中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Bean pod-like Si@dopamine-derived amorphous carbon@N-doped graphene nanosheet scrolls for high performance lithium storage

文献类型:期刊论文

作者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)
刊名Journal of Materials Chemistry A
出版日期2016
卷号4期号:28页码:10948-10955
ISSN号2050-7488
通讯作者李小成 ; Zhao, Xinhong
英文摘要

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.

学科主题材料科学与物理化学
收录类别SCI
语种英语
WOS记录号WOS:000379473100026
源URL[http://210.77.64.217/handle/362003/20200]  
专题兰州化学物理研究所_清洁能源化学与材料实验室
通讯作者Li XC(李小成)
作者单位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
推荐引用方式
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,&李小成.(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.

入库方式: OAI收割

来源:兰州化学物理研究所

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