Rational Ba doping induces multiphase architecture in PrNi0.5Co0.5O3-δ for enhanced triple conductivity in protonic ceramic electrochemical cells - Mengjun Tang; Xiao Zhang; Waqas Muhammad; Yinghua Niu; Sheng Ma; Zuorui Xin; Jiaqi Wang; Tingting Liu; Mian Li; Liping Dai; Jinquan Wang; Zihao Xu; et al. (Chemical Engineering Journal, 2026)