Determination of transport parameters in [EMIm]Cl–based Ionic Liquids – Diffusion and electrical conductivity
The density, electrical conductivity and diffusion coefficients of anions and cations in the ionic liquid AlCl3/1-ethyl-3-methylimidazolium chloride, [EMIm]Cl, were determined to study physical correlations of these important parameters. The density was measured for different molar ratios of AlCl3:[...
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| Veröffentlicht in: | Electrochimica acta 2021-01, Vol.366, p.137370, Article 137370 |
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| container_title | Electrochimica acta |
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| creator | Böttcher, Rene Ispas, Adriana Bund, Andreas |
| description | The density, electrical conductivity and diffusion coefficients of anions and cations in the ionic liquid AlCl3/1-ethyl-3-methylimidazolium chloride, [EMIm]Cl, were determined to study physical correlations of these important parameters. The density was measured for different molar ratios of AlCl3:[EMIm]Cl from 0.5:1 to 2.0:1 at ambient temperature. The diffusion coefficient of the electrochemically active heptachloroaluminate complex, Al2Cl7−, was measured for a molar ratio of 2:1 in the range of 25°C to 100°C. The corresponding current density and potential transients were discussed regarding the decomposition of the [EMIm]+ cation and deviation from the theoretical Cottrell behavior. The electrical conductivity was measured for molar ratios of 1.5:1 and 2:1 in the range of 25°C to 100°C. Both the diffusion coefficient and electrical conductivity can be described well by an Arrhenius law. The diffusion coefficients of AlCl4−, Al2Cl7− and [EMIm]+ were estimated from the Nernst–Einstein and Stokes–Einstein relation. The results indicate a strong impact of ion pairing in these electrolytes. |
| doi_str_mv | 10.1016/j.electacta.2020.137370 |
| format | Article |
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The density was measured for different molar ratios of AlCl3:[EMIm]Cl from 0.5:1 to 2.0:1 at ambient temperature. The diffusion coefficient of the electrochemically active heptachloroaluminate complex, Al2Cl7−, was measured for a molar ratio of 2:1 in the range of 25°C to 100°C. The corresponding current density and potential transients were discussed regarding the decomposition of the [EMIm]+ cation and deviation from the theoretical Cottrell behavior. The electrical conductivity was measured for molar ratios of 1.5:1 and 2:1 in the range of 25°C to 100°C. Both the diffusion coefficient and electrical conductivity can be described well by an Arrhenius law. The diffusion coefficients of AlCl4−, Al2Cl7− and [EMIm]+ were estimated from the Nernst–Einstein and Stokes–Einstein relation. The results indicate a strong impact of ion pairing in these electrolytes.</description><identifier>ISSN: 0013-4686</identifier><identifier>EISSN: 1873-3859</identifier><identifier>DOI: 10.1016/j.electacta.2020.137370</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Aluminum chloride ; Aluminum electrodeposition ; Ambient temperature ; Cations ; Correlation analysis ; Diffusion ; Diffusion coefficient ; Electrical conductivity ; Electrical resistivity ; Electrolytes ; Imidazolium ; Ionic liquids ; Ions ; Parameters</subject><ispartof>Electrochimica acta, 2021-01, Vol.366, p.137370, Article 137370</ispartof><rights>2020</rights><rights>Copyright Elsevier BV Jan 10, 2021</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c343t-8c6129e9b9cce0e6cd512724018f6815eab9ff0367ef58b30e9bfdb6d7f55c8b3</citedby><cites>FETCH-LOGICAL-c343t-8c6129e9b9cce0e6cd512724018f6815eab9ff0367ef58b30e9bfdb6d7f55c8b3</cites><orcidid>0000-0001-9016-4129 ; 0000-0001-9837-2408</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0013468620317631$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Böttcher, Rene</creatorcontrib><creatorcontrib>Ispas, Adriana</creatorcontrib><creatorcontrib>Bund, Andreas</creatorcontrib><title>Determination of transport parameters in [EMIm]Cl–based Ionic Liquids – Diffusion and electrical conductivity</title><title>Electrochimica acta</title><description>The density, electrical conductivity and diffusion coefficients of anions and cations in the ionic liquid AlCl3/1-ethyl-3-methylimidazolium chloride, [EMIm]Cl, were determined to study physical correlations of these important parameters. The density was measured for different molar ratios of AlCl3:[EMIm]Cl from 0.5:1 to 2.0:1 at ambient temperature. The diffusion coefficient of the electrochemically active heptachloroaluminate complex, Al2Cl7−, was measured for a molar ratio of 2:1 in the range of 25°C to 100°C. The corresponding current density and potential transients were discussed regarding the decomposition of the [EMIm]+ cation and deviation from the theoretical Cottrell behavior. The electrical conductivity was measured for molar ratios of 1.5:1 and 2:1 in the range of 25°C to 100°C. Both the diffusion coefficient and electrical conductivity can be described well by an Arrhenius law. The diffusion coefficients of AlCl4−, Al2Cl7− and [EMIm]+ were estimated from the Nernst–Einstein and Stokes–Einstein relation. The results indicate a strong impact of ion pairing in these electrolytes.