基于混合导电功能层的燃料电池研究  

Mixed Conductive Composite as Functional Layer for Electrolyte Layer Free Fuel Cell Application

作　　者：刘雪琪[1] 董文静[1] 黄超[1] 成兴宝 翟鸣亚 朱斌[1] 

机构地区：[1]湖北大学物理与电子科学学院,湖北武汉430062

出　　处：《有色金属材料与工程》2017年第1期1-5,共5页Nonferrous Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(11604088)

摘　　要：采用二次固相法合成具有层状结构的电子导电材料—LiNi_(0.8)Co_(0.15)Al_(0.05)O_(2-δ)(LNCA),并将其与离子导电材料Sm掺杂CeO_2复合,获得具有电子-离子混合导电性的复合材料.并以此为功能层,构造了无电解质隔膜层燃料电池(Electrolyte Free Manbrane Fuel Cell,EFFC).研究了功能层的厚度以及电子-离子导电材料的比例对电池性能的影响,并阐述了影响机制.该电池在550℃下获得了937 mW·cm^(-2)的功率输出,且具备在更低温度下操作的可行性.In this study, an electronic conductor LiNi0.8Co0.15Al0.05O2-δ（LNCA） with layered structure was synthesized via solid-state reaction method.Then a mixed ion-electron conductor（MIEC）, as the functional layer of EFFC（Electrolyte Free Manbrane Fuel Cell） devices, was obtained by mixing LNCA with Sm doped CeO2（SDC）.The functional layer is supposed to act as both catalyst and ion transport media.And next, the thickness of the functional layer as well as the weight proportion of LNCA vs SDC in the composite impact on the device performance was investigated.Finally it was found that the device achieved a maximum power output of 937 mW·cm-2 at 550℃, and it was demonstrated that the device is valid for working under lower temperature.

关 键 词：混合导电 无电解质隔膜层 功能层 燃料电池 

分 类 号：TM911.4[电气工程—电力电子与电力传动]