Article ID Journal Published Year Pages File Type
7996512 Journal of Alloys and Compounds 2016 7 Pages PDF
Abstract
In this article, monocrystalline bundles and polycrystalline nanowires were synthesized using α-MnO2 and MnOOH as precursors via an in-situ reaction. The electrochemical properties of the resulting nanocrystals were investigated. Results reveal that the polycrystalline nanowires are more activated than the monocrystalline nanowires. The polycrystalline nanowires also deliver a maximum discharge capacity of 226 mA h/g at 10 mA/g. Compared with the linear charging plateau at >4.3 V in the monocrystalline bundles, the charging platues of (100) and (001) domains in the polycrystalline nanowires are 4.3-4.55 and 4.55-4.6 V, respectively. The high capacity and rate performance of the polycrystalline nanowires are attributed to their good electroconductivity and rapid Li+ diffusion, which originate from defects and small domains.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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