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Tetradecanol/expanded graphite composite form-stable phase change material for thermal energy storage.

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Title: Tetradecanol/expanded graphite composite form-stable phase change material for thermal energy storage.
Authors: Zeng, Ju-Lan1 julan_zeng@163.com, Gan, Juan1, Zhu, Fu-Rong1, Yu, Sai-Bo2, Xiao, Zhong-Liang1, Yan, Wen-Pei1, Zhu, Ling1, Liu, Zhen-Qiang1, Sun, Li-Xian1, Cao, Zhong1
Source: Solar Energy Materials & Solar Cells. Aug2014, Vol. 127, p122-128. 7p.
Subject Terms: *Heat storage, Decanol, Graphite composites, Chemical stability, Phase change materials, Thermal conductivity
Abstract: Abstract: Natural flake graphite was chemically intercalated to prepare expandable graphite. The expandable graphite was then expanded by means of microwave irradiation to obtain expanded graphite (EG). Tetradecanol (TD)/EG composite form-stable phase change materials (PCMs) were prepared by mixing TD with EG through an autoclave method. The highest loading of TD in the composite form-stable PCMs with good form-stability was 93wt%. The composite form-stable PCMs exhibited excellent thermal energy storage capacity. The melting enthalpy (ΔH m) and crystallization enthalpy (ΔH c) of the composite form-stable PCM containing 93wt% TD were 202.6 and 201.2J/g, respectively. However, the solid–solid phase transition of TD in the composite form-stable PCMs was hindered as TD was strongly absorbed by EG. As a result, the ΔH m and ΔH c of the composite form-stable PCMs were slightly lower than the theoretical value. The thermal conductivity of the composite form-stable PCMs was greatly enhanced by EG and was increased with the increasing of EG loading. The thermal conductivity of the composite form-stable PCM containing 7wt% EG attained 2.76W/mK. Besides, effects of the prepared EG on properties of the composite form-stable PCMs were compared with those of EG derived from commercially obtained expandable graphite. [Copyright &y& Elsevier]
Copyright of Solar Energy Materials & Solar Cells is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 96346981
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Tetradecanol/expanded graphite composite form-stable phase change material for thermal energy storage.
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  Data: <searchLink fieldCode="AR" term="%22Zeng%2C+Ju-Lan%22">Zeng, Ju-Lan</searchLink><relatesTo>1</relatesTo><i> julan_zeng@163.com</i><br /><searchLink fieldCode="AR" term="%22Gan%2C+Juan%22">Gan, Juan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Fu-Rong%22">Zhu, Fu-Rong</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yu%2C+Sai-Bo%22">Yu, Sai-Bo</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Zhong-Liang%22">Xiao, Zhong-Liang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yan%2C+Wen-Pei%22">Yan, Wen-Pei</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Ling%22">Zhu, Ling</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Zhen-Qiang%22">Liu, Zhen-Qiang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sun%2C+Li-Xian%22">Sun, Li-Xian</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cao%2C+Zhong%22">Cao, Zhong</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Solar+Energy+Materials+%26+Solar+Cells%22">Solar Energy Materials & Solar Cells</searchLink>. Aug2014, Vol. 127, p122-128. 7p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Heat+storage%22">Heat storage</searchLink><br /><searchLink fieldCode="DE" term="%22Decanol%22">Decanol</searchLink><br /><searchLink fieldCode="DE" term="%22Graphite+composites%22">Graphite composites</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+stability%22">Chemical stability</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+change+materials%22">Phase change materials</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Natural flake graphite was chemically intercalated to prepare expandable graphite. The expandable graphite was then expanded by means of microwave irradiation to obtain expanded graphite (EG). Tetradecanol (TD)/EG composite form-stable phase change materials (PCMs) were prepared by mixing TD with EG through an autoclave method. The highest loading of TD in the composite form-stable PCMs with good form-stability was 93wt%. The composite form-stable PCMs exhibited excellent thermal energy storage capacity. The melting enthalpy (ΔH m) and crystallization enthalpy (ΔH c) of the composite form-stable PCM containing 93wt% TD were 202.6 and 201.2J/g, respectively. However, the solid–solid phase transition of TD in the composite form-stable PCMs was hindered as TD was strongly absorbed by EG. As a result, the ΔH m and ΔH c of the composite form-stable PCMs were slightly lower than the theoretical value. The thermal conductivity of the composite form-stable PCMs was greatly enhanced by EG and was increased with the increasing of EG loading. The thermal conductivity of the composite form-stable PCM containing 7wt% EG attained 2.76W/mK. Besides, effects of the prepared EG on properties of the composite form-stable PCMs were compared with those of EG derived from commercially obtained expandable graphite. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Solar Energy Materials & Solar Cells is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.solmat.2014.04.015
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      – Code: eng
        Text: English
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        PageCount: 7
        StartPage: 122
    Subjects:
      – SubjectFull: Heat storage
        Type: general
      – SubjectFull: Decanol
        Type: general
      – SubjectFull: Graphite composites
        Type: general
      – SubjectFull: Chemical stability
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      – SubjectFull: Phase change materials
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      – SubjectFull: Thermal conductivity
        Type: general
    Titles:
      – TitleFull: Tetradecanol/expanded graphite composite form-stable phase change material for thermal energy storage.
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            – D: 01
              M: 08
              Text: Aug2014
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              Y: 2014
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