Progress and development of Fe<sub>3</sub>O<sub>4</sub> electrodes for supercapacitors

Nithya, V.; Arul, N. Sabari

doi:10.1039/c6ta02582j

Cited by 240 publications

(88 citation statements)

References 59 publications

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“…On the other hand, Fe 3 O 4 has been widely used as positive as well as negative electrode material due to its high abundance, low cost and non‐toxicity. Although Fe 3 O 4 has high conductivity and has very high theoretical specific capacitance of 2299 F g −1[15] it could not deliver high energy and power density . The composite materials such as Fe 3 O 4 /rGO, Fe 3 O 4 /SnO 2 and Fe 3 O 4 /Si@C have been attempted aiming to achieve high specific capacitance and enhanced energy density …”

Section: Introductionmentioning

confidence: 99%

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

2018

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The synthesis of a novel chemically coupled hybrid material based on Fe2O3‐Fe3O4 heterostructure and nitrogen‐doped reduced graphene oxide (N‐rGO) for the development of high performance supercapacitor devices is demonstrated. The chemically coupled hybrid material is synthesized in a one‐pot method under hydrothermal condition, resulting in the formation of crystalline α‐Fe2O3 and poorly crystalline/amorphous Fe3O4. The Fe2O3‐Fe3O4 particles have an average size of 30–50 nm. Chemical integration of Fe2O3‐Fe3O4 with N‐rGO through Fe‐O−C bonds is achieved. The chemical coupling of N‐rGO with pseudocapacitive Fe2O3‐Fe3O4 enhances the overall performance of the composite. Two asymmetric supercapacitor devices using the hybrid material either as positive or negative electrode are fabricated. The supercapacitive behaviour is evaluated in terms of specific capacitance, energy density, power density and cycling stability, showing excellent performance. The asymmetric device based on hybrid material as the positive and activated carbon as the negative electrode, delivers a specific capacitance of 111.95 F g−1 at 0.8 A g−1 with an energy density of 44.93 Wh kg−1. The supercapacitor has excellent cycling stability with a capacitance retention of >92 % even after 10000 extensive charge‐discharge cycles. The all‐solid‐state asymmetric supercapacitor device is fabricated using gel electrolyte. Solid‐state devices connected in series successfully light up 29 LEDs.

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Section: Introductionmentioning

confidence: 99%

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

2018

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“…Nevertheless, they still suffer from low specific capacitance and short cycling life, because of their poor electrical conductivity when used as electrode materials alone. Among the metal oxides/hydroxides, iron oxide (Fe 3 O 4 ) is a promising anode for ASCs, due to its remarkable benefits of high theoretical capacity (≈926 mA g −1 ), wide operational potential window (−1.2 to 0.25 V), excellent electrical conductivity (102−103 S cm −1 ), cost‐effectiveness, and biocompatibility . Doping of different metal ions is generally considered a strategy to enhance the electrochemical performance of functional nanomaterials, because the aliovalent metal tends to occupy the sites in the crystalline structure, which could be a beneficial phenomenon to boost the electrochemical performance of electrode materials .…”

Section: Introductionmentioning

confidence: 99%

Hierarchical 3D Cobalt‐Doped Fe₃O₄ Nanospheres@NG Hybrid as an Advanced Anode Material for High‐Performance Asymmetric Supercapacitors

Guo

Balamurugan

et al. 2017

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105

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Hierarchical nanostructure, high electrical conductivity, extraordinary specific surface area, and unique porous architecture are essential properties in energy storage and conversion studies. A new type of hierarchical 3D cobalt encapsulated Fe O nanosphere is successfully developed on N-graphene sheet (Co-Fe O NS@NG) hybrid with unique nanostructure by simple, scalable, and efficient solvothermal technique. When applied as an electrode material for supercapacitors, hierarchical Co-Fe O NS@NG hybrid shows an ultrahigh specific capacitance (775 F g at a current density of 1 A g ) with exceptional rate capability (475 F g at current density of 50 A g ), and admirable cycling performance (97.1% capacitance retention after 10 000 cycles). Furthermore, the fabricated Co-Fe O NS@NG//CoMnO @NG asymmetric supercapacitor (ASC) device exhibits a high energy density of 89.1 Wh kg at power density of 0.901 kW kg , and outstanding cycling performance (89.3% capacitance retention after 10 000 cycles). Such eminent electrochemical properties of the Co-Fe O NS@NG are due to the high electrical conductivity, ultrahigh surface area, and unique porous architecture. This research first proposes hierarchical Co-Fe O NS@NG hybrid as an ultrafast charge-discharge anode material for the ASC device, that holds great potential for the development of high-performance energy storage devices.

