An imprint of sulfur/SiO2in N-doped graphene as positive electrode for lithium-sulfur rechargeable batteries

被引：0
作者：
Rajkumar, P. [1 ]
Diwakar, K. [1 ]
Krishnaveni, K. [1 ]
Subadevi, R. [1 ]
Gnanamuthu, R. M. [2 ]
Wang, Fu-Ming [3 ]
Sivakumar, M. [1 ]
机构：
[1] Alagappa Univ, Dept Phys, Energy Mat Lab, 120,Sci Block, Karaikkudi 630003, Tamil Nadu, India
[2] SRM Inst Sci & Technol, Dept Chem, Kattankulathur 603203, Tamil Nadu, India
[3] Natl Taiwan Univ Sci & Technol, Grad Inst Appl Sci & Technol, Taipei 106, Taiwan
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2020年 / 126卷 / 07期
关键词：
Sulfur electrode; Silicon dioxide; Nitrogen doped graphene; Simple heat treatment; CATHODE MATERIAL; PERFORMANCE; CARBON; COMPOSITE; OXIDE; CAPACITY; DIOXIDE; SPHERES; HYBRID; HOST;
D O I：
10.1007/s00339-020-03617-z
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ternary sulfur (S)-/silicon dioxide (SiO2)-/nitrogen-doped graphene (NG) composite has been prepared by simple heat treatment. Morphological study illustrates the well dispersion of sulfur in the layered structure of SiO2-NG. The initial specific capacity of S-SiO2-NG composite delivers 1204 mAh g(-1), and it maintains the capacity of 716 mAh g(-1)during the 100th cycle at 0.1 C rate with 96% of Coulombic efficiency. The enhanced cycling performance of S-SiO2-NG cathode is mainly attributed to the combined contribution from both SiO(2)and NG. [GRAPHICS] .
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页数：8
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