PPTA-based N-doped hard carbon microspheres as anode materials for Li-ion batteries
발표자
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초록
내용
Polymer-based hard carbon is a promising anode material for lithium-ion batteries due to its good rate capability and improved safety. The specific properties and performance characteristics of polymer-based hard carbon can be fine-tuned by selecting appropriate polymer precursors and optimizing the carbonization process. Microsized hard carbons offer several advantages, including structural stability, improved safety, enhanced initial Coulombic efficiency, cost-effectiveness, and versatility. In this study, poly(p-phenylene terephthalamide) (PPTA) microparticles were synthesized through a polycondensation reaction of p-phenylenediamine and terephthaloyl chloride. Their carbonization at 800-1000 °C produced highly N-doped hard carbon microspheres, which exhibited higher initial Coulombic efficiency, excellent rate performance, and cycle stability.