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题名:
Fabrication of graphene-encapsulated Na3V2(PO4)(3) as high-performance cathode materials for sodium-ion batteries
作者: Tao, S; Wang, XB; Cui, PX; Wang, Y; Haleem, YA; Wei, SH; Huang, WF; Song, L; Chu, WS
刊名: RSC ADVANCES
出版日期: 2016
卷号: 6, 期号:49, 页码:43591—43597
关键词: CARBON-COATED NA3V2(PO4)(3) ; ELECTROCHEMICAL INTERCALATION ; ELECTRODE MATERIAL ; HIGH-POWER ; COMPOSITE ; OXIDE ; NANOPARTICLES ; ENHANCEMENT ; STORAGE
DOI: 10.1039/c6ra04237f
通讯作者: Song, L ; Chu, WS (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China.
文章类型: 期刊文献
英文摘要: Na3V2(PO4)(3) (NVP) has been in the spotlight as a potential candidate of next generation batteries to overcome the limitation of lithium resources on Earth. Here a thin-layer graphene-encapsulated NVP composite (NVP/G) was synthesized by self-assembly of surface modified NVP and graphene oxide and then followed by reduction to compensate for the intrinsic low electronic conductivity of NVP and strengthen its structure stability. The as-synthesized hybrid composite as a cathode for sodium-ion batteries (SIBs) exhibits excellent high specific capacity and superior rate performance with discharge capacities of 115.2 mA h g(-1) at 0.2 C and 70.1 mA h g(-1) at 30 C, It also shows an excellent cycling stability with about 86.0% capacity retention at 5 C after 300 cycles. Ex situ X-ray absorption spectroscopy (XAS) characterization confirmes the local geometrical environment around vanadium is highly conserved during the sodiation/desodiation process, associated with an electrochemically active V3+/V4+ redox couple. Hence the as-prepared hybrid composite can be considered as a promising cathode material for high-rate SIBs, thanks to the effect interface interaction between NVP nanoparticle sand graphene films.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000375611100095
ISSN号: 2046-2069
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25724
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Tao, S,Wang, XB,Cui, PX,et al. Fabrication of graphene-encapsulated Na3V2(PO4)(3) as high-performance cathode materials for sodium-ion batteries[J]. RSC ADVANCES,2016-01-01,6(49):43591—43597.
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