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Title: Layered P2-Na 2/3 Co 1/2 Ti 1/2 O 2 as a high-performance cathode material for sodium-ion batteries

Abstract

Layered oxides are regarded as promising cathode materials for sodium-ion batteries. We present Na2/3Co1/2Ti1/2O2 as a potential new cathode material for sodium-ion batteries. The crystal features and morphology of the pristine powder were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The cathode material is evaluated in galvanostatic charge-discharge and galvanostatic intermittent titration tests, as well as ex-situ X-ray diffraction analysis. Synthesized by a high-temperature solid state reaction, Na2/3Co1/2Ti1/2O2 crystallizes in P2-type structure with P6(3)/mmc space group. The material presents reversible electrochemical behavior and delivers a specific discharge capacity of 100 mAh g(-1) when tested in Na half cells between 2.0 and 4.2 V (vs. Na+/Na), with capacity retention of 98% after 50 cycles. Furthermore, the electrochemical cycling of this titanium-containing material evidenced a reduction of the potential jumps recorded in the NaxCoO2 parent phase, revealing a positive impact of Ti substitution for Co. The ex-situ XRD measurements confirmed the reversibility and stability of the material. No structural changes were observed in the XRD patterns, and the P2-type structure was stable during the charge/discharge process between 2.0 and 4.2 V vs. Na+/Na. These outcomes will contribute to the progress of developing low cost electrode materials for sodium-ion batteries.more » (C) 2017 Elsevier B.V. All rights reserved.« less

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Office Cherifien des Phosphates Group (OCP); USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology - Battery Materials Research (BMR) Program
OSTI Identifier:
1406910
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Power Sources; Journal Volume: 342
Country of Publication:
United States
Language:
English

Citation Formats

Sabi, Noha, Doubaji, Siham, Hashimoto, Kazuki, Komaba, Shinichi, Amine, Khalil, Solhy, Abderrahim, Manoun, Bouchaib, Bilal, Essaid, and Saadoune, Ismael. Layered P2-Na 2/3 Co 1/2 Ti 1/2 O 2 as a high-performance cathode material for sodium-ion batteries. United States: N. p., 2017. Web. doi:10.1016/j.jpowsour.2017.01.025.
Sabi, Noha, Doubaji, Siham, Hashimoto, Kazuki, Komaba, Shinichi, Amine, Khalil, Solhy, Abderrahim, Manoun, Bouchaib, Bilal, Essaid, & Saadoune, Ismael. Layered P2-Na 2/3 Co 1/2 Ti 1/2 O 2 as a high-performance cathode material for sodium-ion batteries. United States. doi:10.1016/j.jpowsour.2017.01.025.
Sabi, Noha, Doubaji, Siham, Hashimoto, Kazuki, Komaba, Shinichi, Amine, Khalil, Solhy, Abderrahim, Manoun, Bouchaib, Bilal, Essaid, and Saadoune, Ismael. Wed . "Layered P2-Na 2/3 Co 1/2 Ti 1/2 O 2 as a high-performance cathode material for sodium-ion batteries". United States. doi:10.1016/j.jpowsour.2017.01.025.
@article{osti_1406910,
title = {Layered P2-Na 2/3 Co 1/2 Ti 1/2 O 2 as a high-performance cathode material for sodium-ion batteries},
author = {Sabi, Noha and Doubaji, Siham and Hashimoto, Kazuki and Komaba, Shinichi and Amine, Khalil and Solhy, Abderrahim and Manoun, Bouchaib and Bilal, Essaid and Saadoune, Ismael},
abstractNote = {Layered oxides are regarded as promising cathode materials for sodium-ion batteries. We present Na2/3Co1/2Ti1/2O2 as a potential new cathode material for sodium-ion batteries. The crystal features and morphology of the pristine powder were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The cathode material is evaluated in galvanostatic charge-discharge and galvanostatic intermittent titration tests, as well as ex-situ X-ray diffraction analysis. Synthesized by a high-temperature solid state reaction, Na2/3Co1/2Ti1/2O2 crystallizes in P2-type structure with P6(3)/mmc space group. The material presents reversible electrochemical behavior and delivers a specific discharge capacity of 100 mAh g(-1) when tested in Na half cells between 2.0 and 4.2 V (vs. Na+/Na), with capacity retention of 98% after 50 cycles. Furthermore, the electrochemical cycling of this titanium-containing material evidenced a reduction of the potential jumps recorded in the NaxCoO2 parent phase, revealing a positive impact of Ti substitution for Co. The ex-situ XRD measurements confirmed the reversibility and stability of the material. No structural changes were observed in the XRD patterns, and the P2-type structure was stable during the charge/discharge process between 2.0 and 4.2 V vs. Na+/Na. These outcomes will contribute to the progress of developing low cost electrode materials for sodium-ion batteries. (C) 2017 Elsevier B.V. All rights reserved.},
doi = {10.1016/j.jpowsour.2017.01.025},
journal = {Journal of Power Sources},
number = ,
volume = 342,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}