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Issue 79, 2017, Issue in Progress
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Self-crosslink assisted synthesis of 3D porous branch-like Fe3O4/C hybrids for high-performance lithium/sodium-ion batteries

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Abstract

A facile and effective self-crosslink assisted strategy is developed to fabricate 3D porous branch-like Fe3O4/C hybrids as high-performance anode materials for lithium ion batteries (LIBs) and sodium ion batteries (NIBs). Trivalent iron ions (Fe3+) are used to directly crosslink with biopolymer alginate to form nanoscale branch-like Fe-alginate hybrid nanostructures, which are converted to porous Fe3O4/C hybrids via a simple carbonization process. The resulting hybrids feature ultrafine active nanoparticles (∼5 nm), wrapping by thin graphitic layers, hierarchically nanoscale porous channels, and interconnected robust graphitic frameworks. Applying these in the anodes of LIBs, these structural features enable the hybrids to deliver high capacities of 974 and 570 mA h g−1 at 0.1 and 2 A g−1, respectively, and excellent cyclic stability with capacity retention of 98% after 200 cycles at 0.1 A g−1. In NIBs, reasonable capacities of 339 and 138 mA h g−1 are obtained at 0.05 and 5 A g−1, respectively. The high performance demonstrates the promising potential of the hybrids in next generation anodes for LIBs and NIBs.

Graphical abstract: Self-crosslink assisted synthesis of 3D porous branch-like Fe3O4/C hybrids for high-performance lithium/sodium-ion batteries

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Publication details

The article was received on 23 Aug 2017, accepted on 13 Oct 2017 and first published on 27 Oct 2017


Article type: Paper
DOI: 10.1039/C7RA09348A
RSC Adv., 2017,7, 50307-50316
  • Open access: Creative Commons BY license
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    Self-crosslink assisted synthesis of 3D porous branch-like Fe3O4/C hybrids for high-performance lithium/sodium-ion batteries

    N. Wang, Q. Liu, Y. Li, J. Chen, J. Gu, W. Zhang and D. Zhang, RSC Adv., 2017, 7, 50307
    DOI: 10.1039/C7RA09348A

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