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Perticarari, S., Grange, E., Doizy, T., Pellegrin, Y., Quarez, E., Oyaizu, K., Fernandez-Ropero, A. J., Guyomard, D., Poizot, P., Odobel, F. & Gaubicher, J. (2019) Full Organic Aqueous Battery Based on TEMPO Small Molecule with Millimeter-Thick Electrodes. Chemistry of Materials, 31 1869–1880.
Added by: Richard Baschera (2019-04-23 10:06:28) Last edited by: Richard Baschera (2019-04-23 10:10:38) |
| Type de référence: Article DOI: 10.1021/acs.chemmater.8b03282 Clé BibTeX: Perticarari2019 Voir tous les détails bibliographiques  |
Catégories: IMN, INTERNATIONAL, ST2E Créateurs: Doizy, Fernandez-Ropero, Gaubicher, Grange, Guyomard, Odobel, Oyaizu, Pellegrin, Perticarari, Poizot, Quarez Collection: Chemistry of Materials |
Consultations : 8/434
Indice de consultation : 4% Indice de popularité : 1% |
| Résumé |
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Thick electrodes with sodium and even anion intercalation organic compounds integrated in a neutral-pH aqueous battery offer unique advantages in terms of round trip efficiency, environmental impact, and scalability for off- or on-grid renewable energy storage. Herein, we report the first anion-rocking chair/dual-ion organic battery. The latter reaches 35 Wh/kg(materials) at a C/8 rate. It shows remarkable cyclability and coulombic efficiency in a cheap and neutral NaClO4 electrolyte pouch cell with highly loaded millimeter-thick electrodes (5 mAh/cm(2)). This achievement is based on a thorough study of a commercial 2,2,6,6-tetramethylpiperidin-yl-N-oxyl (TEMPO) (TEMPO) benzene derivative, namely, 4-hydroxy TEMPO benzoate, and its naphthalene analog (4-carboxy TEMPO naphthalate) as positive electrode materials and a bipyridinium-naphthalene oligomer as the negative electrode. Combined UV-vis spectroelectrochemistry and operando X-ray diffraction account for the much improved cyclability of the hydrophobic 4-carboxy TEMPO naphthalate at the expense of a lower specific capacity. This trend is reversed in the case of the 4-hydroxy TEMPO benzoate derivative. Results show that the kinetic limitations of 4-hydroxy TEMPO benzoate are associated with the surrounding composite electrode, whereas inner-grain ionic and/or electronic transports play a decisive role for 4-carboxy TEMPO naphthalate.
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