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“…[2,3] Pseudocapacitors, in which charges torage is achieved through Faradic redox reactions, provide significantly highere nergy densities, but usually suffer from lower cyclic stability. [4,5] Typical ASCs incorporate electrodes fabricated with iron-containing oxides (such as Fe 2 O 3 ,F e 3 O 4 ,Z nFe 2 O 4 ,a nd NiFe 2 O 4 )a se lectrode mate-rials, [6][7][8][9] which show high capacitance and energy density values, butthese metal oxidesusually have poor electrical conductivity anda re hydrophobic in nature. [4,5] Typical ASCs incorporate electrodes fabricated with iron-containing oxides (such as Fe 2 O 3 ,F e 3 O 4 ,Z nFe 2 O 4 ,a nd NiFe 2 O 4 )a se lectrode mate-rials, [6][7][8][9] which show high capacitance and energy density values, butthese metal oxidesusually have poor electrical conductivity anda re hydrophobic in nature.…”

Section: Introductionmentioning

confidence: 99%

Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe₃O₄ Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials

Vadiyar

Liu

2018

ChemSusChem

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The synthesis of porous activated carbon (specific surface area=1883 m g ), Fe O nanoparticles, and carbon-Fe O (C-Fe O ) nanocomposites from local waste thermocol sheets and rusted iron wires is demonstrated herein. The resulting carbon, Fe O nanoparticles, and C-Fe O composites are used as electrode materials for supercapacitor applications. In particular, C-Fe O composite electrodes exhibit a high specific capacitance of 1375 F g at 1 A g and longer cyclic stability with 98 % capacitance retention over 10 000 cycles. Subsequently, an asymmetric supercapacitor, namely, C-Fe O ∥Ni(OH) /carbon nanotube device, exhibits a high energy density of 91.1 Wh kg and a remarkable cyclic stability, with 98 % capacitance retention over 10 000 cycles. Thus, this work has important implications not only for the fabrication of low-cost electrodes for high-performance supercapacitors, but also for the recycling of waste thermocol sheets and rusted iron wires for value-added reuse.

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Progress and development of Fe₃O₄ electrodes for supercapacitors

Abstract: The recent progress in the development of Fe3O4 based electrodes for supercapacitors is summarized and discussed.

Cited by 240 publications

References 59 publications

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Hierarchical 3D Cobalt‐Doped Fe₃O₄ Nanospheres@NG Hybrid as an Advanced Anode Material for High‐Performance Asymmetric Supercapacitors

Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe₃O₄ Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials

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Progress and development of Fe3O4 electrodes for supercapacitors

Abstract: The recent progress in the development of Fe3O4 based electrodes for supercapacitors is summarized and discussed.

Cited by 240 publications

References 59 publications

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe2O3‐Fe3O4 Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe2O3‐Fe3O4 Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Hierarchical 3D Cobalt‐Doped Fe3O4 Nanospheres@NG Hybrid as an Advanced Anode Material for High‐Performance Asymmetric Supercapacitors

Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe3O4 Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials

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Progress and development of Fe₃O₄ electrodes for supercapacitors

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Asymmetric Supercapacitor Based on Chemically Coupled Hybrid Material of Fe₂O₃‐Fe₃O₄ Heterostructure and Nitrogen‐Doped Reduced Graphene Oxide

Hierarchical 3D Cobalt‐Doped Fe₃O₄ Nanospheres@NG Hybrid as an Advanced Anode Material for High‐Performance Asymmetric Supercapacitors

Utilizing Waste Thermocol Sheets and Rusted Iron Wires to Fabricate Carbon–Fe₃O₄ Nanocomposite‐Based Supercapacitors: Turning Wastes into Value‐Added Materials