Surprise finding in semiconductor research fixes zinc battery flaw

Researchers at Purdue Polytechnic Institute have made a surprising breakthrough that could significantly improve zinc battery technology. While working on low-temperature semiconductors for flexible electronics, the team discovered that a p-type tin oxide semiconductor layer can protect zinc anodes from corrosion and hydrogen evolution—two major factors that degrade zinc battery performance and lifespan. This accidental finding emerged during experiments with semiconductor thin films and has led to a patent application, highlighting its potential impact. Zinc batteries are valued for their safety, affordability, and environmental benefits compared to lithium-ion batteries, but their widespread use has been limited by short lifespans and performance issues. The tin oxide coating discovered by the Purdue researchers enhances the stability and durability of zinc anodes, potentially extending battery life and enabling broader commercial adoption. This innovation exemplifies how cross-disciplinary research can unlock new solutions, offering a scalable and sustainable approach for large-scale energy storage systems. The findings were published in the journal Energy & Environmental Science.