Fe3O4/Graphene Composite Anode Material for Fast-Charging Li-Ion Batteries

被引：19

作者：

Staffolani, Antunes ^{[1
]}

Darjazi, Hamideh ^{[1
]}

Carbonari, Gilberto ^{[1
,2
]}

Maroni, Fabio ^{[1
,2
]}

Gabrielli, Serena ^{[1
]}

Nobili, Francesco ^{[1
]}

机构：

[1] Univ Camerino, Sch Sci & Technol, Chem Div, I-62032 Camerino, Italy

[2] Zentrum Sonnenenergie & Wasserstoff Forsch Baden, D-89081 Ulm, Germany

来源：

MOLECULES | 2021年 / 26卷 / 14期

关键词：

Li-ion batteries; conversion materials; graphene; anode materials; electrochemical impedance spectroscopy; HIGH-PERFORMANCE ANODE; FE3O4; NANOPARTICLES; MAGNETITE NANOPARTICLES; LITHIUM; GRAPHENE; CAPACITY; NANOCOMPOSITE; ELECTRODES; STATE; STABILITY;

D O I：

10.3390/molecules26144316

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Composite anode material based on Fe3O4 and reduced graphene oxide is prepared by base-catalysed co-precipitation and sonochemical dispersion. Structural and morphological characterizations demonstrate an effective and homogeneous embedding of Fe3O4 nanoparticles in the carbonaceous matrix. Electrochemical characterization highlights specific capacities higher than 1000 mAh g(-1) at 1C, while a capacity of 980 mAhg(-1) is retained at 4C, with outstanding cycling stability. These results demonstrate a synergistic effect by nanosize morphology of Fe3O4 and inter-particle conductivity of graphene nanosheets, which also contribute to enhancing the mechanical and cycling stability of the electrode. The outstanding capacity delivered at high rates suggests a possible application of the anode material for high-power systems.

引用

页数：14

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