METHOD FOR PREPARING POROUS CARBON MATERIAL

• Main Authors: YANG SEUNG BO, KIM BONG SOO, KANG DA YOUNG, KIM MIN SU
• Format: Patent
• Language: English; Korean
• Published: 04.06.2024
• Subjects: ADHESIVES; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BASIC ELECTRIC ELEMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOUNDS THEREOF; DYES; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NATURAL RESINS; NON-METALLIC ELEMENTS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPINNING; TEXTILES; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES

본 발명은 다공성 탄소재를 원심 분쇄기를 이용하여 분쇄하고, 이를 목적하는 다공성 탄소재의 입경 D50 대비 2.8 내지 4배의 메쉬 크기를 갖는 체로 거르는 단계를 포함하여, 입경이 제어된 다공성 탄소재를 제조하는 방법에 관한 것이다. The present disclosure relates to a positive electrode for a lithium-sulfur battery and a lithium-sulfur battery comprising the same, and the positive electrode comprises a porous carbon material having low tap density manufactured by centrifugal milling, thereby achieving high porosity and forming a thick active material layer for the same carbon amount. Accordingly, the positive electrode achieves a lithium-sulfur battery with high energy density.