Manganese oxide electrode with excellent electrochemical performance for sodium ion batteries by pre-intercalation of K and Na ions.

Abstract:

:Materials with a layered structure have attracted tremendous attention because of their unique properties. The ultrathin nanosheet structure can result in extremely rapid intercalation/de-intercalation of Na ions in the charge-discharge progress. Herein, we report a manganese oxide with pre-intercalated K and Na ions and having flower-like ultrathin layered structure, which was synthesized by a facile but efficient hydrothermal method under mild condition. The pre-intercalation of Na and K ions facilitates the access of electrolyte ions and shortens the ion diffusion pathways. The layered manganese oxide shows ultrahigh specific capacity when it is used as cathode material for sodium-ion batteries. It also exhibits excellent stability and reversibility. It was found that the amount of intercalated Na ions is approximately 71% of the total charge. The prominent electrochemical performance of the manganese oxide demonstrates the importance of design and synthesis of pre-intercalated ultrathin layered materials.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Feng M,Du Q,Su L,Zhang G,Wang G,Ma Z,Gao W,Qin X,Shao G

doi

10.1038/s41598-017-02028-0

subject

Has Abstract

pub_date

2017-05-22 00:00:00

pages

2219

issue

1

issn

2045-2322

pii

10.1038/s41598-017-02028-0

journal_volume

7

pub_type

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