Optimizing pyrolysis of sugar carbons for use as anode materials in lithium-ion batteries

Journal Article · Tue Oct 01 04:00:00 EDT 1996 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1837162· OSTI ID:404650

Xing, W; Xue, J S; Dahn, J R ^[1]

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1. Simon Fraser Univ., Burnaby, British Columbia (Canada). Dept. of Physics

Table sugar was pyrolyzed under various conditions. Carbons of pyrolyzed sugar demonstrated high capacity for Li intercalation, exceeding that of graphite. Experiments were carried out to search for optimal pyrolyzing conditions. The electrochemical behavior of these carbons was found to depend on the pyrolysis temperature, heating rate, argon gas flow rate, and morphology of the precursors. Pyrolysis of sugar was also carried out under vacuum, which is equivalent to a high argon gas flow. Carbons of pyrolyzed sugar under optimal conditions showed large reversible capacity, {approx} 650 mAh/g, small irreversible capacity, {le} 170 mAh/g, and small hysteresis between discharge and charge in carbon/Li metal electrochemical test cells. Pyrolyzed sugar carbons are therefore potential candidates as anode materials in Li-ion batteries.

• Sponsoring Organization: USDOE
• OSTI ID: 404650
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 10 Vol. 143; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
25 ENERGY STORAGE
36 MATERIALS SCIENCE
ANODES
ELECTRICAL PROPERTIES
IMPREGNATION
LITHIUM
METAL-NONMETAL BATTERIES
PERMEABILITY
PYROLYSIS
PYROLYTIC CARBON
SACCHAROSE