In Situ Formation of BaCoNbO/BaNbO Heterostructure in Electrolytes for Enhancing Proton Conductivity and SOFC Performance.

The in situ formation of a heterostructure delivers superior electrochemical properties as compared to the mechanical mixing, which shows great promise for developing new electrolytes for solid oxide fuel cells (SOFCs). Herein, in an SOFC constructed by the BaNbO electrolyte and NiCoAlLiO anode, an in situ formation of BaCoNbO/BaNbO heterostructure is designed by Co-ion diffusion from the anode to the electrolyte during cell operation, resulting in improved ion conductivity and fuel cell performance. An abnormal phenomenon is observed that the SOFC based on the BaCoNbO/BaNbO electrolyte delivered a peak power density of 703 mW/cm at 510 °C, which is higher than that at 550 °C.

[Meta-analysis on acupuncture for treatment of dementia].

Objective: To assess the therapeutic effect of acupuncture on dementia.

Methods: The literatures of acupuncture for treatment of dementia are comprehensively searched in according with the demands of the evidence-based medicine (EBM), which are collected from relevant domestic medical literature databases in the last ten years. Meta-analysis is conducted on the literatures enrolled.