Issue 59, 2016, Issue in Progress

Synthesis of a novel tunnel Na0.5K0.1MnO2 composite as a cathode for sodium ion batteries

Abstract

A novel tunnel Na0.5K0.1MnO2 composite assembled by two different tunnel structures of Na0.44MnO2 and KMn8O16 is synthesized by a co-precipitation method. Bundles of microrods and small nanorods could be observed in the Na0.5K0.1MnO2 composite. The composite possesses high crystallinity and large stacking faults. When used as a cathode for sodium ion batteries, the composite exhibits a high specific capacity, excellent cyclability and superior rate capability. A high reversible discharge capacity of 142.3 mA h g−1 could be delivered at 0.1C, with 94.7 mA h g−1 retained after 100 cycles. Also 82.2 mA h g−1 could be maintained after 300 cycles at 1.0C. More than 70 mA h g−1 could be obtained at a high rate of 4.0C. The outstanding electrochemical performances may be attributed to the combined tunnel structures, one-dimensional rod-like morphology and massive structural stacking faults.

Graphical abstract: Synthesis of a novel tunnel Na0.5K0.1MnO2 composite as a cathode for sodium ion batteries

Article information

Article type
Paper
Submitted
14 Apr 2016
Accepted
31 May 2016
First published
01 Jun 2016

RSC Adv., 2016,6, 54404-54409

Author version available

Synthesis of a novel tunnel Na0.5K0.1MnO2 composite as a cathode for sodium ion batteries

Z. Wu, Y. Zhong, J. Li, K. Wang, X. Guo, L. Huang, B. Zhong and S. Sun, RSC Adv., 2016, 6, 54404 DOI: 10.1039/C6RA09707C

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