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리그닌-PAN 공중합체로 제조한 다공성 탄소 소재의 활성화 처리 조건에 따른 비표면적 특성 연구
Specific Surface Area Characteristic Analysis of Porous Carbon Prepared from Lignin-Polyacrylonitrile Copolymer by Activation Conditions 원문보기

목재공학 = Journal of the Korean wood science and technology, v.49 no.4, 2021년, pp.299 - 314  

LEE, Hyunsu (Forest Industrial Materials Division, National Institute of Forest Science) ,  KIM, Seokju (Forest Industrial Materials Division, National Institute of Forest Science) ,  PARK, Mi-Jin (Forest Industrial Materials Division, National Institute of Forest Science)

초록
AI-Helper 아이콘AI-Helper

본 연구에서는 리그닌 기반 다공성 탄소(lignin-based porous carbon; LBPC)를 수산화칼륨(KOH)으로 활성화할 때 온도가 비표면적과 전기화학적 특성에 미치는 영향을 알아보았다. 리그닌과 acrylonitrile을 그라프트 중합으로 합성한 리그닌-polyacrylonitrile (PAN) 공중합체전구체로 하여 LBPC를 제조한 후 LBPC를 KOH로 600, 700, 800, 900℃에서 활성화하여 활성화 처리한 LBPC (KA-LBPC-6, 7, 8, 9)를 제조하였다. KA-LBPC의 표면 특성을 알아보기 위해 주사전자현미경으로 관찰하였으며, 비표면적 분석을 통해 기공 특성을 파악하였다. 전기화학적 특성은 3전극 시스템으로 분석하였다. 실험 결과 SEM 사진상에서 활성화 처리에 의한 미세기공 형성을 관찰하였다. KA-LBPC-7의 비표면적은 2480.1 m2/g, 미세기공 부피는 0.64 cm3/g, 중기공 부피는 0.76 cm3/g으로 KA-LBPC 중에서 가장 좋은 기공 특성을 보였다. 전기화학적 특성 역시 2 mV/s의 주사속도에서 비정전용량이 151.3 F/g이었던 KA-LBPC-7이 가장 좋은 것으로 나타났다.

Abstract AI-Helper 아이콘AI-Helper

In this study, we investigated the effect of temperature on specific surface area and electrochemical properties when lignin-based porous carbon (LBPC) with potassium hydroxide (KOH) is activated. After preparing LBPCs using lignin-polyacrylonitrile (PAN) copolymer, which was synthesized by graft po...

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표/그림 (10)

참고문헌 (45)

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