کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1605455 1516210 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Facile synthesis of sandwich-structured Li3V2(PO4)3/carbon composite as cathodes for high performance lithium-ion batteries
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Facile synthesis of sandwich-structured Li3V2(PO4)3/carbon composite as cathodes for high performance lithium-ion batteries
چکیده انگلیسی


• A sandwich-structured LVP/C is prepared by a facile soft chemistry route.
• MOF-derived nitrogen-doped carbon is used to improve the conductivity.
• The structure can accommodate volume changes in repeated cycles in LIBs.
• The LVP/C shows excellent rate capability and long-term cycling stability.

A sandwich-structured Li3V2(PO4)3/carbon (LVP/C) composite has been facilely prepared through a soft chemistry route and its electrochemical performance has been investigated. The conductivity of the electrode material can be greatly improved by the introduction of metal–organic frameworks (MOFs) derived nitrogen-doped carbon, leading to its superior rate performance in lithium ion batteries. The carbon particles with diameters of 200–300 nm are uniformly dispersed in the composite. Meanwhile, the interconnected carbon particles form a carbon matrix surrounding the LVP flakes, constructing a sandwich-like structure. This structure provides ample space for accommodating the volume change of LVP during repeated cycles, and highly improves the electronic conductivity of the composites. Thanks to this, high capacity retention can be attained in ultralong cycles (83% after 2500 cycles) at high rate (5C).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 683, 25 October 2016, Pages 178–185
نویسندگان
, , , , , ,