Fabrication of Nb2O5 nanosheets for high-rate lithium ion storage applications.

Fabrication of Nb2O5 nanosheets for high-rate lithium ion storage applications.
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用于高倍率锂离子存储应用的 Nb2O5 纳米片的制造

DOI:
10.1038/srep08326
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发表时间:
2015-02-09
期刊:
影响因子:
4.6
通讯作者:
Zhang Y
Zhang Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Liu M;Yan C;Zhang Y

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通过水热反应和空气热处理成功地合成了Nb 2 O 5纳米片。结构表征表明,这些片层的厚度约为50 nm,片层长度为500 ~ 800 nm。这种独特的二维结构使得纳米片电极在充放电过程中具有上级的性能,例如高比容量(~184 mAh·g-1)和倍率性能。即使在1 A·g-1的电流密度下,纳米片电极仍表现出约90 mAh·g-1的比容量。这些结果表明,Nb 2 O 5纳米片是一个有前途的候选人,高速率锂离子存储应用。
Nb2O5 nanosheets are successfully synthesized through a facile hydrothermal reaction and followed heating treatment in air. The structural characterization reveals that the thickness of these sheets is around 50 nm and the length of sheets is 500 ~ 800 nm. Such a unique two dimensional structure enables the nanosheet electrode with superior performance during the charge-discharge process, such as high specific capacity (~184 mAh·g−1) and rate capability. Even at a current density of 1 A·g−1, the nanosheet electrode still exhibits a specific capacity of ~90 mAh·g−1. These results suggest the Nb2O5 nanosheet is a promising candidate for high-rate lithium ion storage applications.
具有规则结构缺陷的分层 Li4Ti5O12/TiO2 复合管,用于锂离子存储。
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