Co3O4 nanostructures with a high rate performance as anode materials for lithium-ion batteries, prepared via book-like cobalt-organic frameworks

Bo Yan, Lin Chen, Yuanjun Liu, Guoxing Zhu, Chunguang Wang, Han Zhang, Gang Yang*, Haitao Ye, Aihua Yuan

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The self-assembly of cobalt coordination frameworks (Co-CPs) with a two-dimensional morphology is demonstrated by a solvothermal method. The morphology of the Co-CPs has been controlled by various solvothermal conditions. The two-dimensional nanostructures agglomerated by Co3O4 nanoparticles remained after the pyrolysis of the Co-CPs. The as-synthesized Co3O4 anode material is characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge-discharge measurements. The morphology of Co3O4 plays a crucial role in the high performance anode materials for lithium batteries. The Co3O4 nanoparticles with opened-book morphology deliver a high capacity of 597 mA h g-1 after 50 cycles at a current rate of 800 mA g-1. The opened-book morphology of Co3O4 provides efficient lithium ion diffusion tunnels and increases the electrolyte/Co3O4 contact/interfacial area. At a relatively high current rate of 1200 mA g-1, Co3O4 with opened-book morphology delivers an excellent rate capability of 574 mA h g-1.

Original languageEnglish
Pages (from-to)10227-10234
Number of pages8
JournalCrystengcomm
Volume16
Issue number44
Early online date15 Sep 2014
DOIs
Publication statusPublished - 31 Dec 2014

Bibliographical note

Funding: National Natural Science Foundation (51072072, 51272095, 51172032); and European Union Marie Curie FP7-IRSES project (no: 295208).

Electronic supplementary information: DOI 10.1039/c4ce01277a

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