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Author Liang, Chu ♦ Zhou, Luoting ♦ Zhou, Caihong ♦ Huang, Hui ♦ Liang, Sheng ♦ Xia, Yang ♦ Gan, Yongping ♦ Tao, Xinyong ♦ Zhang, Jun ♦ Zhang, Wenkui
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ CAPACITORS ♦ CAPACITY ♦ ELECTROCHEMISTRY ♦ LITHIUM ION BATTERIES ♦ MATERIALS ♦ MILLING ♦ PARTICLE SIZE ♦ SILICA ♦ SILICON OXIDES
Abstract Highlights: • The electrochemical performance of SiO{sub 2} is strongly associated with ball milling. • Submicron silica show superior cycling performance for lithium storage. • Mechanism of electrochemical performance of SiO{sub 2} depended on milling was discussed. - Abstract: Submicron silica (SiO{sub 2}) is prepared via directly milling bulk SiO{sub 2}, which is the major constituent of the abundant sand on the earth. The electrochemical lithium storage performance of SiO{sub 2} is found to be strongly associated with the ball milling treatment. The reversible capacity of SiO{sub 2} gradually increases from 163 to 803 mAh g{sup −1} as the milling time is extended from 0 to 72 h. For the SiO{sub 2} milled for 24 h, it exhibits excellent cycling performance with a discharge capacity of 602 mAh g{sup −1} over 150 cycles, corresponding to the capacity retention of 99.8% relative to the 2nd cycle. The different particle sizes distribution and electrochemical activity of SiO{sub 2} are responsible for the effect of ball milling on its electrochemical lithium storage performance such as reversible capacity, cycling stability, electrode polarization and initial Coulombic efficiency.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-12-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 96


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