Rational construction of Na0.44MnO2 nanorods and PAN nanofibers composite as high areal capacity sodium-ion batteries

Abstract

The electrode materials are traditionally loaded on the surface of the metal current collector by using of roll coating methods in sodium-ion batteries (SIBs). However, with the increase of the mass loading, the sodium storage performance of the cathodes deteriorates dramatically in the traditional casting process. In this work, we propose a novel strategy by applying electrospinning and airbrush-spraying technique to fabricate Na0.44MnO2-based paper (NMO-BP) electrodes. The results indicate that the NMO-BP electrodes show good electrochemical performance in terms of high areal capacities and good cycling stability with the loaded Na0.44MnO2 active material increasing from 2.6 to 10.4 mg cm−2. A high areal capacities of 1.10 mAh cm−2 is obtained in the NMO-BP electrodes with high areal loading (> 10 mg cm−2) for SIBs. This research provides a new method to explore cathode materials for sodium-ion battery with higher areal capacities.