带有一维纳米阵列结构LiFePO_4薄膜的制备与表征  

Synthesis and Characterization of LiFePO_4 Thin Films Attached with One-dimensional Nanoarrays

作　　者：王相菲[1] 戴金辉[1] 吴平伟[1] 朱志斌[1] 黄翔[1] 田进涛[1] 展飞[1] 周珑[1] 

机构地区：[1]中国海洋大学材料科学与工程研究院,青岛266100

出　　处：《材料导报》2013年第10期22-25,共4页Materials Reports

基　　金：山东省科技发展计划项目(2009GG10003039);青岛科技攻关(10-3-4-1-9-jch)

摘　　要：通过阳极氧化铝模板辅助溶胶-凝胶法制备了带有一维纳米阵列结构的LiFePO4薄膜。其中,柠檬酸不仅起到络合剂的作用,还为体系提供了碳源。采用XRD、TEM、SEM等测试手段对试样进行了表征,结果表明,制备的LiFePO4结晶良好。同时考察了不同条件对沉积LiFePO4纳米线的影响,确定了沉积纳米线的优化条件:真空沉积,溶胶浓度为0.25mol/L,沉积次数为3次,去模板时间为40min,冷冻干燥。The LiFePO4 films attached with nanoarrays were successfully fabricated by a sol-gel method with porous anodic aluminum oxide （AAO） as the template. The citric acid in this sol-gel process played the role of not on- ly a complexing agent but also a carbon source. The products were characterized by X-ray diffractometry （XRD）, scanning electron microscopy （SEM）, and transmission electron microscopy （TEM） techniques. The results show that the as-prepared LiFePO4 crystallize well. The influence of different conditions on LiFePO4 nanowires＇ deposition was investigated. The optimized conditions for depositing nanowires are： sol concentration is 0. 25 mol/L, employing vacuum deposition, depositing 3 times, removing templates in 40 min and freeze-drying.

关 键 词：LIFEPO4 溶胶-凝胶 AAO模板 薄膜 

分 类 号：TQ150[化学工程—电化学工业]