Show simple item record

dc.contributor.authorZhao, Yansong
dc.contributor.authorZhen, Yingpeng
dc.contributor.authorJelle, Bjørn Petter
dc.contributor.authorBoström, Tobias
dc.date.accessioned2017-09-06T13:33:49Z
dc.date.available2017-09-06T13:33:49Z
dc.date.issued2016-11-02
dc.description.abstractThermal conductivity and thermal diffusivity of ionic liquids (ILs) are investigated in this work. A hot disk method for ILs thermal conductivity and thermal diffusivity measurement is utilized. Firstly, the thermal conductivity of water is measured to check the reliability of the hot disk method. In addition, the thermal conductivity of pure ILs, including BmimBF<sub>4</sub>, BmimPF<sub>6</sub>, OmimCl, BmimFeCl<sub>4</sub>, and OmimFeCl<sub>4</sub>, is measured. By comparison with thermal conductivity values of water, BmimBF<sub>4</sub>, and BmimPF<sub>6</sub> in the literatures, it is found that the thermal conductivity values of ILs using hot disk method have high reliability. Therefore, the hot disk method is utilized for thermal conductivity measurement of ILs in this work. The experimental results also show that all the average thermal conductivity values of the five pure ILs are no more than 0.1898 W m<sup>−1</sup> K<sup>−1</sup>, which is much lower than the average measured thermal conductivity of water, namely 0.6033 W m<sup>−1</sup> K<sup>−1</sup>. Effect of nanoparticles (NPs) on thermal conductivity of ILs is also investigated. It is shown that the thermal conductivity of BmimBF<sub>4</sub> does not change significantly in the presence of Fe<sub>2</sub>O<sub>3</sub> NPs. However, the thermal conductivity of BmimPF<sub>6</sub> decreases somewhat in the presence of R711 NPs. In addition, the thermal diffusivity of pure ILs, including BmimBF<sub>4</sub>, BmimPF<sub>6</sub>, BmimFeCl<sub>4</sub>, OmimCl, and OmimFeCl<sub>4</sub>, is measured. All the average thermal diffusivity values of the ILs of BmimBF<sub>4</sub>, BmimPF<sub>6</sub>, BmimFeCl<sub>4</sub>, OmimCl, and OmimFeCl<sub>4</sub> are no more than 0.1185 mm<sup>2</sup> s<sup>−1</sup>. The thermal diffusivity of water is 0.143 mm<sup>2</sup> s<sup>−1</sup> in the literature. It illustrates that the ILs also have a better thermal property than water for energy storage. ILs may be utilized as novel materials for energy storage. Effect of NPs on thermal diffusivity of ILs is also investigated. The results are similar to how NPs influence thermal conductivity of BmimBF<sub>4</sub> and BmimPF<sub>6</sub>. In the presence of Fe<sub>2</sub>O<sub>3</sub> NPs, thermal diffusivity of BmimBF<sub>4</sub> does not change significantly. However, in the presence of R711 NPs, thermal diffusivity of BmimPF<sub>6</sub> decreases somewhat.en_US
dc.descriptionPublished version available at <a href=https://doi.org/10.1007/s10973-016-5881-0> https://doi.org/10.1007/s10973-016-5881-0 </a>en_US
dc.identifier.citationZhao, Y., Zhen, Y., Jelle, B.P. et al.: Measurements of ionic liquids thermal conductivity and thermal diffusivity. J Therm Anal Calorim (2017) 128: 279. https://doi.org/10.1007/s10973-016-5881-0en_US
dc.identifier.cristinIDFRIDAID 1388746
dc.identifier.doi10.1007/s10973-016-5881-0
dc.identifier.issn1388-6150
dc.identifier.issn1588-2926
dc.identifier.urihttps://hdl.handle.net/10037/11416
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.journalJournal of thermal analysis and calorimetry (Print)
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Teknologi: 500::Nanoteknologi: 630en_US
dc.subjectVDP::Technology: 500::Nanotechnology: 630en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Organisk kjemi: 441en_US
dc.subjectVDP::Mathematics and natural science: 400::Chemistry: 440::Organic chemistry: 441en_US
dc.subjectVDP::Mathematics and natural science: 400::Physicsen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikken_US
dc.titleMeasurements of ionic liquids thermal conductivity and thermal diffusivityen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record