Bean pod-like Si@dopamine-derived amorphous carbon@N-doped graphene nanosheet scrolls for high performance lithium storage | |
Department | 清洁能源化学与材料实验室 |
Sun, Wei(孙伟)1,2; Wan, Liu(万柳)1; Li XC(李小成)1; Zhao, Xinhong(赵新红)2; Yan XB(阎兴斌)1; Li XC(李小成); Zhao, Xinhong | |
2016 | |
Source Publication | Journal of Materials Chemistry A |
ISSN | 2050-7488 |
Volume | 4Issue:28Pages:10948-10955 |
Abstract | The high theoretical capacity of Si makes it an attractive anode for lithium ion batteries. But the poor cycling performance, caused by the pulverization of electrode materials during cycling, frustrates its practical applications. Inspired by the structure of the bean pod, here we propose a void-containing a Si@dopamine-derived amorphous carbon@N-doped graphene nanosheet scroll (Si@DDAC@N-GNS) architecture, where Si@DDAC nanoparticles (NPs) are uniformly dispersed within the gallery of N-GNSs, leaving large amounts of voids between Si@DDAC NPs. This typical bean pod-like Si@AADC@N-GNS architecture can be synthesized by freeze-drying the mixed suspension of dopamine decorated Si NPs and graphene oxide followed by a thermal annealing process. The developed unique architecture possesses the typical desired features for high performance Si-based anodes, such as efficient pathways to facilitate electron/ion transportation, good structural durability to buffer the volume variation of Si, and an elastic protecting shell layer to block the deposition of the solid–electrolyte interface film on Si. Owing to these advantages, the resulting Si@DDAC@N-GNS electrode delivered a maximum capacity of 2243 mA h g−1 at a current density of 0.3 A g−1, good rate capability (947.8 mA h g−1 at 3 A g−1), and good cycling stability (with a capacity retention of 91.5% after 110 cycles at 2 A g−1), suggesting excellent electrochemical performance. |
Subject Area | 材料科学与物理化学 |
DOI | 10.1039/c6ta04386k |
Indexed By | SCI |
If | 8.867 |
Language | 英语 |
Funding Project | 低维材料与化学储能课题组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20200 |
Collection | 清洁能源化学与材料实验室 |
Corresponding Author | Li XC(李小成); Zhao, Xinhong |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 2.Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou 730050, Peoples R China |
Recommended Citation GB/T 7714 | Sun, Wei,Wan, Liu,Li XC,et al. Bean pod-like Si@dopamine-derived amorphous carbon@N-doped graphene nanosheet scrolls for high performance lithium storage[J]. Journal of Materials Chemistry A,2016,4(28):10948-10955. |
APA | Sun, Wei.,Wan, Liu.,Li XC.,Zhao, Xinhong.,Yan XB.,...&Zhao, Xinhong.(2016).Bean pod-like Si@dopamine-derived amorphous carbon@N-doped graphene nanosheet scrolls for high performance lithium storage.Journal of Materials Chemistry A,4(28),10948-10955. |
MLA | Sun, Wei,et al."Bean pod-like Si@dopamine-derived amorphous carbon@N-doped graphene nanosheet scrolls for high performance lithium storage".Journal of Materials Chemistry A 4.28(2016):10948-10955. |
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