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Article dans une revue

Pyrolyzed bacterial cellulose-supported SnO2 nanocomposites as high-capacity anode materials for sodium-ion batteries

Abstract : Room-temperature sodium-based batteries have the potential for meeting large-scale grid energy storage needs. Inspired by the advancement of the design and building of electrode materials in lithium ion batteries, improved nano-architectured electrodes can be created for sodium-ion batteries, allowing increased electron transport kinetics and conductivities. Here, nanocomposites with 3D porous structures are reported as a high-capacity anode material for sodium-ion batteries by using an easy, low-cost and environmentally friendly synthesis of pyrolyzed bacterial celluloses (PBCs). Bacterial celluloses (BCs) produced by the Gluconacetobacter xylinus strain are pyrolyzed at 500, 750 and 1000 A degrees C, resulting 50, 130 and 110 mAh g(-1) capacities over 80 numbers of cycles, respectively, in the presence of the binary ethylene carbonate-propylene carbonate mixture. In order to increase the cell performances, in situ coated SnO2 nanoparticles with bacterial cellulose (SnO2@PBC) are produced by addition as synthesized 5-nm-sized SnO2 nanoparticles into the BC growth medium together with the G. xylinus strain. Following the pyrolysis at 500 A degrees C, the SnO2@PBC composite is better able to handle the accommodation of the dramatic volume change of the incorporated SnO2 nanoparticles because of the interaction of oxygen-containing moieties of bacterial cellulose nanofibrils with the SnO2 nanoparticles during cellulose production. The resulting SnO2@PBC composite presents highly stable capacity retention of around 400 mAh g(-1) capacities at C/10 current density over 50 numbers of cycles.
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https://hal-u-picardie.archives-ouvertes.fr/hal-03611430
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Soumis le : jeudi 17 mars 2022 - 10:32:50
Dernière modification le : mercredi 27 avril 2022 - 04:35:24

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Burcu Dursun, Taner Sar, Ali Ata, Mathieu Morcrette, Meltem Yesilcimen Akbas, et al.. Pyrolyzed bacterial cellulose-supported SnO2 nanocomposites as high-capacity anode materials for sodium-ion batteries. Cellulose, 2016, 23 (4), pp.2597-2607. ⟨10.1007/s10570-016-0966-2⟩. ⟨hal-03611430⟩

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