NDLI: Effect of cooling on the structure and electrochemical properties of 0.3Li$_{2}$MnO$_{3}$ · 0.7LiNi$_{0.5}$Mn$_{0.5}$O$

Content Provider	SpringerLink
Author	Zhang, Yufeng Zhang, Yanli Wang, Li He, Xiangming Yang, Juping Jin, Yuhong Zhang, Kai
Copyright Year	2015
Abstract	The cooling rate after annealing treatment was proved to be important for the structure and electrochemical performances of the layered oxide 0.3Li$_{2}$MnO$_{3}$ · 0.7LiNi$_{0.5}$Mn$_{0.5}$O$_{2}$ material, which has been synthesized using a sol–gel method. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), nondestructive nano-computed tomography (nano-CT), and Brunauer-Emmett-Teller (BET) surface area measurement were used to characterize the structure and micromorphology of the material. It was demonstrated that the material quenched by liquid nitrogen (AN-material) showed less defects in structure and larger specific surface area than the material cooled naturally (AF-material). Electrochemical measurement showed that the AN-material exhibited better electrochemical performance as cathode candidate for lithium-ion batteries. The initial discharge capacity and coulombic efficiency reached 277.4 mAh g$^{−1}$ and 84.1 % for AN-material, while 257.1 mAh g$^{−1}$ and 78.4 % for AF-material. In addition, the AN-material also exhibited lower charge transfer resistance than AF-material.
Starting Page	1819
Ending Page	1825
Page Count	7
File Format	PDF
ISSN	09477047
Journal	Ionics
Volume Number	21
Issue Number	7
e-ISSN	18620760
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-02-28
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	0.3Li$_{2}$MnO$_{3}$ · 0.7LiNi$_{0.5}$Mn$_{0.5}$O$_{2}$ Cooling rate Layered oxide Electrochemical performance Electrochemistry Renewable and Green Energy Optical and Electronic Materials Condensed Matter Physics Energy Storage
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Engineering Chemical Engineering Materials Science

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