A new insight into the oxygen diffusion in porous cathodes of lithium-air batteries
Slow air transport in the cathodes limits the performance of the metal-air battery. In this work, the diffusion mechanisms in the lithium-air battery have been investigated. It has been found that Knudsen diffusivity can be influenced dramatically by the different pore sizes while bulk diffusivity i...
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| Veröffentlicht in: | Energy (Oxford) 2015-04, Vol.83, p.669-673 |
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| creator | Ye, Luhan Lv, Weiqiang Zhang, Kelvin H.L. Wang, Xiaoning Yan, Pengfei Dickerson, James H. He, Weidong |
| description | Slow air transport in the cathodes limits the performance of the metal-air battery. In this work, the diffusion mechanisms in the lithium-air battery have been investigated. It has been found that Knudsen diffusivity can be influenced dramatically by the different pore sizes while bulk diffusivity is almost a constant at a fixed temperature. Limiting current density and concentration polarization, both limited by impeded gas diffusion in the porous cathode, have been evaluated systematically. The analysis of the correlation between those electrochemical parameters and diffusivities improves the quantitative evaluation of gas-based batteries at various materials and operation conditions.
•Gas diffusion models are applied to evaluate the lithium-air battery cathode.•Knudsen and bulk diffusivities are introduced to analyze cathode materials.•Analysis is performed for assessing the battery efficiency. |
| doi_str_mv | 10.1016/j.energy.2015.02.072 |
| format | Article |
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•Gas diffusion models are applied to evaluate the lithium-air battery cathode.•Knudsen and bulk diffusivities are introduced to analyze cathode materials.•Analysis is performed for assessing the battery efficiency.</description><subject>Air transport</subject><subject>Cathodes</subject><subject>Concentration polarization</subject><subject>Constants</subject><subject>Constraining</subject><subject>Diffusion</subject><subject>Diffusivity</subject><subject>Limiting current density</subject><subject>Lithium batteries</subject><subject>Lithium-air battery</subject><subject>Metal air batteries</subject><subject>Porous cathode</subject><issn>0360-5442</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kE1OwzAQhb0AiVK4AQsv2SSMnV9vkKqKP6kSm7K2EmfSuErjYjtAbsNZOBmuwprVSDPvPb35CLlhEDNg-d0-xgHtboo5sCwGHkPBz8gCkhyiLE35Bbl0bg8AWSnEgmxXdMBPqgend50P0xvqO6Tma9rhQBvdtqPTZggXejTWjI6qynemQUdN-_Pda9_p8RBV2tK68h6tRndFztuqd3j9N5fk7fFhu36ONq9PL-vVJlIJlD5CUbAGFRcpcJ7nJVNVKnIMy7ZRJc-LULquc5EIzrK0FlmdgUKWKFYnwApMluR2zj1a8z6i8_KgncK-rwYMTSUrWCl4CEiCNJ2lyhrnLLbyaPWhspNkIE_g5F7O4OQJnAQuA7hgu59tGN740GilUxoHhY22qLxsjP4_4BduvHuu</recordid><startdate>20150401</startdate><enddate>20150401</enddate><creator>Ye, Luhan</creator><creator>Lv, Weiqiang</creator><creator>Zhang, Kelvin H.L.</creator><creator>Wang, Xiaoning</creator><creator>Yan, Pengfei</creator><creator>Dickerson, James H.</creator><creator>He, Weidong</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20150401</creationdate><title>A new insight into the oxygen diffusion in porous cathodes of lithium-air batteries</title><author>Ye, Luhan ; Lv, Weiqiang ; Zhang, Kelvin H.L. ; Wang, Xiaoning ; Yan, Pengfei ; Dickerson, James H. ; He, Weidong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c308t-e971dec2940226681ca496e71dfdc8267036bb69392154b95b50ce13c1b3017e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Air transport</topic><topic>Cathodes</topic><topic>Concentration polarization</topic><topic>Constants</topic><topic>Constraining</topic><topic>Diffusion</topic><topic>Diffusivity</topic><topic>Limiting current density</topic><topic>Lithium batteries</topic><topic>Lithium-air battery</topic><topic>Metal air batteries</topic><topic>Porous cathode</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ye, Luhan</creatorcontrib><creatorcontrib>Lv, Weiqiang</creatorcontrib><creatorcontrib>Zhang, Kelvin H.L.</creatorcontrib><creatorcontrib>Wang, Xiaoning</creatorcontrib><creatorcontrib>Yan, Pengfei</creatorcontrib><creatorcontrib>Dickerson, James H.</creatorcontrib><creatorcontrib>He, Weidong</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Energy (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ye, Luhan</au><au>Lv, Weiqiang</au><au>Zhang, Kelvin H.L.</au><au>Wang, Xiaoning</au><au>Yan, Pengfei</au><au>Dickerson, James H.</au><au>He, Weidong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A new insight into the oxygen diffusion in porous cathodes of lithium-air batteries</atitle><jtitle>Energy (Oxford)</jtitle><date>2015-04-01</date><risdate>2015</risdate><volume>83</volume><spage>669</spage><epage>673</epage><pages>669-673</pages><issn>0360-5442</issn><abstract>Slow air transport in the cathodes limits the performance of the metal-air battery. In this work, the diffusion mechanisms in the lithium-air battery have been investigated. It has been found that Knudsen diffusivity can be influenced dramatically by the different pore sizes while bulk diffusivity is almost a constant at a fixed temperature. Limiting current density and concentration polarization, both limited by impeded gas diffusion in the porous cathode, have been evaluated systematically. The analysis of the correlation between those electrochemical parameters and diffusivities improves the quantitative evaluation of gas-based batteries at various materials and operation conditions.
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| ispartof | Energy (Oxford), 2015-04, Vol.83, p.669-673 |
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| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Air transport Cathodes Concentration polarization Constants Constraining Diffusion Diffusivity Limiting current density Lithium batteries Lithium-air battery Metal air batteries Porous cathode |
| title | A new insight into the oxygen diffusion in porous cathodes of lithium-air batteries |
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