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Improving the structural and cyclic stabilities of P2-type Na0.67MnO2 cathode material via Cu and Ti co-substitution for sodium ion batteries

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Abstract

An air-stable Na0.67Mn0.7Cu0.15Ti0.15O2 (NMCT) has been synthesized using a solid-state method. It displays a reversible capacity of 170 mA h gāˆ’1 and a capacity retention of 82.5% after 300 cycles. NMCT also exhibits good structural stability upon electrochemical de/intercalation processes as observed by operando XRD. And the result shows that the unit-cell volume change of NMCT during the whole process of Na+ de/intercalation is only 3.2%. These data indicate that NMCT is a promising cathode material for sodium ion batteries (SIBs).

Graphical abstract: Improving the structural and cyclic stabilities of P2-type Na0.67MnO2 cathode material via Cu and Ti co-substitution for sodium ion batteries

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Article information


Submitted
24 Feb 2020
Accepted
21 Apr 2020
First published
28 Apr 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Improving the structural and cyclic stabilities of P2-type Na0.67MnO2 cathode material via Cu and Ti co-substitution for sodium ion batteries

X. Zhang, F. Qiu, K. Jiang, P. He, M. Han, S. Guo and H. Zhou, Chem. Commun., 2020, Advance Article , DOI: 10.1039/D0CC01442G

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