期刊
NANO ENERGY
卷 11, 期 -, 页码 481-489出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2014.11.036
关键词
Graphdiyne; Electrochemical performance; Lithium storage; High capacity; Long cycle lives
类别
资金
- 100 Talents program of the Chinese Academy of Sciences
- National Natural Science Foundation of China Youth Science Fund Project [21301184]
- National Basic Research 973 Program of China [2011CB932302, 2012CB932900]
- National Nature Science Foundation of China [201031006, 91227113, 21290190]
There is an increasing demand for improvement of the capacity, rate performance, and life cycle of Lithium-ion batteries to meet the requirements of low-emission vehicles, such as hybrid electric and plug-in hybrid electric vehicles. In this article, we report the application of graphdiyne (GDY) as high efficiency lithium storage materials and elucidate the method of lithium storage in multilayer GDY. GDY is a novel carbon allotrope comprising sp- and sp(2)-hybridized carbon atoms. Lithium-ion batteries featuring GDY-based electrode exhibit excellent electrochemical performance, including high specific capacities, outstanding rate performances, and a long cycle lives. We obtained reversible capacities of up to 520 mAh/g after 400 cycles at a current density of 500 mA/g. At an even higher current density of 2 A/g, cells incorporating GDY-based electrodes retained a high specific capacity of 420 mAh/g after 1000 cycles. (C) 2014 Elsevier Ltd. All rights reserved.
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