Effects of Structure on Electrochemical Properties of Pyrolytic Carbon Anodes

Abstract

Abstract: Carhons were prepared at different temperatures by pyrolytic treatment of phenolformaldehyde resin molded with ZnCl₂ in advance. X-ray structure analyses have shown that these carbon are essentially amorphous with rather loose structure of molecular size order with an interlayer distance of 0.36—0.37 nm. Using electrochemical methods, we have studied the insertion of lithium within these materials. Resole resins, heated to 580 ℃, have a reversible capacity of about 400 mA·h/g, which is beyond the theoretical capacity of graphite(372 mA·h/g) and discover that carbons with a smaller crystallite size and large interlayer distance have the larger discharge capacity.

Key words: Resole resins, Pyrolysis, Carbon anodes

CLC Number:

O646.21

TrendMD:

XIE Zhong-Wei, ZHANG Xi-Yan, TIAN Yu-Mei, GONG-Jian, QU Xiao-Guang, QU Lun-Yu . Effects of Structure on Electrochemical Properties of Pyrolytic Carbon Anodes[J]. Chem. J. Chinese Universities, 2000, 21(7): 1110.

References

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