掺铝氧化锌/还原石墨烯复合材料的制备及性能  

Synthesis and performance of Al-doped ZnO/reduced graphene oxide composite

作　　者：张霞[1] 吴建达[1] 王赞 李亚娟[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083 [2]香港豪鹏科技有限公司,广东深圳518111

出　　处：《电池》2013年第2期94-97,共4页Battery Bimonthly

基　　金：国家自然科学基金(51104184)

摘　　要：用溶胶-凝胶法制备掺铝氧化锌(AZO)/还原石墨烯(rGO)复合材料。通过XRD、场发射扫描电子显微镜(FESEM)、Raman光谱和能量散射X射线能谱(EDS)等技术,对产物的结构和形貌进行分析。铝掺入了氧化锌的晶格,颗粒状的氧化锌颗粒(60～150 nm)均匀分布在rGO纳米片上。以100 mA/g的电流在0.01～3.00 V充放电,使用10 ml氧化石墨分散液和2 ml硝酸铝溶液制得的AZO/rGO复合材料的首次放电比容量为836.6 mAh/g,第30次循环的比容量为462.8 mAh/g。Al-doped ZnO（AZO）/reduced graphene oxide （rGO）composites were prepared via a sol-gel method. The structure and morphology of the samples were analyzed by XRD, field-emission scanning electron microscopy （ FESEM）, Raman spectra and energy dispersive X-ray spectroscopy （EDS）. Al was doped into the crystal of ZnO, granular ZnO nanoparticles （60 - 150 nm）were uniform-ly distributed on the rGO nanosheets. When charged-discharged with the current of 100 mA/g in 0. 01 - 3.00 V ,the initial specific discharge capacity of AZO/rGO eompesite prepared with 10 ml grapheme oxide dispersion liquid and 2 ml aluminum nitrate solution was 836. 6 mAh/g,the soecific caoacitv was 462. 8 mAh/g in the 30th cycle.

关 键 词：锂离子电池 铝掺杂氧化锌 石墨烯 电化学性能 溶胶-凝胶法 

分 类 号：TM912.9[电气工程—电力电子与电力传动]