基于3D打印石墨烯气凝胶的非水系锂氧电池正极材料的研究  

Cathode material of non-aqueous lithium-oxygen battery based on 3D-printed graphene aerogel

作　　者：刘闯 李强 薛志超 张添昱 孙红 LIU Chuang;LI Qiang;XUE Zhichao;ZHANG Tianyu;SUN Hong(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang110168,China;School of Science,Shenyang Jianzhu University,Shenyang110168,China)

机构地区：[1]沈阳建筑大学机械工程学院,辽宁沈阳110168 [2]沈阳建筑大学理学院,辽宁沈阳110168

出　　处：《电子元件与材料》2022年第9期908-915,共8页Electronic Components And Materials

基　　金：国家自然科学基金(51776131);国家自然科学基金(51902211);辽宁省教育厅高校科研基金(lnqn202007)。

摘　　要：锂氧电池因其环境友好和高理论比容量的特性,近年来备受关注。采用3D打印技术,以还原氧化石墨烯(rGO)为基底,碳纳米纤维(CNF)为增强导电剂,二硫化钼(MoS)为催化剂制备rGO-CNF-MoS复合正极。通过X射线光电子能谱、扫描电子显微镜和氮气吸脱附等检测技术对其组成成分、表面形貌以及比表面积进行表征分析,通过恒流定容充放电测试、深度充放电测试,研究复合正极对锂氧电池性能的影响。研究结果表明装配rGO-CNF-MoS复合正极的非水系锂氧电池具有较低的充放电电势差(1.21 V)和较高的电化学容量,其放电面积比容量达到11.68 mAh·cm^(-2)。Lithium-oxygen batteries have attracted much attention in recent years because of their environmental friendliness and high theoretical specific capacity.The rGO-CNF-MoScomposite anode was prepared by 3 D printing technology with reduced graphene oxide(rGO)as the substrate,carbon nanofiber(CNF)as the enhanced conductive agent and MoSas the catalyst.The composition,surface morphology and specific surface area of the lithium-oxygen battery were characterized and analyzed by X-ray photoelectron spectroscopy,scanning electron microscopy and nitrogen adsorption-desorption techniques.The effects of the composite anode on the performance of lithium-oxygen battery were studied by constant current&constant volume charge-discharge test and depth charge-discharge test.The results show that the non-aqueous lithium-oxygen battery equipped with rGO-CNF-MoScomposite anode has lower charge-discharge potential difference(1.21 V)and higher electrochemical capacity,and the discharge area ratio capacity of it reaches 11.68 mAh·cm^(-2).

关 键 词：锂氧电池 3D打印 催化剂 石墨烯 碳纳米纤维 放电面积比容量 

分 类 号：TM911.41[电气工程—电力电子与电力传动]