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Jung, Yoon Seok
Electrochemical Solid-State Energy Storage Lab
Research Interests
  • Batteries, All-solid-state batteries, solid electrolytes, electrodes, atomic layer deposition,energy storage devices

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A simple preparation method for spherical carbons and their anodic performance in lithium secondary batteries

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dc.contributor.author Kwon, OJ ko
dc.contributor.author Jung, Yoon Seok ko
dc.contributor.author Kim, JH ko
dc.contributor.author Oh, SM ko
dc.date.available 2014-10-30T00:10:19Z -
dc.date.created 2014-10-29 ko
dc.date.issued 2004-01 -
dc.identifier.citation JOURNAL OF POWER SOURCES, v.125, no.2, pp.221 - 227 ko
dc.identifier.issn 0378-7753 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/8021 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0346969747 ko
dc.description.abstract This work reports a simple preparation method for spherical hard carbons and graphites. The phenolic resin and methylnaphthalene-derived mesophase pitch (MNMP) powders are employed as the precursor for hard carbon and graphite, respectively. The irregular-shaped precursor powders are converted to spherical carbons by first coating with fine-grained fumed silica powder and carbonizing/graphitizing under an argon atmosphere. Two characteristic features are observed in this preparation. First, among the used silica powders, only those having a hydrophobic surface group are effective for the irregular to sphere conversion. Second, the conversion takes place near the glass transition temperature of the resin and the softening point of the pitch, respectively. Based on these observations, an irregular to sphere conversion mechanism has been proposed. The spherical carbon powders exhibit a higher tap density and smaller surface area than those of the irregular-shaped ones, which is an advantageous feature for practical lithium batteries. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCIENCE BV ko
dc.subject Graphitic carbons ko
dc.subject Hard carbons ko
dc.subject Lithium secondary batteries ko
dc.subject Mesophase pitches ko
dc.subject Spherical carbons ko
dc.title A simple preparation method for spherical carbons and their anodic performance in lithium secondary batteries ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0346969747 ko
dc.identifier.wosid 000188379400011 ko
dc.type.rims ART ko
dc.description.wostc 16 *
dc.description.scopustc 16 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-10-29 *
dc.identifier.doi 10.1016/j.jpowsour.2003.08.012 ko
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