Magnetic CoFe2O4 and NiFe2O4 Induced Self-Assembled Graphene Nanoribbon Framework with Excellent Properties for Li-Ion Battery

Xiyu Zhao; Chunyang He; Qiujv Bai; Xiangwen Miao; Cheng Cao; Tianli Wu

doi:10.3390/molecules28104069

Magnetic CoFe₂O₄ and NiFe₂O₄ Induced Self-Assembled Graphene Nanoribbon Framework with Excellent Properties for Li-Ion Battery

Molecules. 2023 May 12;28(10):4069. doi: 10.3390/molecules28104069.

Authors

Xiyu Zhao^{1

2}, Chunyang He¹, Qiujv Bai¹, Xiangwen Miao¹, Cheng Cao¹, Tianli Wu²

Affiliations

¹ Key Laboratory of Hexi Corridor Resources Utilization of Gansu, School of Chemistry and Chemical Engineering, Hexi University, Zhangye 734000, China.
² Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475001, China.

Abstract

A magnetically induced self-assembled graphene nanoribbons (GNRs) method is reported to synthesize MFe₂O₄/GNRs (M = Co,Ni). It is found that MFe₂O₄ compounds not only locate on the surface of GNRs but anchor on the interlayers of GNRs in the diameter of less than 5 nm as well. The in situ growth of MFe₂O₄ and magnetic aggregation at the joints of GNRs act as crosslinking agents to solder GNRs to build a nest structure. Additionally, combining GNRs with MFe₂O₄ helps to improve the magnetism of the MFe₂O₄. As an anode material for Li⁺ ion batteries, MFe₂O₄/GNRs can provide high reversible capacity and cyclic stability (1432 mAh g^-1 for CoFe₂O₄/GNRs and 1058 mAh g^-1 for NiFe₂O₄ at 0.1 A g^-1 over 80 cycles).

Keywords: CoFe2O4; Li battery; NiFe2O4; graphene nanoribbons; magnetism.

Abstract

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