Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

On the use of guanidine hydrochloride soft template in the synthesis of Na2/3Ni1/3Mn2/3O2 cathodes for sodium-ion batteries

Full text
Aragon, M. J. [1] ; Ortiz, G. F. [1] ; Lavela, P. [1] ; Tirado, J. L. [1] ; Oliveira, J. D. C. [2] ; Motta, F. V. [2] ; Bomio, M. R. D. [2]
Total Authors: 7
[1] Univ Cordoba, Inst Univ Quim Fina & Nanoquim, Dept Quim Inorgan & Ingn Quim, Edificio Marie Curie, Campus Rabanales, E-14071 Cordoba - Spain
[2] Univ Fed Rio Grande do Norte, Dept Mat Engn, LSQM Lab Chem Synth Mat, POB 1524, BR-59078900 Natal, RN - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Alloys and Compounds; v. 789, p. 1035-1045, JUN 15 2019.
Web of Science Citations: 0

Several P2-Na2/3Ni1/3Mn2/3O2 layered oxides have been prepared by a modified synthesis procedure using guanidine hydrochloride as a soft template. X-ray diffraction patterns will reveal a decrease of both crystallite size and strain for guanidine hydrochloride treated samples, favoring sodium accessibility at the electrode/electrolyte interface. Also, guanidine hydrochloride promotes anisotropic particles for intermediate amounts. This specific morphology may contribute to a partial suppression of the P2-O2 phase transition. Galvanostatic tests at different rates and potential windows will evidence better capacity retention and low charge-discharge hysteresis for NaNMO-2% in close relationship with the low internal resistance values at the electrode-electrolyte interphase and apparent diffusion coefficients determined by impedance spectroscopy. A performing full sodium-ion cell will demonstrate the reliability of this material as an electrode for Na-ion cells. (C) 2019 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 08/57872-1 - National Institute for Materials Science in Nanotechnology
Grantee:Elson Longo da Silva
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC