期刊
NANO LETTERS
卷 14, 期 2, 页码 1005-1010出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl404466v
关键词
quantum confinement; GeO2; critical size; electrochemical performance
类别
资金
- Converging Research Center Program [2013K000210]
- C-ITRC (Convergence Information Technology Research Center) support program [NIPA-2013-H0301-13-1009]
- National Research Foundation of Korea [2010-0019408, 2010-50181] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This work has been performed to determine the critical size of the GeO2 nanoparticle for lithium battery anode applications and identify its quantum confinement and its related effects on the electrochemical performance. GeO2 nanoparticles with different sizes of similar to 2, similar to 6, similar to 10, and similar to 35 nm were prepared by adjusting the reaction rate, controlling the reaction temperature and reactant concentration, and using different solvents. Among the different sizes of the GeO2 nanoparticles, the similar to 6 nm sized GeO2 showed the best electrochemical performance. Unexpectedly smaller particles of the similar to 2 tom sized GeO2 showed the inferior electrochemical performances compared to those of the similar to 6 nm sized one. This was due to the low electrical conductivity of the similar to 2 nm sized GeO2 caused by its quantum confinement effect, which is also related to the increase in the charge transfer resistance. Those characteristics of the smaller nanoparticles led to poor electrochemical performances, and their relationships were discussed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据