High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers
The ability to recharge and to deliver high capacity quickly is required for the next generation of lithium ion storage technologies, especially for pure electric vehicles. A new type of hybrid positive electrode for lithium ion capacitors is investigated that comprises discrete layers of high power...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2020
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| _version_ | 1826260215717167104 |
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| author | Lee, SH Huang, C Grant, PS |
| author_facet | Lee, SH Huang, C Grant, PS |
| author_sort | Lee, SH |
| collection | OXFORD |
| description | The ability to recharge and to deliver high capacity quickly is required for the next generation of lithium ion storage technologies, especially for pure electric vehicles. A new type of hybrid positive electrode for lithium ion capacitors is investigated that comprises discrete layers of high power capacitive activated carbon and high capacity insertion-type LiFePO4, with the aim of boosting energy density towards that of a lithium ion battery while preserving capacitor-like power capability over thousands of charge/discharge cycles. The electrochemical performance of these hybrid electrodes was investigated both as a function of the LiFePO4 weight fraction (its thickness in the multi-layered electrode arrangement) and its location within the multi-layer. The best performing hybrid positive electrode architecture delivered an attractive balance of an energy density of ~ 90 Wh/kg and a power density of ~ 15 kW/kg in a full lithium ion capacitor configuration, which outperformed other combinations of the same materials. The ability to produce a double-sided configuration of the hybrid layered electrode over 20 × 20 cm2 was demonstrated, confirming the potential scalability of layer-by-layer manufacture. |
| first_indexed | 2024-03-06T19:02:08Z |
| format | Journal article |
| id | oxford-uuid:13e49528-ede9-4adc-8129-0eafda046376 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:02:08Z |
| publishDate | 2020 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:13e49528-ede9-4adc-8129-0eafda0463762022-03-26T10:16:27ZHigh energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layersJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:13e49528-ede9-4adc-8129-0eafda046376EnglishSymplectic ElementsElsevier2020Lee, SHHuang, CGrant, PSThe ability to recharge and to deliver high capacity quickly is required for the next generation of lithium ion storage technologies, especially for pure electric vehicles. A new type of hybrid positive electrode for lithium ion capacitors is investigated that comprises discrete layers of high power capacitive activated carbon and high capacity insertion-type LiFePO4, with the aim of boosting energy density towards that of a lithium ion battery while preserving capacitor-like power capability over thousands of charge/discharge cycles. The electrochemical performance of these hybrid electrodes was investigated both as a function of the LiFePO4 weight fraction (its thickness in the multi-layered electrode arrangement) and its location within the multi-layer. The best performing hybrid positive electrode architecture delivered an attractive balance of an energy density of ~ 90 Wh/kg and a power density of ~ 15 kW/kg in a full lithium ion capacitor configuration, which outperformed other combinations of the same materials. The ability to produce a double-sided configuration of the hybrid layered electrode over 20 × 20 cm2 was demonstrated, confirming the potential scalability of layer-by-layer manufacture. |
| spellingShingle | Lee, SH Huang, C Grant, PS High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers |
| title | High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers |
| title_full | High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers |
| title_fullStr | High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers |
| title_full_unstemmed | High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers |
| title_short | High energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi-layers |
| title_sort | high energy lithium ion capacitors using hybrid cathodes comprising electrical double layer and intercalation host multi layers |
| work_keys_str_mv | AT leesh highenergylithiumioncapacitorsusinghybridcathodescomprisingelectricaldoublelayerandintercalationhostmultilayers AT huangc highenergylithiumioncapacitorsusinghybridcathodescomprisingelectricaldoublelayerandintercalationhostmultilayers AT grantps highenergylithiumioncapacitorsusinghybridcathodescomprisingelectricaldoublelayerandintercalationhostmultilayers |