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organosilicon modified method to improve Li^+ storage capacity of graphene oxide (GO)

Science China(Technological Sciences) 2020年第12期63卷 2709-2716页

作者： WANG Kun JU DongYing XU GuiYing HAN BeiBei CHAI MaoRong WANG YingXin Li LiXiang ZHANG XueHu UCIDA Masaya ZHOU WeiMin Key Laboratory of Energy Materials and Electrochemistry Research Liaoning Province School of Chemical EngineeringUniversity of Science and Technology LiaoningAnshan 114051China School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051China Advanced Science Research Laboratory Saitama Institute of Technology1690 FusaijiFukayaJapan JiXi Weida New Material Technology Co. LtdJixi 158100China

organosilicon modified reduced graphene oxide(Mr GO) has been fabricated by direct organosilicon modification of graphene oxide(GO). Interestingly,it is observed that 3D rGO-like structures occurred after directly carrying out the organosilicon modification on the surface of GO. The obtained organosilicon Mr GO displays the more remarkable improvement of electrochemical performances than GO,which was verified by electrochemical measurements in detail. For instance,the organosilicon MrGO shows the cycling performances at 901 mA hg^-1 after 200 cycles at 0.1 Ag^-1 and 446 mA hg^-1 after 300 cycles at 2.0 Ag^-1,respectively. These results unveil that organic modification method is an effective way to improve the Li^+ storage capacity of general carbon materials.

关键词： graphene oxide(GO) surface modification organosilicon modification 3D rGO-like structure organic-inorganic concept lithium ion batteries(LIBs)

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SYNTHESES AND CHARACTERIZATI0N OF Si-CONTAINING POLYESTER-POLYETHER MULTIBLOCK COPOLYMERS

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Chinese Journal of Polymer Science 1996年第3期14卷 277-283页

作者：李贞宜朱锦 Institute of Chemistry Academia Sinica Beijing 100080

A series of Si-containing polyester-polyether multiblock copolymers were synthesizedby transesterification and melt copolycondensation of organosilicon monomers [1, 1, 3, 3-tetramethyl-1, 3-bis （p-carbomethoxyphenyl） disiloxane] （I ） or dimethyl bis （p-carbometh-oxyphenyl） silane] （II） and dimethyl terephthalate （DMT）, with 1, 4-butanediol, poly-tetramethylene glycol （PTMG） respectively. The organosilicon monomers were preparedby Grinard reaction, oxidation and esterification. The structures of the above monomers（I）, （II） and the copolymers were characterized by MS anal. and;H-NMR.

关键词： 1,1,3,3-Tetramethyl-1, 3-bis (p-carbomethoxylphenyl) disiloxane Dimethyl bis (p-carbomethoxylphenyl) silane Polyester-polyether organosilicon modification

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STUDY ON SOME PROPERTIEE OF Si-CONTAINING POLYESTER-POLYETHER MULTIBLOCK COPOLYMERS

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Chinese Journal of Polymer Science 1997年第4期15卷 289-294页

作者：李贞宜朱锦 Institute of Chemistry Academia Sinica Beijing 100080 China

Some physical properties of the polyester-polyeher multiblock copolymers with Si-containing hard segment were further examined by a series of physical methods. Thehydrophobicity of the copolymers was improved with the incorporation of increasing amountof organosilicone, XPS test proved that silicon element was enriched at the surface of theSi-containing polyeser-polyether copolymers. It was also found that their heat resistanceand gas permeability for O_2 and N_2 were greatly improved. The study on semipermeabilityof films made of the Si-containing copolymers was also followed with interest.

关键词： Polyester-polyether copolymers organosilicon modification

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