Study on Composite of Porous Si and Disordered Carbon as Anode Materials for Lithium Ion Batteries

Jing Wang; Jia Li; Feng Wu; Shi Chen

doi:10.4028/www.scientific.net/AMR.608-609.1327

Paper Titles

A High Light Response of Silicon P-I-N Detector by an AR Thin Film
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A Design Method of Supersonic Separator Used in Natural Gas Liquefaction Process
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Effect of Annealing Temperature on Electrical Properties of ZnTe Layers Grown by Thermal Evaporation
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Preparation and Properties of PEDOT/PSS Conductive Polymer Blended with Graphene/PVDF
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Study on Composite of Porous Si and Disordered Carbon as Anode Materials for Lithium Ion Batteries
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Excess Heat Triggered by Electrical Current in a D/Pd Gas-Loading System
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Preparation of Silicalite-1 Membranes on α-Al₂O₃ Tubes and its Concentration Performance of Low Ethanol/water Mixtures
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Effect of Synthesis Process of Polyaniline for the Zn-PANi Secondary Batteries
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Impact of Substitution of M (M=Mn, Cu) for Ni on Hydriding and Dehydriding Kinetics of as-Spun Nanocrystalline and Amorphous Mg₂Ni-Type Alloys
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 608-609Study on Composite of Porous Si and Disordered...

Study on Composite of Porous Si and Disordered Carbon as Anode Materials for Lithium Ion Batteries

Abstract:

Silicon and related materials have recently received considerable attention as potential anodes in Li-ion batteries for their high theoretical speciﬁc capacities. To overcome the problem of volume change , composites comprising porous silicon, disordered carbon (DC) have been prepared by pyrolyzing the critic acid. This composite anode material showed a discharge capacity of 1390 mAh/g in the first cycle, and the initial columbic efficiency is 70%. After 20 cycles, the discharge capacity of the material is 511 mAh/g. The improved stability of this material is hypothesized to depend on the unique structure of porous Si and the coated DC. The morphologies of the composites were systematically investigated by the X-ray diffraction and scanning electron microscopy. It can be observed that porous Si particles were embedded into the matrix of the DC. The capacity and cycling stability of the composites were systematically evaluated by electrochemical charge/discharge tests.