Inexpensive catalysts for splitting water to hydrogen and oxygen.
Applications include hydrogen fuel cells and solar-driven water splitting electrolyzer.
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.
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.
- Highly active non-precious-metal containing oxide catalysts for O2 electrocatalysis
- Step toward implementation of hydrogen-based renewable energy
- More cost-effective