欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用一种基于气-固反应机制的模板限制镁热还原法,以SiO_2气凝胶为模板在低温（650℃）下制备出种高比表面积纳米多孔硅材料.利用X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、傅里叶变换红外（FTIR）光谱、X射线光电子能谱（XPS）和比表面积（BET）分析等表征手段对样品的成分、物相结构、微观形貌和孔结构进行分析,并初步研究了材料的光学特性和电化学性以.结果表明,产物为纳米硅晶体颗粒组成的多孔结构,保留了与原始气凝胶模板相似的微观形貌,比表面积高达602 m2·g（-1）.该材料在室温下表现出显著的红光光致发光特性,且具有较高的储锂容量和较好的嵌入/脱出锂性能.
英文摘要：
Novel nanoporous silicon was successfully converted from SiO_2 aerogels by a template-confined magnesiothermic reduction at low temperature（650℃） based on a gas-solid reaction. The composition,crystal structure,morphology,and pore structure of the samples were analyzed by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,Fourier transform infrared（FTIR） spectroscopy,X-ray photoelectron spectroscopy（XPS）,and Brunauer-Emmett-Teller （BET） surface area analysis.Their optical and electrochemical properties were also investigated.The results indicated that the products consisted of nanocrystalline silicon,retained a morphology similar to that of the original templates,and possessed a specific surface area as high as 602 m~2·g~（-1）.They also showed red photoluminescence at room temperature and had a high capacity and good Li-ion insertion/extraction properties for use in lithium ion batteries.
同期刊论文项目
同项目期刊论文
The synthesis, characterization and electrochemical properties of Multi-Wall Carbon Nanotube-induced
Electrochemical Performance Improvement of Vanadium Oxide Nanotubes as Cathode Materials for Lithium
A Composite Film of V2O5 and Multiwall Carbon Nanotubes as Cathode Materials for Lithium-ionBatterie
A novel and facile way to synthesize vanadium pentoxide nanospike as cathode materials for high perf
Carbon black anchored vanadium oxide nanobelts and its post-sintering counterpart (V2O5 nanobelts) a
Phase transition effect on durability ofWO3 hydrogen sensing films:An insight by experiment and firs
The Process Optimization and Structural Analysis of Gasochromic Thin Films Derived by Peroxopolytung
Synthesis and electrochemical performance of lithium vanadium oxide nanotubes as cathodes for rechar
期刊信息
位置：