Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6472872 | Electrochimica Acta | 2016 | 9 Pages |
Abstract
Carbonized porous aromatic framework (CPAF) nanobeads with 75 wt% S (SCPAF) were synthesized by a simple method. The surface areas of CPAF and SCPAF were 679.8 m2·gâ1 and 2.0 m2·gâ1 respectively, and the predominant micropores both centered at 0.46 nm. The spherical morphology guaranteed high tap density of Li-S batteries. After S loading, the SCPAF nanobeads exhibited excellent electrochemical performances. It showed high initial capacity of 1397.3 mAhâgâ1 at 0.2C, which is 83.4% of the theoretical value of sulfur. And at 0.5C, it shows 0.074% decay rate per cycle over 1000 cycles. The good rate capability and long-term cycling stability indicated CPAF nanobeads composite is a promising sulfur support for Li-S batteries.
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Authors
Wenli Zhai, Wenlu Tu, Yang Liu, Haiyan Gao, Jianguo Yu, Yongnan Zhao, Guodong Li,