</description><subject>Aluminum chloride</subject><subject>Aluminum electrodeposition</subject><subject>Ambient temperature</subject><subject>Cations</subject><subject>Correlation analysis</subject><subject>Diffusion</subject><subject>Diffusion coefficient</subject><subject>Electrical conductivity</subject><subject>Electrical resistivity</subject><subject>Electrolytes</subject><subject>Imidazolium</subject><subject>Ionic liquids</subject><subject>Ions</subject><subject>Parameters</subject><issn>0013-4686</issn><issn>1873-3859</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFUE1LAzEQDaJgrf4GA563JptusnuU-lWoeNGTSMgmE0hpkzbJCt78D_5Df4mpFa_CwMCb997MPITOKZlQQvnlcgIr0FmVmtSkLigTTJADNKKtYBVrm-4QjQihrJrylh-jk5SWhBDBBRmh7TVkiGvnVXbB42BxjsqnTYgZb1RU6904Yefxy83DfP06W319fPYqgcHz4J3GC7cdnEm4wPjaWTuknY_yBv-cFZ1WK6yDN4PO7s3l91N0ZNUqwdlvH6Pn25un2X21eLybz64WlWZTlqtWc1p30PWd1kCAa9PQWtRTQlvLW9qA6jtrCeMCbNP2jBSqNT03wjaNLsAYXex9NzFsB0hZLsMQfVkp66lo60Z0HS0ssWfpGFKKYOUmurWK75ISuctXLuVfvnKXr9znW5RXeyWUJ94cRJm0A6_BuFj40gT3r8c3bd2L1g</recordid><startdate>20210110</startdate><enddate>20210110</enddate><creator>Böttcher, Rene</creator><creator>Ispas, Adriana</creator><creator>Bund, Andreas</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-9016-4129</orcidid><orcidid>https://orcid.org/0000-0001-9837-2408</orcidid></search><sort><creationdate>20210110</creationdate><title>Determination of transport parameters in [EMIm]Cl–based Ionic Liquids – Diffusion and electrical conductivity</title><author>Böttcher, Rene ; Ispas, Adriana ; Bund, Andreas</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-8c6129e9b9cce0e6cd512724018f6815eab9ff0367ef58b30e9bfdb6d7f55c8b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Aluminum chloride</topic><topic>Aluminum electrodeposition</topic><topic>Ambient temperature</topic><topic>Cations</topic><topic>Correlation analysis</topic><topic>Diffusion</topic><topic>Diffusion coefficient</topic><topic>Electrical conductivity</topic><topic>Electrical resistivity</topic><topic>Electrolytes</topic><topic>Imidazolium</topic><topic>Ionic liquids</topic><topic>Ions</topic><topic>Parameters</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Böttcher, Rene</creatorcontrib><creatorcontrib>Ispas, Adriana</creatorcontrib><creatorcontrib>Bund, Andreas</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Electrochimica acta</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Böttcher, Rene</au><au>Ispas, Adriana</au><au>Bund, Andreas</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determination of transport parameters in [EMIm]Cl–based Ionic Liquids – Diffusion and electrical conductivity</atitle><jtitle>Electrochimica acta</jtitle><date>2021-01-10</date><risdate>2021</risdate><volume>366</volume><spage>137370</spage><pages>137370-</pages><artnum>137370</artnum><issn>0013-4686</issn><eissn>1873-3859</eissn><abstract>The density, electrical conductivity and diffusion coefficients of anions and cations in the ionic liquid AlCl3/1-ethyl-3-methylimidazolium chloride, [EMIm]Cl, were determined to study physical correlations of these important parameters. The density was measured for different molar ratios of AlCl3:[EMIm]Cl from 0.5:1 to 2.0:1 at ambient temperature. The diffusion coefficient of the electrochemically active heptachloroaluminate complex, Al2Cl7−, was measured for a molar ratio of 2:1 in the range of 25°C to 100°C. The corresponding current density and potential transients were discussed regarding the decomposition of the [EMIm]+ cation and deviation from the theoretical Cottrell behavior. The electrical conductivity was measured for molar ratios of 1.5:1 and 2:1 in the range of 25°C to 100°C. Both the diffusion coefficient and electrical conductivity can be described well by an Arrhenius law. The diffusion coefficients of AlCl4−, Al2Cl7− and [EMIm]+ were estimated from the Nernst–Einstein and Stokes–Einstein relation. The results indicate a strong impact of ion pairing in these electrolytes.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.electacta.2020.137370</doi><orcidid>https://orcid.org/0000-0001-9016-4129</orcidid><orcidid>https://orcid.org/0000-0001-9837-2408</orcidid></addata></record> |
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| subjects | Aluminum chloride Aluminum electrodeposition Ambient temperature Cations Correlation analysis Diffusion Diffusion coefficient Electrical conductivity Electrical resistivity Electrolytes Imidazolium Ionic liquids Ions Parameters |
| title | Determination of transport parameters in [EMIm]Cl–based Ionic Liquids – Diffusion and electrical conductivity |
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