A rod-on-tube CoMoO4@hydrogel composite as lithium-ion battery anode with high capacity and stable rate-performance
نویسندگان
چکیده
Hierarchical materials have been considered promising for secondary battery electrodes owing to their capability of accommodating volumetric change active and providing short pathways rapid transportation ions electrons. Herein, we present a rod-on-tube composite consisting cobalt molybdate (CoMoO4) nanotubes coating with polyaniline (PANI) hydrogel nanorods, which exhibits high electrochemical performance as Li-ion anode. The hierarchical CoMoO4@PANI is prepared through in-situ polymerizing PANI nanorods on the CoMoO4 nanotubes. structure could alleviate during lithiation-delithiation, improve conductivity electron transfer. When cycling at 0.5 A g-1, presented anodes exhibit large capacity 805 mAh g-1 after 150 cycles along Coulombic efficiency 99%, are both exceeding those pristine CoMoO4. well-recoverable rate-performance achieved. Furthermore, density state (DOS) band gap also investigated by using functional theory (DFT) calculations.
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ژورنال
عنوان ژورنال: Journal of Alloys and Compounds
سال: 2021
ISSN: ['0925-8388', '1873-4669']
DOI: https://doi.org/10.1016/j.jallcom.2020.157648