The implementation of aqueous electrode processing of cathode materials is a key for the development of greener Na-ion batteries. Herein, the development and optimization of the aqueous electrode processing for the ecofriendly Na0.44MnO2 (NMO) cathode material, employing carboxymethyl cellulose (CMC) as binder, are reported for the first time. The characterization of such an electrode reveals that the performances are strongly affected by the employed electrolyte solution, especially, the sodium salt and the use of electrolyte's additives. In particular, the best results are obtained using the 1 M solution of NaPF6 in EC/DEC (ethylene carbonate/diethyl carbonate) 3:7 (v/v) + 2 wt % FEC (fluoroethylene carbonate). With this electrolyte, the outstanding capacity of 99.7 mA h g-1 is delivered by the CMC-NMO cathode after 800 cycles at a 1C charge/discharge rate. On the basis of this excellent long-Term performance, a full sodium cell, composed of a CMC-based NMO cathode and hard carbon from biowaste (corn cob), has been assembled and tested. The cell delivers excellent performances in terms of specific capacity, capacity retention, and long-Term cycling stability. After 75 cycles at a C/5 rate, the capacity of the NMO in the full-cell approaches 109 mA h g-1 with a Coulombic efficiency of 99.9%.

Dall'Asta, V., Buchholz, D., Chagas, L., Dou, X., Ferrara, C., Quartarone, E., et al. (2017). Aqueous Processing of Na0.44MnO2 Cathode Material for the Development of Greener Na-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES, 9(40), 34891-34899 [10.1021/acsami.7b09464].

Aqueous Processing of Na0.44MnO2 Cathode Material for the Development of Greener Na-Ion Batteries

Ferrara C.;Passerini S.
2017

Abstract

The implementation of aqueous electrode processing of cathode materials is a key for the development of greener Na-ion batteries. Herein, the development and optimization of the aqueous electrode processing for the ecofriendly Na0.44MnO2 (NMO) cathode material, employing carboxymethyl cellulose (CMC) as binder, are reported for the first time. The characterization of such an electrode reveals that the performances are strongly affected by the employed electrolyte solution, especially, the sodium salt and the use of electrolyte's additives. In particular, the best results are obtained using the 1 M solution of NaPF6 in EC/DEC (ethylene carbonate/diethyl carbonate) 3:7 (v/v) + 2 wt % FEC (fluoroethylene carbonate). With this electrolyte, the outstanding capacity of 99.7 mA h g-1 is delivered by the CMC-NMO cathode after 800 cycles at a 1C charge/discharge rate. On the basis of this excellent long-Term performance, a full sodium cell, composed of a CMC-based NMO cathode and hard carbon from biowaste (corn cob), has been assembled and tested. The cell delivers excellent performances in terms of specific capacity, capacity retention, and long-Term cycling stability. After 75 cycles at a C/5 rate, the capacity of the NMO in the full-cell approaches 109 mA h g-1 with a Coulombic efficiency of 99.9%.
Articolo in rivista - Articolo scientifico
binder; carboxymethyl cellulose; cathode; electrode; green; sodium-ion battery;
binder; carboxymethyl cellulose; cathode; electrode; green; sodium-ion battery
English
2017
9
40
34891
34899
none
Dall'Asta, V., Buchholz, D., Chagas, L., Dou, X., Ferrara, C., Quartarone, E., et al. (2017). Aqueous Processing of Na0.44MnO2 Cathode Material for the Development of Greener Na-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES, 9(40), 34891-34899 [10.1021/acsami.7b09464].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/250334
Citazioni
  • Scopus 55
  • ???jsp.display-item.citation.isi??? 53
Social impact