NDLI: Spindle LiFePO$_{4}$ particles as cathode of lithium-ion batteries synthesized by solvothermal method with glucose as auxiliary reductant

Content Provider	Springer Nature Link
Author	Ren, Li Li, Xing En Wang, Fang Fang Han, Yang
Copyright Year	2013
Abstract	The well-distribution spindle LiFePO$_{4}$ (LFP) nanoparticles as cathode of lithium secondary batteries were synthesized by a solvothermal reaction route at low temperature (180 °C) in which the ascorbic acid was used as reducing agent. In order to guarantee that the pH values of thermal systems were not affected too much and the reducibility of the system was enhanced at the same time, glucose was chosen as an auxiliary reductant in this reaction. The obtained powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and laser particle analyzer. The results show that the carbon-coated uniform spindle olivine LiFePO$_{4}$/C-glucose particles (glucose as auxiliary reductant, LFP/C-G) are prepared with the size 500–600 nm and without any impurity phases. Their electrochemical properties were evaluated by electrochemical impedance spectroscopy, cyclic voltammetry, and galvanostatic charge/discharge tests. LFP/C-G has a higher conductivity and better reversible capability than carbon-coated LFP (LFP/C). The highest discharge capacity of LFP/C-G is 161.3 mAh·g$^{−1}$ at 0.1C and 108.6 mAh·g$^{−1}$ at 5.0C, respectively. The results imply that the neat crystal nanostructure of LFP/C-G has excellent capacity retention and cycling stability. The adding of glucose is the key factor for the well-distribution and neat crystal structure of nanoparticles, thus the electrochemical performances of materials are improved.
Starting Page	731
Ending Page	737
Page Count	7
File Format	PDF
ISSN	10010521
Journal	Rare Metals
Volume Number	34
Issue Number	10
e-ISSN	18677185
Language	English
Publisher	Nonferrous Metals Society of China
Publisher Date	2013-09-11
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lithium-ion battery LiFePO$_{4}$ Spindle Solvothermal Glucose Metallic Materials Nanotechnology Ceramics, Glass, Composites, Natural Methods Surfaces and Interfaces, Thin Films Inorganic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Physical and Theoretical Chemistry Condensed Matter Physics

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