Abstract
The development of functioning rechargeable Mg-ion batteries is still in its early stage, and a coarse screening of suitable cathode materials is still on-going. Within the intercalation-type cathodes, layered crystalline materials are of high interest as they are known to perform well in Li-ion intercalation batteries and are also increasingly being explored for Na-ion batteries. Here, we present an investigation of the layered material orthorhombic V2O5, which is a classical candidate for an ion-intercalation material having a high theoretical capacity1. We present discharge-curves for the insertion of magnesium, and investigate the degradation as a function of cycle number. Furthermore, in an attempt to separate degradation associated with the cathode and the anode, effects of exchanging anode and electrolyte were investigated. Hereby, up to 50% of the cathode capacity was regained on the subsequent discharge. This indicates that the degradation is highly associated with formation of ion-blocking layers on the anode.
| Translated title of the contribution | Interkalation af Mg-ioner i lagdelt V2O5-katodematerialer til genopladelige Mg-ionbatterier |
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| Original language | English |
| Publication date | 21. Sep 2016 |
| Number of pages | 1 |
| Publication status | Published - 21. Sep 2016 |
| Event | 1st International Symposium on Magnesium Batteries - Helmholtz Institute Ulm - Tagungszentrum Blaubeuren, Hessenhöfe 33, 89143 Blaubeuren, Germany Duration: 21. Jul 2016 → 22. Jul 2016 Conference number: 1 http://www.mg-batt.de/ |
Conference
| Conference | 1st International Symposium on Magnesium Batteries |
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| Number | 1 |
| Location | Helmholtz Institute Ulm - Tagungszentrum Blaubeuren, Hessenhöfe 33 |
| Country/Territory | Germany |
| City | 89143 Blaubeuren |
| Period | 21/07/2016 → 22/07/2016 |
| Internet address |