Facile Synthesis of Nanostructured MnO2 as Anode Materials for Sodium‐Ion Batteries. Issue 3 (13th January 2016)

• Record Type: Journal Article
• Authors: Zhang, Zhian; Zhao, Xingxing; Li, Jie
• Is Part Of: ChemNanoMat. Volume 2:Issue 3(2016)
• Page Start: 196
• Page End: 200
• Publication Date: 2016-01-13
• Subjects: anode materials -- manganese dioxide -- nanostructures -- sodium ion batteries; Nanochemistry -- Periodicals; Nanostructured materials -- Periodicals; Nanochemistry; Nanostructured materials; Periodicals; 541.2
• DOI: 10.1002/cnma.201500194
• Languages: English
• ISSNs: 2199-692X

Abstract

Abstract: Nanostructured MnO2 (including nanorods and nanoflowers) has been synthesized by a simple two‐step hydrothermal method and thermal treatment. When employed as anode materials for sodium‐ion batteries, MnO2 nanorods and nanoflowers demonstrate high initial sodium ion storage capacities of 427.4 and 487.8 mA h g −1, respectively, at a current density of 50 mA g −1 . Compared with MnO2 nanorods, MnO2 nanoflowers achieved a much better electrochemical performance including good rate capability (103.3 mA h g −1 at 800 mA g −1 after 100 cycles) and superior cyclability (133.6 mA h g −1 at 400 mA g −1 after 1000 cycles). The good performance can be ascribed to the nanocrystalline nature and the three‐dimensional hierarchical architecture of MnO2 nanoflowers, which promotes the contact between MnO2 and electrolyte and shortens the electronic sodium ion pathway in the charge and discharge processes. Abstract : MnO2 nanorods and nanoflowers have been synthesized via a simple two‐step hydrothermal method and thermal treatment. Applied as anode materials for sodium ion batteries, MnO2 nanorods and nanoflowers achieve good electrochemical performance such as good rate capability and superior cyclability.