Expression of concern: Hollow amorphous NaFePO₄ nanospheres as a high-capacity and high-rate cathode for sodium-ion batteries

Abstract

Expression of concern for ‘Hollow amorphous NaFePO₄ nanospheres as a high-capacity and high-rate cathode for sodium-ion batteries’ by Chun Li et al., J. Mater. Chem. A, 2015, 3, 8265–8271.

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The following article ‘Hollow amorphous NaFePO₄ nanospheres as a high-capacity and high-rate cathode for sodium-ion batteries’ by Chun Li^a, Xue Miao^a, Wei Chu*^b, Ping Wu^a and Dong Ge Tong*^a has been published in Journal of Materials Chemistry A. The article reports the preparation of hollow amorphous NaFePO₄ nanospheres and their application as a cathode for sodium-ion batteries.

Journal of Materials Chemistry A is publishing this expression of concern in order to alert our readers that we are presently unable to confirm the accuracy of the data reported in the TEM images in Fig. S1, S3, S6a, S9a–d and S14a–b of the ESI of this Journal of Materials Chemistry A paper.

The College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology has confirmed that the original TEM files are not available. The authors are in the process of repeating the experiments to confirm the validity of the TEM images in the published figures. This notice will be updated when a conclusive outcome is reached.

Simon R. T. Neil

22nd June 2018

Managing Editor, Journal of Materials Chemistry A

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