Efficient H2O2 production from a SrTiO3-based thermoelectrocatalyst for harvesting low-grade waste heat

Abstract

Building on the concept of a thermoelectrocatalyst (TECatal), we propose a simple yet efficient TECatal material, vacancy defect engineered SrTiO₃, for stable H₂O₂ production under temperature gradients. A solid-phase reaction was applied to introduce oxygen vacancies, generating free electrons and inducing a thermoelectric response in SrTiO₃. This approach achieved an impressive H₂O₂ production rate of approximately 764 μmol L⁻¹ g⁻¹ h⁻¹ at a temperature gradient of 130 °C conceiving the feasibility of the thermoelectrocatalyst for harvesting low-grade waste heat.