Hydrogen Adsorption of PAN-based Porous Carbon Nanofibers using MgO as the Substrate
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 10권 / 3호
ㆍ저자명 : Min-Jung Jung, Ji Sun Im, Euigyung Jeong, Hangkyo Jin, Young-Sea
ㆍ저자명 : Min-Jung Jung, Ji Sun Im, Euigyung Jeong, Hangkyo Jin, Young-Sea
목차
1. Introduction2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgement
References
한국어 초록
In this study, porous electrospun carbon fibers were prepared by electrospinning with PAN and MgCl2, as a MgO precursor.MgO was selected as a substrate because of its chemical and thermal stability, no reaction with carbon, and ease of removal after
carbonization by dissolving out in acidic solutions. MgCl2 was mixed with polyacrylonitrile (PAN) solution as a precursor of
MgO with various weight ratios of MgCl2/PAN. The average diameter of porous electrospun carbon fibers increased from 1.3 to
3 μm, as the MgCl2 to PAN weight ratio increased. During the stabilization step, MgCl2 was hydrolyzed to MgOHCl by heat
treatment. At elevated temperature of 823 K for carbonization step, MgOHCl was decomposed to MgO. Specific surface area and
pore structure of prepared electrospun carbon fibers were decided by weight ratio of MgCl2/PAN. The amount of hydrogen
storage increased with increase of specific surface area and micropore volume of prepared electrospun carbon fibers.
영어 초록
In this study, porous electrospun carbon fibers were prepared by electrospinning with PAN and MgCl2, as a MgO precursor.MgO was selected as a substrate because of its chemical and thermal stability, no reaction with carbon, and ease of removal aftercarbonization by dissolving out in acidic solutions. MgCl2 was mixed with polyacrylonitrile (PAN) solution as a precursor ofMgO with various weight ratios of MgCl2/PAN. The average diameter of porous electrospun carbon fibers increased from 1.3 to3 μm, as the MgCl2 to PAN weight ratio increased. During the stabilization step, MgCl2 was hydrolyzed to MgOHCl by heattreatment. At elevated temperature of 823 K for carbonization step, MgOHCl was decomposed to MgO. Specific surface area andpore structure of prepared electrospun carbon fibers were decided by weight ratio of MgCl2/PAN. The amount of hydrogenstorage increased with increase of specific surface area and micropore volume of prepared electrospun carbon fibers.참고 자료
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