Multiangular rod-shaped Na0.44MnO2 as cathode materials with high rate and long life for sodium-ion batteries

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Liu, Qiannan
Hu, Zhe
Chen, Mingzhe
Gu, Qinfen
Dou, Yuhai
Sun, Ziqi
Chou, Shulei
Dou, Shi Xue
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2017
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Abstract

The tunnel-structured Na0.44MnO2 is considered as a promising cathode material for sodium-ion batteries because of its unique three-dimensional crystal structure. Multiangular rod-shaped Na0.44MnO2 have been first synthesized via a reverse microemulsion method and investigated as high-rate and long-life cathode materials for Na-ion batteries. The microstructure and composition of prepared Na0.44MnO2 is highly related to the sintering temperature. This structure with suitable size increases the contact area between the material and the electrolyte and guarantees fast sodium-ion diffusion. The rods prepared at 850 °C maintain specific capacity of 72.8 mA h g–1 and capacity retention of 99.6% after 2000 cycles at a high current density of 1000 mA g–1. The as-designed multiangular Na0.44MnO2 provides new insight into the development of tunnel-type electrode materials and their application in rechargeable sodium-ion batteries.

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ACS Applied Materials & Interfaces
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This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, © 2016 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsami.6b13830
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Chemical sciences
Engineering
Science & Technology
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Science & Technology - Other Topics
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Liu, Q; Hu, Z; Chen, M; Gu, Q; Dou, Y; Sung, Z; Chou, S; Dou, SX, Multiangular rod-shaped Na0.44MnO2 as cathode materials with high rate and long life for sodium-ion batteries, ACS Applied Materials & Interfaces, 2017, 9 (4), pp. 3644-3652