Facile synthesis and electrochemical performance of hollow SiO@ Void@ C composite as anode material for lithium-ion batteries
LIU Xin
Abstract：SiO@ Void@ C composite with a hollow structural feature was obtained through a facile HF etching process with commercial SiO @ C as a raw material.Physical and electrochemical characteristics of the composite are researched by using XRD,SEM,cycling tests and other typi-cal techniques.Influence of a calender process on the structure and cycling performance of the e-lectrodes is discussed.It is show n that in a condition of a low press density,the hollow SiO@Void@ C composite shows a superior electrochemical performance with a high reversible capacity of 1305mAh/g,a long cycling stability with a capacity retention of 54% after 500 cycles,which values are significantly better than the bare SiO@ C material.However,the hollow structure of SiO@ Void@ C composite can be severely destroyed with a high pressure,resulting in a strongly decreased cycling performance.Therefore the actual commercialization process of Si - based anode materials with the hollow structure is still suffering from big challenges.
Keywords：SiOHollow structureHF etchingCalanderLithium-ion batteries
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 3-9 )