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Issue 15, 2013
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Free-standing and binder-free lithium-ion electrodes based on robust layered assembly of graphene and Co3O4 nanosheets

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Abstract

Free-standing and binder-free Co3O4/graphene films were fabricated through vacuum filtration and thermal treatment processes, in which sheet-like Co3O4 and graphene were assembled into a robust lamellar hierarchical structure via electrostatic interactions. The morphological compatibility coupled with strong interfacial interactions between Co3O4 and graphene significantly promoted the interfacial electron and lithium ion transport. When used as a binder-less and free-standing electrode for lithium-ion batteries, the hybrid film delivered a high specific capacity (∼1400 mA h g−1 at 100 mA g−1 based on the total electrode weight), enhanced rate capability and excellent cyclic stability (∼1200 mA h g−1 at 200 mA g−1 after 100 cycles). This effective strategy will provide new insight into the design and synthesis of many other composite electrodes for high-performance lithium-ion batteries.

Graphical abstract: Free-standing and binder-free lithium-ion electrodes based on robust layered assembly of graphene and Co3O4 nanosheets

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Publication details

The article was received on 21 Mar 2013, accepted on 19 May 2013 and first published on 21 May 2013


Article type: Paper
DOI: 10.1039/C3NR01392H
Nanoscale, 2013,5, 6960-6967

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    Free-standing and binder-free lithium-ion electrodes based on robust layered assembly of graphene and Co3O4 nanosheets

    R. Wang, C. Xu, J. Sun, Y. Liu, L. Gao and C. Lin, Nanoscale, 2013, 5, 6960
    DOI: 10.1039/C3NR01392H

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