Hydrothermal synthesis and characterization studies of α-Fe2O3/MnO2 nanocomposites for energy storage supercapacitor application

K, Mohamed Racik; Manikandan, A.; Mahendiran, M.; Madhavan, J.; Raj, M. Victor Antony; Mohamed, M. Gulam; Maiyalagan, T.

doi:10.1016/j.ceramint.2019.11.091

Cited by 73 publications

(9 citation statements)

References 49 publications

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“…The detailed surface chemical composition of α-Fe 2 O 3 /HPC was evaluated by XPS measurements. Figure 3B demonstrates the coexistence of C (283.5 eV), O (527.6 eV), and Fe (Fe 2p peaks at 724.6 and 711 eV) (Yun X. et al, 2019;Racik et al, 2020). The high-resolution Fe 2p XPS spectrum exhibits typical Fe 2p 1/2 and 2p 3/2 peaks along with 719.5 eV of satellite peak corresponding to Fe 3+ in α-Fe 2 O 3 ( Figure 3C) (Liang et al, 2018).…”

Section: Electrochemical Measurementsmentioning

confidence: 96%

Porous Fe2O3 Nanorods on Hierarchical Porous Biomass Carbon as Advanced Anode for High-Energy-Density Asymmetric Supercapacitors

Duan

Jiang

2020

Front. Chem.

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In this study, a novel negative electrode material was prepared by aligning α-Fe2O3 nanorods on a hierarchical porous carbon (HPC) skeleton. The skeleton was derived from wheat flour by a facile hydrothermal route to enhance conductivity, improve surface properties, and achieve substantially good electrochemical performances. The α-Fe2O3/HPC electrode exhibits enhanced specific capacitance of 706 F g−1, which is twice higher than that of α-Fe2O3. The advanced α-Fe2O3/HPC//PANI/HPC asymmetrical supercapacitor was built with an expanded voltage of 2.0 V in 1 M Li2SO4, possessing a specific capacitance of 212 F g−1 at 1 A g−1 and a maximum energy density of 117 Wh kg−1 at 1.0 kW kg−1, along with an excellent stability of 5.8% decay in capacitance after 5,000 cycles. This study affords a simple process to develop asymmetric supercapacitors, which exhibit high electrochemical performances and are applicable in next-generation energy storage devices, based on α-Fe2O3 hybrid materials.

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Section: Electrochemical Measurementsmentioning

confidence: 96%

Porous Fe2O3 Nanorods on Hierarchical Porous Biomass Carbon as Advanced Anode for High-Energy-Density Asymmetric Supercapacitors

Duan

Jiang

2020

Front. Chem.

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“…Nonetheless, the weak conductivity of α-Fe 2 O 3 electrodes leads low practical specific capacitance and poor electrochemical stability [19,20]. Manganese dioxide (MnO 2 ) has gained extensive attention in the construction of supercapacitors due to its high oxidation activity [21]. At present, preparing nanocomposite materials utilizing the synergistic effect of two materials not only promotes redox reactions, but also enhance device energy density [22].…”

Section: Introductionmentioning

confidence: 99%

Micro/Nano Energy Storage Devices Based on Composite Electrode Materials

Niu

Shang

2022

Nanomaterials

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It is vital to improve the electrochemical performance of negative materials for energy storage devices. The synergistic effect between the composites can improve the total performance. In this work, we prepare α-Fe2O3@MnO2 on carbon cloth through hydrothermal strategies and subsequent electrochemical deposition. The α-Fe2O3@MnO2 hybrid structure benefits electron transfer efficiency and avoids the rapid decay of capacitance caused by volume expansion. The specific capacitance of the as-obtained product is 615 mF cm−2 at 2 mA cm−2. Moreover, a flexible supercapacitor presents an energy density of 0.102 mWh cm−3 at 4.2 W cm−2. Bending tests of the device at different angles show excellent mechanical flexibility.

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“…[1][2][3][4][5] Polymer nanocomposite structures have many application industries such as electronics, automotive, medical equipment, energy, and aeronautic. [6][7][8][9][10] In recent years, these structures have been successfully produced by additive manufacturing (AM) methods, which have many advantages over the conventional production approaches. [11][12][13][14] AM is the process of converting 3D geometry models created by computer-aided into tangible objects by producing layer by layer without the limitations of the traditional casting, forging, and machining processes.…”

Section: Introductionmentioning

confidence: 99%

Morphological, mechanical, magnetic, and thermal properties of 3D printed functional polymeric structures modified with Fe₂O₃ nanoparticles

et al. 2021

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The Fe 2 O 3 nanoparticle structures, which have many application areas such as electronics, marine, and aviation, have been studying extensively due to the compliance between organic polymer and inorganic Fe 2 O 3 nanoparticles. Nanocomposite structures are successfully produced in the desired complexity with the additive manufacturing method. In the current study, Fe 2 O 3 nanoparticles were doped into the photocurable resin at different concentrations (pristine, 0.25%, 0.5%, and 1% in wt), and the prepared 3D polymer nanocomposite mixtures were printed via stereolithography method. To investigate the morphological, mechanical, magnetic, and thermal properties of the printed nanocomposite structures, scanning electron microscopy, hardness, vibrating sample magnetometer, thermogravimetric analysis, and differential scanning calorimeter analysis were performed, respectively. It was revealed that the Fe 2 O 3 nanoparticles improved the thermal stability of the structures.Moreover, an increase in magnetic properties has been observed up to 459%.

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Hydrothermal synthesis and characterization studies of α-Fe2O3/MnO2 nanocomposites for energy storage supercapacitor application

Cited by 73 publications

References 49 publications

Porous Fe2O3 Nanorods on Hierarchical Porous Biomass Carbon as Advanced Anode for High-Energy-Density Asymmetric Supercapacitors

Porous Fe2O3 Nanorods on Hierarchical Porous Biomass Carbon as Advanced Anode for High-Energy-Density Asymmetric Supercapacitors

Micro/Nano Energy Storage Devices Based on Composite Electrode Materials

Morphological, mechanical, magnetic, and thermal properties of 3D printed functional polymeric structures modified with Fe₂O₃ nanoparticles

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Hydrothermal synthesis and characterization studies of α-Fe2O3/MnO2 nanocomposites for energy storage supercapacitor application

Cited by 73 publications

References 49 publications

Porous Fe2O3 Nanorods on Hierarchical Porous Biomass Carbon as Advanced Anode for High-Energy-Density Asymmetric Supercapacitors

Porous Fe2O3 Nanorods on Hierarchical Porous Biomass Carbon as Advanced Anode for High-Energy-Density Asymmetric Supercapacitors

Micro/Nano Energy Storage Devices Based on Composite Electrode Materials

Morphological, mechanical, magnetic, and thermal properties of 3D printed functional polymeric structures modified with Fe2O3 nanoparticles

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Product

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Morphological, mechanical, magnetic, and thermal properties of 3D printed functional polymeric structures modified with Fe₂O₃ nanoparticles