直接氨固体氧化物燃料电池阳极氨中毒研究  

Anode Ammonia Poisoning of Direct Ammonia Solid Oxide Fuel Cells

作　　者：郭冠伦 王树杰 吴胜 GUO Guanlun;WANG Shujie;WU Sheng(School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,Hubei,China;College of Intelligent Manufacturing,Jianghan University,Wuhan 430056,Hubei,China)

机构地区：[1]武汉理工大学汽车工程学院,湖北武汉430070 [2]江汉大学智能制造学院,湖北武汉430056

出　　处：《陶瓷学报》2025年第1期87-95,共9页Journal of Ceramics

基　　金：高等学校学科创新引智计划(B17034);教育部创新团队发展计划(IRT_17R83)。

摘　　要：氨气会对SOFC阳极造成不可逆的损伤,为探究氨气对Ni基阳极的中毒机制,本文采用水热法合成了NiO粉末,使用机械混合和共压法制备了NiO/YSZ阳极材料,并搭建了阳极材料的氨中毒试验台架,同时利用X射线衍射、扫描电镜、能谱分析等方法对氨中毒实验前后的阳极材料进行了表征。结果表明:氨中毒试验前后NiO/YSZ阳极材料的微观形貌发生了明显变化,主要体现在原本呈现出晶状颗粒的NiO出现了团聚现象,且“颗粒感”和“圆润感”明显增强,同时NiO粒径增大了32%,阳极材料的孔隙率从18.6%增大到了33.1%;氨中毒试验后NiO/YSZ阳极材料中的氮元素含量增加了4倍左右。[Background and purpose]Solid oxide fuel cells(SOFCs),as a clean and efficient energy conversion device,have been widely recognized for their numerous advantages,such as low pollution emissions,high energy conversion efficiency and broad application range.They are regarded as one of the most environmentally friendly power generation methods in the 21st century.Under the condition of ignoring cost,hydrogen is considered to be the most ideal fuel for SOFCs,because it does not cause any environmental pollution during the energy conversion process.However,the high costs associated with the production,storage and transportation of hydrogen have significantly restricted the large-scale application of SOFCs.In contrast,ammonia,as a carbon-free hydrogen carrier fuel,has attracted the attention of researchers,due to its relatively low cost and high energy conversion efficiency.Therefore,direct ammonia-fed solid oxide fuel cells(DA-SOFCs)have gained significant popularity.Nevertheless,ammonia has been found to cause irreversible damage to the anode of SOFCs.To understand the poisoning mechanism of ammonia on Ni-based anodes,this study was aimed to explore the detailed process and provide valuable insights for improving the performance and durability of SOFCs.[Methods]In this research,several experimental methods were employed.Firstly,NiO powder was synthesized by using a hydrothermal method.This method allowed for precise control of the reaction conditions,such as temperature,pressure and reactant concentrations,thus enabling the formation of NiO powder with specific crystal structures and particle sizes.The synthesized NiO powder was then used to prepare NiO/YSZ anode materials by mechanical mixing and co-pressing methods.Mechanical mixing ensured the homogeneous distribution of NiO and YSZ,while co-pressing helped to form a compact and stable anode structure.To simulate the actual ammonia exposure environment,a customized ammonia poisoning test bench for the anode materials was constructed.This bench was designed to accu

关 键 词：氨中毒 直接氨SOFC 阳极材料 微观结构 

分 类 号：TQ174.75[化学工程—陶瓷工业]