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A rGO-CNT aerogel covalently bonded with a nitrogen-rich polymer as a polysulfide adsorptive cathode for high sulfur loading lithium sulfur batteries
Hong, Xiaoheng1,2; Jin, Jun1; Wu, Tian1,2; Lu, Yang1,2; Zhang, Sanpei1,2; Chen, Chunhua4; Wen, Zhaoyin1,2,3
2017
发表期刊Journal of Materials Chemistry A
ISSN20507488
卷号5期号:28页码:14775-14782
摘要The development of high capacity lithium-sulfur (Li-S) batteries is hampered by both the shuttle effect of polysulfides and low sulfur areal loading problems. To inhibit the shuttle effect, a polysulfide adsorptive polymer polyethylenimine (PEI) is covalently bonded with reduced graphene oxide (rGO) in a one-step hydrothermal reaction. Meanwhile, multi-walled carbon nanotubes (MWCNTs) are simultaneously interweaved with rGO. The resultant PEI-rGO-MWCNT aerogel (PEI-GC) provides ample chemisorption domains of amine groups and abundant electrical contact sites. Density functional theory (DFT) calculations prove a binding energy of 2.43 eV between PEI and polysulfide. The PEI-GC cell achieved a high capacity of 933 mA h g-1for the 500th cycle at 1C, stable rate performance up to 10C, and low self-discharge rate. The covalent bond between PEI and rGO experiences no degradation during the 500 cycles. Moreover, PEI-GC achieved excellent cycling performance at a high sulfur loading of up to 18 mg cm-2. © 2017 The Royal Society of Chemistry.
DOI10.1039/c7ta03552g
EI入藏号20173003969259
EI主题词Loading
EI分类号691.2 Materials Handling Methods - 702.1.1 Primary Batteries - 761 Nanotechnology - 801.3 Colloid Chemistry - 801.4 Physical Chemistry - 804 Chemical Products Generally - 815.1.1 Organic Polymers - 819.4 Fiber Products - 922.1 Probability Theory
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25732
专题中国科学院上海硅酸盐研究所
作者单位1.CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai; 200050, China;
2.Graduate School of Chinese Academy of Sciences, Beijing; 100039, China;
3.Shanghaitech University, Shanghai; 200031, China;
4.University of Science and Technology of China, Hefei; 230026, China
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GB/T 7714
Hong, Xiaoheng,Jin, Jun,Wu, Tian,et al. A rGO-CNT aerogel covalently bonded with a nitrogen-rich polymer as a polysulfide adsorptive cathode for high sulfur loading lithium sulfur batteries[J]. Journal of Materials Chemistry A,2017,5(28):14775-14782.
APA Hong, Xiaoheng.,Jin, Jun.,Wu, Tian.,Lu, Yang.,Zhang, Sanpei.,...&Wen, Zhaoyin.(2017).A rGO-CNT aerogel covalently bonded with a nitrogen-rich polymer as a polysulfide adsorptive cathode for high sulfur loading lithium sulfur batteries.Journal of Materials Chemistry A,5(28),14775-14782.
MLA Hong, Xiaoheng,et al."A rGO-CNT aerogel covalently bonded with a nitrogen-rich polymer as a polysulfide adsorptive cathode for high sulfur loading lithium sulfur batteries".Journal of Materials Chemistry A 5.28(2017):14775-14782.
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