Ultrasmall Sn nanodots embedded inside N-doped carbon microcages as high-performance lithium and sodium ion battery anodes

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	Ultrasmall Sn nanodots embedded inside N-doped carbon microcages as high-performance lithium and sodium ion battery anodes
	Zhang, Shunlong; Meng, Zhen; Sun, Zixu; Han, Wei-Qiang; Ying, Hangjun
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2017
卷号	5 期号:18 页码:8334-8342
ISSN号	2050-7488
英文摘要	Sn based materials are promising anodes both in Li-ion batteries and Na-ion batteries due to their high theoretical capacities (994 mA h g(-1) for LIBs and 847 mA h g(-1) for SIBs, respectively). In order to improve the cycle performance, Sn/N-doped carbon microcage composites (Sn/NMCs) with Sn nanodots uniformly embedded inside the N-doped carbon microcages are synthesized through a simple spray drying process, followed by thermal treatment. When used as electrodes, Sn/NMCs exhibit an initial reversible capacity of 780 mA h g(-1) at 200 mA g(-1), and maintain 472 mA h g(-1) after 500 cycles in LIBs. For Na-ion batteries, Sn/NMCs deliver an initial reversible capacity of 439 mA h g(-1) at 50 mA g(-1) and maintain 332 mA h g(-1) after 300 cycles. The remarkable electrochemical performance is mainly owing to the advanced structure of Sn/NMCs, which could be attributed to the pore-formation using NaCl, and the grain size inhibition of Sn using N-doped carbon. Moreover, this preparation method is accessible to scale up and can be extended to fabricate other electrode materials.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13833]
专题	2017专题
推荐引用方式 GB/T 7714	Zhang, Shunlong,Meng, Zhen,Sun, Zixu,et al. Ultrasmall Sn nanodots embedded inside N-doped carbon microcages as high-performance lithium and sodium ion battery anodes[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(18):8334-8342.
APA	Zhang, Shunlong,Meng, Zhen,Sun, Zixu,Han, Wei-Qiang,&Ying, Hangjun.(2017).Ultrasmall Sn nanodots embedded inside N-doped carbon microcages as high-performance lithium and sodium ion battery anodes.JOURNAL OF MATERIALS CHEMISTRY A,5(18),8334-8342.
MLA	Zhang, Shunlong,et al."Ultrasmall Sn nanodots embedded inside N-doped carbon microcages as high-performance lithium and sodium ion battery anodes".JOURNAL OF MATERIALS CHEMISTRY A 5.18(2017):8334-8342.