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Fabrication of graphene-encapsulated Na3V2(PO4)(3) as high-performance cathode materials for sodium-ion batteries
Tao, S; Wang, XB; Cui, PX; Wang, Y; Haleem, YA; Wei, SH; Huang, WF; Song, L; Chu, WS; Chu, WS (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China.
2016
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume6Issue:49Pages:43591—43597
Subtype期刊文献
AbstractNa3V2(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.
KeywordCarbon-coated Na3v2(Po4)(3) Electrochemical Intercalation Electrode Material High-power Composite Oxide Nanoparticles Enhancement Storage
DOI10.1039/c6ra04237f
Indexed BySCI
Language英语
WOS IDWOS:000375611100095
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25724
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorSong, L; Chu, WS (reprint author), Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Anhui, Peoples R China.
Recommended Citation
GB/T 7714
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,2016,6(49):43591—43597.
APA Tao, S.,Wang, XB.,Cui, PX.,Wang, Y.,Haleem, YA.,...&Chu, WS .(2016).Fabrication of graphene-encapsulated Na3V2(PO4)(3) as high-performance cathode materials for sodium-ion batteries.RSC ADVANCES,6(49),43591—43597.
MLA Tao, S,et al."Fabrication of graphene-encapsulated Na3V2(PO4)(3) as high-performance cathode materials for sodium-ion batteries".RSC ADVANCES 6.49(2016):43591—43597.
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