One-pot fabrication of nitrogen and sulfur dual-doped graphene/sulfur cathode via microwave assisted method for long cycle-life lithium-sulfur batteries

被引:28
作者
Chen, Dan [1 ]
Yang, Rong [1 ]
Chen, Liping [2 ]
Zou, Yiming [1 ]
Ren, Bing [3 ]
Li, Lan [1 ]
Li, Sichen [1 ]
Yan, Yinglin [2 ]
Xu, Yunhua [2 ]
机构
[1] Xian Univ Technol, Sch Sci, Xian 710048, Shaanxi, Peoples R China
[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China
[3] Shaanxi Appl Phys & Chem Res Inst, Xian 710061, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Dual-doped graphene; Microwave; Cathode; Lithium-sulfur battery; HIGH-PERFORMANCE; FUNCTIONALIZED GRAPHENE; CARBON SPHERES; POROUS CARBON; HIGH-CAPACITY; COMPOSITE; OXIDE; REDUCTION; NANOWIRES; NETWORKS;
D O I
10.1016/j.jallcom.2018.02.279
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Nitrogen and sulfur dual-doped graphene (NSG) synthesized by a simple and low-cost one-pot microwave assisted method is applied to immobilize sulfur by the mean of an in situ sulfur deposition approach. Images of scanning electron microscope (SEM) and transmission electron microscope (TEM) show that nano-sulfur (2-20 nm) is wrapped by the transparent NSG nanosheets with wrinkled and folded features. The application of X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) confirmed the structure and composition of the obtained nitrogen and sulfur dual-doped graphene/sulfur (NSG/S) composites as well. The heteroatom doping content was controlled by adjusting the amount of thiourea. The XPS analysis results indicate that pyridinic-N and pyrrolic-N are dominant among the product, thereby improving the cycle life of the lithium sulfur batteries. The NSG-4/S composites with sulfur loading of 68 wt% exhibits a remarkably higher reversible specific capacity of 1583 mAh g(-1), impressive rate capability, splendid specific discharge capacity of 819 mAh g(-1) at 0.1 C after 100 cycles and long cycle stability of 640 mAh g(-1) after 200 cycles at 1 C. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:116 / 124
页数:9
相关论文
共 57 条
[1]   Nitrogen and Sulfur Dual-Doped Reduced Graphene Oxide: Synergistic Effect of Dopants Towards Oxygen Reduction Reaction [J].
Bag, Sourav ;
Mondal, Bodhisatwa ;
Das, Ashok Kumar ;
Raj, C. Retna .
ELECTROCHIMICA ACTA, 2015, 163 :16-23
[2]   Physical and electrochemical properties of LiMnPO4/C composite cathode prepared with different conductive carbons [J].
Bakenov, Zhumabay ;
Taniguchi, Izumi .
JOURNAL OF POWER SOURCES, 2010, 195 (21) :7445-7451
[3]   Lithium Ion Battery Peformance of Silicon Nanowires with Carbon Skin [J].
Bogart, Timothy D. ;
Oka, Daichi ;
Lu, Xiaotang ;
Gu, Meng ;
Wang, Chongmin ;
Korgel, Brian A. .
ACS NANO, 2014, 8 (01) :915-922
[4]  
Bruce P. G., 2008, CHEMINFORM, V39, P2930
[5]   Sulfur impregnated N, P co-doped hierarchical porous carbon as cathode for high performance Li-S batteries [J].
Cai, Junjie ;
Wu, Chun ;
Zhu, Ying ;
Zhang, Kaili ;
Shen, Pei Kang .
JOURNAL OF POWER SOURCES, 2017, 341 :165-174
[6]   Recent advances in lithium-sulfur batteries [J].
Chen, Lin ;
Shaw, Leon L. .
JOURNAL OF POWER SOURCES, 2014, 267 :770-783
[7]   Aligned carbon nanotube/sulfur composite cathodes with high sulfur content for lithium-sulfur batteries [J].
Cheng, Xin-Bing ;
Huang, Jia-Qi ;
Zhang, Qiang ;
Peng, Hong-Jie ;
Zhao, Meng-Qiang ;
Wei, Fei .
NANO ENERGY, 2014, 4 :65-72
[8]   New Horizons for Conventional Lithium Ion Battery Technology [J].
Erickson, Evan M. ;
Ghanty, Chandan ;
Aurbach, Doron .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2014, 5 (19) :3313-3324
[9]   Orthorhombic Bipyramidal Sulfur Coated with Polypyrrole Nanolayers As a Cathode Material for Lithium-Sulfur Batteries [J].
Fu, Yongzhu ;
Manthiram, Arumugam .
JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (16) :8910-8915
[10]   Atomic Structure of Reduced Graphene Oxide [J].
Gomez-Navarro, Cristina ;
Meyer, Jannik C. ;
Sundaram, Ravi S. ;
Chuvilin, Andrey ;
Kurasch, Simon ;
Burghard, Marko ;
Kern, Klaus ;
Kaiser, Ute .
NANO LETTERS, 2010, 10 (04) :1144-1148