松球状SnO2纳米棒的制备、结构及电化学性能  

Synthesis,structure and electrochemical performance of pine cones-like SnO_2 nanorod anode material

作　　者：梁妹芳[1] 程琥[1] Liang Meifang Cheng Hu(School of Chemistry and Material Science,Key Lab for Functional Materials Chemistry of Guizhou Province, Guizhou Normal University, Guiyang 550001)

机构地区：[1]贵州师范大学化学与材料科学学院,贵州省功能材料化学重点实验室,贵阳550001

出　　处：《化工新型材料》2016年第10期91-93,共3页New Chemical Materials

基　　金：基金项目:黔科合区域合[2014]7002号

摘　　要：以锡酸钠为原料,聚乙烯吡咯烷酮（PVP）为表面活性剂,采用水热法制备松球状SnO_2纳米棒负极材料。利用扫描电子显微镜（SEM）、X射线衍射（XRD）、比表面积仪（BET）及电化学测试仪测试材料的形貌、结构、比表面积和电化学性质。结果表明,制备的SnO_2纳米晶体形貌呈松球状且尺寸均匀,分散性良好,为典型的四方系金红石相结构,比表面积为110.3m2/g,且为Ⅳ型的介孔结构。在0.01~2.5V,以200mA/g进行充放电,材料的首次放电容量为1659.3mAh/g,经过50次循环后,放电容量保持313.9mAh/g,表现出较好的循环稳定性能。The pine corles-like SnO2 nanorods anode material was prepared by hydrothermal method with sodium stannate as raw material aud PVP as surfactant. The morphology, structure, specific surface area and electrochemical per- formanee of material was characterized by using SEM XRD BET and electrochemical technique. The resuhs showed that the morphology of SnO2 nanocrystals were uniform size and well dispersed,and were the typical of tetragonal rutile phase, the specific surface area of 110.3m2/g,and for type IV mesoporous structure. The electrochemical test results indicated that the initial discharge capacity of material reached 1659.3mAh/g at the rate of 200mA/g between 0.01 to 2.5V. And the dis- charge capacity remained 313.9mAh/g after 50 cycles. So,the material showed better cycle performance.

关 键 词：松球状 SNO2 负极材料 电化学性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]