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Página principal > Artículos > Artículos publicados > Polyimides as Promising Cathodes for Metal-Organic Batteries : |
Fecha: | 2023 |
Resumen: | Ca- and Mg-based batteries represent a more sustainable alternative to Li-ion batteries. However, multivalent cation technologies suffer from poor cation mass transport. In addition, the development of positive electrodes enabling reversible charge storage currently represents one of the major challenges. Organic positive electrodes, in addition to being the most sustainable and potentially low-cost candidates, compared with their inorganic counterparts, currently present the best electrochemical performances in Ca and Mg cells. Unfortunately, organic positive electrodes suffer from relatively low capacity retention upon cycling, the origin of which is not yet fully understood. Here, 1,4,5,8-naphthalenetetracarboxylic dianhydride-derived polyimide was tested in Li, Na, Mg, and Ca cells for the sake of comparison in terms of redox potential, gravimetric capacities, capacity retention, and rate capability. The redox mechanisms were also investigated by means of operando IR experiments, and a parameter affecting most figures of merit has been identified: the presence of contact ion-pairs in the electrolyte. |
Ayudas: | European Commission 715087 Agencia Estatal de Investigación PID2021-124974OB-C21 Agencia Estatal de Investigación IJC2020-043076-I-I Agencia Estatal de Investigación CEX2019-000917-S European Commission 101028682 |
Derechos: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Lengua: | Anglès |
Documento: | Article ; recerca ; Versió publicada |
Materia: | Battery ; Lithium ; Post Li ; Sodium ; Calcium ; Magnesium ; Organic cathode |
Publicado en: | ACS Applied Energy Materials, Vol. 6, Issue 13 (July 2023) , p. 7250-7257, ISSN 2574-0962 |
8 p, 4.5 MB |