Characteristics of hydrogen adsorption on chemical activated electrospun carbon nanofibers

Ji Sun Im, Soo Jin Park, Young Seak Lee

Research output: Contribution to conferencePaperpeer-review

Abstract

Polyacrylonitrile (PAN) based carbon nanofibers (CNFs) were prepared by using electrospinning method and heat treatment to get the media for hydrogen adsorption storage. Potassium hydroxide and zinc chloride activations were conducted to increase specific surface area and pore volume of CNFs. To investigate the relation between pore structure and the capacity of hydrogen adsorption, textural properties of activated CNFs were studied with micropore size distribution, specific surface area, and total pore volume by using BET (Brunauer-Emmett-Teller) surface analyzer apparatus and the capacity of hydrogen adsorption was evaluated by PCT (Pressure-Composition-Temperature) hydrogen adsorption analyzer apparatus with volumetric method. The surface morphology of activated CNFs was observed by SEM (Scanning-Electron-Microscope) images to investigate the surface change through activation. Even though specific surface area and total pore volume were important factors for increasing the capacity of hydrogen adsorption, the pore volume which has pore width (0.6-0.7 nm) was a much more effective factor than specific surface area and pore volume in PAN based electrospun activated CNFs.

Original languageEnglish
StatePublished - 2007
Event7th World Congress: Enabling Technologies and New Markets, Nanocomposites 2007 - Las Vegas, NV, United States
Duration: 5 Sep 20077 Sep 2007

Conference

Conference7th World Congress: Enabling Technologies and New Markets, Nanocomposites 2007
Country/TerritoryUnited States
CityLas Vegas, NV
Period5/09/077/09/07

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