Cross-stacking crystal structural configuration of integrated cathode materials for proton-conducting solid oxide fuel cells

The absence of cathode materials with excellent activity and stability has hampered the widespread application of proton-conducting solid oxide fuel cells(H-SOFCs).Sm_(2)Ba_(1.33)Ce_(0.67)Cu_(3)O_(9)(SBCC)is a layered material formed by the cross-stacking of a[CuO_(5)layer][CeO_(2)-like layer][CuO_(5)layer][Sm_(x)Ba_(1-x)CuO_(y)perovskite layer].This complex structure could potentially enhance electrocatalytic performance owing to the integration of differentstructural,chemical and electronic properties.