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Study on Highly Compacted LiFePO4 / C Cathode Materials for High-performance 18650 Li-ion Batteries
Chen, L; Chen, ZY; Liu, SS; Zhang, HT; Huang, QZ; Chen, Lei; Chen, Zhenyu; Liu, Shuaishuai; Zhang, Haitao; Huang, Quanzhen
2018
Source PublicationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN1452-3981
Volume13Issue:6Pages:5413
Abstract

The porous spherical LiFePO4 (LFP) nanostructures were synthesized by a spray drying technology, followed by a calcination process. Effect of compacted density on the electrochemical performance of the 18650 cells, which employed as-prepared spherical LFP materials, was investigated systemically. The morphology study and physical characterization results show that the spherical LFP/C are composed of numerous particles with an average size of 300 nm, and have well-developed interconnected pore structure and a specific surface area of 12-15 m(2)/g. For CR2032 coin-type cell, the specific discharge capacity of the LFP/C was 162-164 mAh/g at 0.2C, and the capacity retention can reach up to 100% after 50 cycles at 1 C. For 18650 batteries, the cathode slurry viscosity of the LFP/C with LiOH as lithium source is larger than that with Li2CO3 as lithium source. For the sintering temperature of the LFP material is reduced to 700 degrees C, meanwhile the carbon content is reduced to 1.1%, the compacted density of the LFP material electrode can reach 2.47 g/cm(3).

KeywordPorous Spherical Lifepo4 Electrochemical Properties 18650 Cells Lithium Highly Compacted Density Behavior Cathode Slurry Viscosity
SubtypeArticle
DOI10.20964/2018.06.21
WOS IDWOS:000436261400022
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26748
Collection中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Chen, L,Chen, ZY,Liu, SS,et al. Study on Highly Compacted LiFePO4 / C Cathode Materials for High-performance 18650 Li-ion Batteries[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2018,13(6):5413.
APA Chen, L.,Chen, ZY.,Liu, SS.,Zhang, HT.,Huang, QZ.,...&Huang, Quanzhen.(2018).Study on Highly Compacted LiFePO4 / C Cathode Materials for High-performance 18650 Li-ion Batteries.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,13(6),5413.
MLA Chen, L,et al."Study on Highly Compacted LiFePO4 / C Cathode Materials for High-performance 18650 Li-ion Batteries".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 13.6(2018):5413.
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