Abstract:
:Herein, the formation and electrochemical performance of a novel binder-free turbostratic stacked/ well-ordered stacked δ-MnO2-carbon fiber composite cathodes in deep eutectic solvent (DES) based zinc-ion battery (ZIB) is reported. Results of morphological, elemental, and structural analyses revealed directly grown and interconnected δ-MnO2 crumpled nanosheets on a carbon fiber substrate. Moreover, an improvement via a simple annealing strategy in the stacking, surface area and conductivity of the δ-MnO2 sheets was observed. Annealing induces the rearrangement of δ-MnO2 sheets resulting in the transformation from turbostratic stacking to a well-ordered stacking of [Formula: see text]-MnO2 sheets, as indicated by the selected area electron diffraction (SAED) hexagonal single crystal pattern. Besides, the formation of the well-ordered stacking of [Formula: see text]-MnO2 sheets exhibited improved electrochemical performance and cyclability, as cathode material for ZIB. The novel strategy described in this study is an essential step for the development of binder-free δ-MnO2-C fiber composite with a well-ordered stacking of δ-MnO2 sheets. This study also demonstrated comparable electrochemical performance between the turbostratic [Formula: see text]-MnO2 sheets and the well-ordered stacked δ-MnO2 sheets.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Corpuz RD,De Juan LMZ,Praserthdam S,Pornprasertsuk R,Yonezawa T,Nguyen MT,Kheawhom Sdoi
10.1038/s41598-019-51692-xsubject
Has Abstractpub_date
2019-10-22 00:00:00pages
15107issue
1issn
2045-2322pii
10.1038/s41598-019-51692-xjournal_volume
9pub_type
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