Microstructure and long-term stability of Ni–YSZ anode supported fuel cells:a review  

作　　者：Sajad Vafaeenezhad Amir Reza Hanifi Miguel A Laguna-Bercero Thomas H Etsell Partha Sarkar 

机构地区：[1]Department of Chemical and Materials Engineering,University of Alberta,Edmonton,Alberta T6G 1H9,Canada [2]Instituto de Nanociencia y Materiales de Aragón(INMA),CSIC-Universidad de Zaragoza,C/Pedro Cerbuna 12,Zaragoza E-50009,Spain

出　　处：《Materials Futures》2022年第4期18-51,共34页材料展望（英文）

基　　金：The authors would like to acknowledge Future Energy Systems Research Initiative(Grant Number RES0031233);grant PID2019-107106RB-C32 funded by MCIN/AEI/10.13039/50110001103 for financial support of the research carried out at the University of Alberta and Instituto de Nanociencia y Materiales de Aragón(CSIC-Unizar)and during preparation of the current manuscript.

摘　　要：Nickel–yttria stabilized zirconia(Ni–YSZ)cermet is the most commonly used anode in solid oxide fuel cells(SOFCs).The current article provides an insight into parameters which affect cell performance and stability by reviewing and discussing the related publications in this field.Understanding the parameters which affect the microstructure of Ni–YSZ such as grain size(Leng et al 2003 J.Power Sources 11726–34)and ratio of Ni to YSZ,volume fraction of porosity,pore size and its distribution,tortuosity factor,characteristic pathway diameter and density of triple phase boundaries is the key to designing a fuel cell which shows high electrochemical performance.Lack of stability has been the main barrier to commercialization of SOFC technology.Parameters influencing the degradation of Ni–YSZ supported SOFCs such as Ni migration inside the anode during prolonged operation are discussed.The longest Ni-supported SOFC tests reported so far are examined and the crucial role of chromium poisoning due to interconnects,stack design and operating conditions in degradation of SOFCs is highlighted.The importance of calcination and milling of YSZ to development of porous structures suitable for Ni infiltration is explained and several methods to improve the electrochemical performance and stability of Ni–YSZ anode supported SOFCs are suggested.

关 键 词：long-term stability NI YSZ MICROSTRUCTURE SOFC ANODE 

分 类 号：TM911.4[电气工程—电力电子与电力传动]