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![]() ![]() ![]() ![]() |
刊名 | Journal of Materials Chemistry A
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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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