Polyimides as Promising Cathodes for Metal-Organic Batteries : A Comparison between Divalent (Ca 2+, Mg 2+) and Monovalent (Li +, Na +) Cations
Monti, Damien (Institut de Ciència de Materials de Barcelona)
Patil, Nagaraj (IMDEA Energy)
Black Serra, Ashley Phillip (Institut de Ciència de Materials de Barcelona)
Raptis, Dionysios (University of Crete)
Mavrandonakis, Andreas (IMDEA Energy)
Froudakis, George E. (University of Crete)
Yousef, Ibraheem (ALBA Laboratori de Llum de Sincrotró)
Goujon, Nicolas (Basque Research and Technology Alliance)
Mecerreyes, David (Universidad del País Vasco)
Marcilla, Rebeca (IMDEA Energy)
Ponrouch, Alexandre (Institut de Ciència de Materials de Barcelona)

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

DOI: 10.1021/acsaem.3c00969
PMID: 37448980

8 p, 4.5 MB

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