A fast ceramic mixed OH^-/H⁺ ionic conductor for low temperature fuel cells.

ABSTRACT: Low temperature ionic conducting materials such as OH^- and H⁺ ionic conductors are important electrolytes for electrochemical devices. Here we show the discovery of mixed OH^-/H⁺ conduction in ceramic materials. SrZr_0.8Y_0.2O_3-δ exhibits a high ionic conductivity of approximately 0.01 S cm^-1 at 90 °C in both water and wet air, which has been demonstrated by direct ammonia fuel cells. Neutron diffraction confirms the presence of OD bonds in the lattice of deuterated SrZr_0.8Y_0.2O_3-δ. The OH^- ionic conduction of CaZr_0.8Y_0.2O_3-δ in water was demonstrated by electrolysis of both H₂¹⁸O and D₂O. The ioni

SUBMITTER: Zou P 

PROVIDER: S-EPMC10827789 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature