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Three-dimensional nanocomposites with Co3O4 nanosheets parallelly embedded in carbon network walls for enhanced lithium-ion storage

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Abstract

Three-dimensional Co3O4/C nanocomposites are synthesized via a hydrogel assisted synthesis route. The carbon has a three-dimensional interconnected network structure, and ultrathin Co3O4 nanosheets (≈5.0 nm) are parallelly and uniformly embedded in the two-dimensional carbon network walls. This unique structure restricts the aggregation and pulverization of active materials, and ensures the continuity and efficiency of electron and ion transmission during the lithiation/delithiation process. As a result, the Co3O4/C nanocomposites exhibit excellent cycling performance at different current densities. The discharge capacities remain at 905 mA h g−1 after 190 cycles at the current density of 100 mA g−1 and 561 mA h g−1 after 500 cycles at the current density of 2000 mA g−1. Since this approach is facile and large-scale, it is a rational way to engineer high capacity anodes to achieve improved electrochemical performances.

Graphical abstract: Three-dimensional nanocomposites with Co3O4 nanosheets parallelly embedded in carbon network walls for enhanced lithium-ion storage

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Publication details

The article was received on 08 Mar 2019, accepted on 07 May 2019 and first published on 08 May 2019


Article type: Paper
DOI: 10.1039/C9DT01021A
Dalton Trans., 2019, Advance Article

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    Three-dimensional nanocomposites with Co3O4 nanosheets parallelly embedded in carbon network walls for enhanced lithium-ion storage

    F. Wang, Y. Long, J. Zong, M. Zhao, S. Yang and X. Song, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C9DT01021A

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