
  • Cost and scarcity of noble metal oxide catalysts is prohibitive for practice applications

Technology

The invention describes a method to design efficient, abundant, non-precious-metal catalysts for OER. The design principle looks to develop a more active OER catalyst by engineering the eg filling to a value of ~1.3-1.4. With proper understanding, tuning surface electronic features like the transition metal eg filling is a promising strategy to develop highly active non-precious-metal containing oxide catalysts that can have higher activity than state-of-the-art precious metal-containing material.

Advantages

  • Highly active non-precious-metal containing oxide catalysts for O2 electrocatalysis
  • Step toward implementation of hydrogen-based renewable energy
  • More cost-effective

Intellectual Property

IP Type: Granted US Patent

IP Title: Electrochemical methods and systems using catalytic materials 

IP Number: 10,553,866