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- W2895886309 endingPage "1800763" @default.
- W2895886309 startingPage "1800763" @default.
- W2895886309 abstract "It is of fundamental and technological significance to develop dual-role anode materials for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) with high performance. Here, a composite material based on CoSe2 nanoparticles encapsulated in N-doped carbon framework intertwined with carbon nanotubes (CoSe2@N-CF/CNTs) is prepared successfully from cobalt-based zeolitic imidazolate framework (ZIF-67). As anode materials for LIBs, CoSe2@N-CF/CNTs composites deliver a reversible capacity of 428 mAh g-1 even after 500 cycles at a current density of 1 A g-1 with almost 100% Coulombic efficiency. The charge and discharge mechanisms of CoSe2 are characterized using ex situ X-ray diffraction and Raman analysis, from which the lithiation products of CoSe2 are found to be Li x CoSe2 and Li2Se, which are further converted to CoSe2 upon delithiation. The CoSe2@N-CF/CNTs composites also demonstrate excellent electrochemical performance as anode materials for SIBs with a carbonate-based electrolyte, with specific capacities of 606 and 501 mAh g-1 at 0.1 and 1 A g-1 in the 100th cycle. The electrochemical performance of the anode materials is further studied by pseudocapacitance and galvanostatic intermittent titration technique (GITT) measurements. This work may be exploited for the rational design and development of dual-role anode materials for both Li- and Na-ion batteries." @default.
- W2895886309 created "2018-10-26" @default.
- W2895886309 creator A5002358964 @default.
- W2895886309 creator A5002654282 @default.
- W2895886309 creator A5006492209 @default.
- W2895886309 creator A5058980878 @default.
- W2895886309 creator A5067567789 @default.
- W2895886309 creator A5073747745 @default.
- W2895886309 creator A5079389787 @default.
- W2895886309 date "2018-10-17" @default.
- W2895886309 modified "2023-10-13" @default.
- W2895886309 title "CoSe<sub>2</sub> Nanoparticles Encapsulated by N-Doped Carbon Framework Intertwined with Carbon Nanotubes: High-Performance Dual-Role Anode Materials for Both Li- and Na-Ion Batteries" @default.
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