Functional layer engineering to improve performance of protonic ceramic fuel cells

作     者：Ning Wang Zhi-Yin Huang Chun-Mei Tang Li-Xin Xing Ling Meng Yoshitaka Aoki Lei Du Si-Yu Ye Ning Wang;Zhi-Yin Huang;Chun-Mei Tang;Li-Xin Xing;Ling Meng;Yoshitaka Aoki;Lei Du;Si-Yu Ye

作者机构：Huangpu Hydrogen Energy Innovation CenterSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou510006China Graduate School of Chemical Sciences and EngineeringHokkaido UniversitySapporo060-8628Japan Faculty of EngineeringHokkaido UniversitySapporo060-8628Japan 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2023年第42卷第7期

页      面：2250-2260页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：financially supported by China Post-doctoral Science Foundation(No.2022M710856) Guangzhou Postdoctoral Research Project(No.62104380) the Outstanding Youth Project of Natural Science Foundation of Guangdong Province(No.2022B1515020020) the Funding by Science and Technology Projects in Guangzhou(Nos.202206050003 and 202201010603) Guangdong Engineering Technology Research Center for Hydrogen Energy and Fuel Cells 

主　　题：Protonic ceramic fuel cell(PCFC) Cathode functional layer(CFL) Power density Triple phase boundary(TPB) 

摘      要：Protonic ceramic fuel cells(PCFCs)have been attracting increasing attention because of their advances in high-efficiency power generation in an intermediate-temperature range,as compared to the high-temperature solid oxide fuel cells(SOFCs).The greatest difference between PCFCs and SOFCs is the specific requirement of protonic(H+)conductivity at the PCFC cathode,in addition to the electronic(e^(-))and oxide-ion(O^(2-))*** development of a triple H^(+)/e^(-)/O^(2-)conductor for PCFC cathode is still ***,the most-widely used cathode material is based on the mature e^(-)/O^(2-)***,this leads to insufficient triple phase boundary(TPB),i.e.,reaction ***,an efficient strategy that uses a~100 nm-thick proton conductive functional layer(La_(0.5)Sr_(0.5)CoO_(3-δ),LSC55)in-between the typical La_(0.8)Sr_(0.2)CoO_(3-δ)cathode(a mature e-/O^(2-)conductor,LS C 82)and B aZr_(0.4)Ce_(0.4)Y_(0.1)Yb_(0.)1O_(3-δ)elec trolyte(11 mm in diameter,20μm in thickness)is proposed to significantly enhance the reaction ***,the ohmic resistance and polarization resistance are both decreased by 47%and 62%,respectively,compared with that of PCFCs without the functional *** power density of the PCFC with such a functional layer can be raised by up to 2.24 times,superior to those described in previous *** enhanced PCFC performances are attributed to the well-built TPB and enhanced reaction area via the functional layer engineering strategy.