Electrochemical characteristics of semi conductive silicon anode for lithium polymer batteries

• Published in: Journal of electroceramics Vol. 24; no. 4; pp. 308 - 312
• Main Authors: Andreas Arie, Arenst, Chang, Wonyoung, Kee Lee, Joong
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.06.2010; Springer Nature B.V
• Subjects: Anodes; Batteries; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Crystallography and Scattering Methods; Electric batteries; Electrochemistry; Electrodes; Glass; Lithium; Materials Science; Natural Materials; Optical and Electronic Materials; Semifabricated products; Silicon; X-ray photoelectron spectroscopy; Thin films; Semi conductive; Lithium polymer battery; Impedance
• ISSN: 1385-3449; 1573-8663
• DOI: 10.1007/s10832-009-9573-z

In this paper, the electrochemical characteristics of semi conductive silicon thin films (n-type and p-type silicon) anodes integrated with the solid polymer electrolyte for lithium polymer batteries were investigated. The charge/discharge cycling tests revealed that the phosphorus-doped n-type silicon electrode shows the most stable cyclic performance after the 40 th cycle and still maintains a reversible specific capacity of about 2,500 mAh/g. The enhanced electrochemical performance of the doped silicon anode was attributed to the enhancement of its electrical conductivity, which was further confirmed by impedance spectroscopy and surface analysis by XPS.