Si/C Composites for High Capacity Lithium Storage Materials

Junfeng Yang; B. F. Wang; K. Wang; Y. Liu; Jian Xie; Zhongsheng Wen

doi:10.1149/1.1585251

Abstract

Thermal pyrolysis of polyvinyl chloride dispersed with nanosized silicon and fine graphite particles at 900°C produces a novel Si/C composite for lithium storage material. Incorporated silicon provides major capacity for lithium insertion, while the introduction of graphite component suppresses the initial irreversibility and hysteresis between charge and discharge caused by pyrolyzed carbon. The first cycle efficiency of the composite is about 85%. The large reversible capacity of ca. 700 mAh/g and good cyclability indicates that such Si/C composite may be a useful alternative to conventional graphite-based anode materials for lithium-ion cells. © 2003 The Electrochemical Society. All rights reserved.

Keywords

Materials scienceGraphiteLithium (medication)Composite numberAnodePyrolysisSiliconCarbon fibersHysteresisElectrochemistryComposite materialChemical engineeringElectrodeMetallurgyChemistry

Affiliated Institutions

Shanghai Institute of Microsystem and Information Technology CN

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Publication Info

Year: 2003
Type: article
Volume: 6
Issue: 8
Pages: A154-A154
Citations: 218
Access: Closed

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APA Style

                            
                                
                                    Junfeng Yang, 
                                
                                    B. F. Wang, 
                                
                                    K. Wang
                                
                                et al.
                            
                            (2003). 
                            Si/C Composites for High Capacity Lithium Storage Materials. 
                            Electrochemical and Solid-State Letters
                            , 6
                            (8)
                            , A154-A154.
                            https://doi.org/10.1149/1.1585251
                        

Identifiers

DOI: 10.1149/1.1585251