@article{CUI2023, 
author = {Junpeng CUI and Linghong LUO and Leying WANG and Liang CHENG and Xu XU},
title = {Effects of Li2CO3 on Properties of BaZr0.1Ce0.7Y0.1Yb0.1O3-δ Proton Conducting Electrolyte},
year = {2023},
journal = {Journal of Ceramics},
volume = {44},
number = {5},
pages = {902-911},
keywords = {BaZr0.1Ce0.7Y0.1Yb0.1O3-δ proton conductor, sintering performance, conductivity, Li2CO3},
url = {https://www.sciopen.com/article/10.13957/j.cnki.tcxb.2023.05.006},
doi = {10.13957/j.cnki.tcxb.2023.05.006},
abstract = {The development and preparation of high-performance electrolyte materials will promote the commercialization of proton conductor solid oxide fuel cell (PCFC). BaZr0.1Ce0.7Y0.1Yb0.1O3-δ (BZCYYb) is a promising PCFC electrolyte material, which has sufficient chemical stability and high ionic conductivity in low and intermediate temperature range (400–700 ℃). However, the low sintering activity of BZCYYb hinders its application in PCFC. BZCYYb powder was synthesized by using an improved Pechini method, with inorganic salt Li2CO3 as the sintering aid, which was introduced using a mechanical ball milling mixing process. The addition of Li2CO3 significantly promoted densification process of the electrolyte, without changing the crystalline structure and phase composition of BZCYYb. After adding 8 mol%Li2CO3 and sintering at 1350 ℃ for 3 h, the sample exhibited relative density and linear shrinkage of 95.37% and 17.90%, respectively. The sample with 8 mol% Li2CO3 had the highest conductivity in wet hydrogen gas,  reaching 1.922×10-2 S·cm-1 at 700 ℃,  while the BZCYYb sample sintered at 1450 ℃ for 5 h had a conductivity of 1.493×10-2 S·cm-1. The introduction of an appropriate amount of Li2CO3 can significantly reduce the sintering temperature of BZCYYb, with desirable increment in the conductivity.}
}