Development of Carbonized Conductive Polymer/Lignin Composites Anode for Lithium-ion Batteries
발표자
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초록
내용
Lignin, a byproduct of the pulp and paper industry, is an attractive low-cost precursor to hard carbon due to the high carbon content (~60 %) and three-dimensional structure. In this study, a conductive polymer/lignin composite was synthesized through a simple dispersion and polymerization process, and then carbonized to produce nitrogen-doped hard carbon. Lithium-ion batteries with carbonized conductive polymer/lignin composite as the anode demonstrate an enhanced electrochemical performance compared to those using only carbonized lignin. Specifically, the carbonized composite shows an initial discharge capacity approximately 2.7 times higher than carbonized lignin and exceeded the theoretical capacity of graphite (372 mAh/g). Furthermore, stable charge and discharge behavior was observed at high rates with superior capacity retention compared to 0.1 C-rate, indicating its potential as an anode material for lithium-ion batteries.