材料科学
介孔材料
纳米结构
阳极氧化
电解质
乙二醇
纳米技术
阳极
化学工程
锡
电化学
超级电容器
电极
催化作用
复合材料
化学
冶金
物理化学
铝
工程类
生物化学
作者
Haidong Bian,Yayuan Tian,Chris Lee,Muk‐Fung Yuen,Wenjun Zhang,Yang Yang Li
标识
DOI:10.1021/acsami.6b09795
摘要
Here we report a novel type of hierarchical mesoporous SnO2 nanostructures fabricated by a facile anodization method in a novel electrolyte system (an ethylene glycol solution of H2C2O4/NH4F) followed by thermal annealing at a low temperature. The SnO2 nanostructures thus obtained feature highly porous nanosheets with mesoporous pores well below 10 nm, enabling a remarkably high surface area of 202.8 m2/g which represents one of the highest values reported to date on SnO2 nanostructures. The formation of this novel type of SnO2 nanostructures is ascribed to an interesting self-assembly mechanism of the anodic tin oxalate, which was found to be heavily impacted by the anodization voltage and water content in the electrolyte. The electrochemical measurements of the mesoporous SnO2 nanostructures indicate their promising applications as lithium-ion battery and supercapacitor electrode materials.
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