Fe2O3/hemp straw-based porous carbon composite for supercapacitor electrode materials

Jiang, Xia; Shi, Gaofeng; Wang, Guoying; Mishra, Puranjan; Du, Jianwen

doi:10.1007/s11581-020-03547-z

Cited by 38 publications

(9 citation statements)

References 47 publications

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“…The five well‐defined peaks match well with the crystal planes (101), (004), (200), (211) and (204), which are consistent with the standard card (no. 21‐1272) 22 . The sharp diffraction peaks indicate the perfect crystallization of the as‐prepared GTO composite.…”

Section: Resultsmentioning

confidence: 95%

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Graphene‐wrapped TiO₂ composites as advanced anode materials for high electrochemical performance Li‐ion batteries

Wang

Zhang

Huang

2022

J of Chemical Tech & Biotech

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Background Developing new anode materials with high specific capacity for high‐performance lithium (Li)‐ion batteries is significant for meeting high energy density demand. Composites of graphene‐wrapped titania (TiO2) nanoparticles (GTO) have been successfully synthesized via a facile method for anode material in Li‐ion batteries. Results The as‐prepared GTO composites exhibit remarkable electrochemical performance, including initial high specific capacity of 652.8 mAh g−1 and outstanding cycling stability (198 mAh g−1 after 300 cycles). Conclusions The outstanding performance is due to the positive effect of graphene, which acts both as electron conductor and volume buffer layer. This work further demonstrates that GTO composites could acts as a stable anode for reversible Li‐ion batteries. © 2022 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 95%

“…21-1272). 22 The sharp diffraction peaks indicate the perfect crystallization of the as-prepared GTO composite. Figure 1(b) shows the Raman spectrum of the GTO composites.…”

Section: Electrochemical Measurementmentioning

confidence: 99%

Graphene‐wrapped TiO₂ composites as advanced anode materials for high electrochemical performance Li‐ion batteries

Wang

Zhang

Huang

2022

J of Chemical Tech & Biotech

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“…Jiang et al [40] have synthesized Fe 2 O 3 /porous carbon nanocomposites (Fe 2 O 3 / HAC) by hydrothermal method. The porous carbon prevents the agglomeration of Fe 2 O 3 nanoparticles and minimizes the ion diffusion path on the electrode surface, providing more flow channels for the ions.…”

Section: Fe 2 O 3 Based Electrodesmentioning

confidence: 99%

Application of Iron Oxide in Supercapacitor

Lakra¹,

Kumar²,

Sahoo³

et al. 2022

Iron Oxide Nanoparticles

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Iron oxide nanostructures have been considered very promising material as electrode in electrochemical energy storage devices because of their lower cost of synthesis and high theoretical charge storage capacity. Iron oxide nanoparticles and their nanocomposites have performed excellent in supercapacitor. Iron oxide as negative electrode has extended the working voltage window of a supercapacitor. The main problems associated with iron oxide based electrodes are their poor electrical conductivity and cycle stability. Therefore, a conductive carbon matrix has been added to the iron oxide based electrodes to improve the electrochemical performance. In this chapter, recent progress on iron oxide and its composite with different materials as electrode in supercapacitor is summarized. The various synergistic effects of nanocomposites and compositional engineering to enhance the electrochemical performance of iron oxide are also discussed.

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“…Compared to the values of bare Fe 2 O 3 nanorods (370 A g −1 ) and HPC (323 A g −1 ) electrodes at 1 A g −1 , the maximum C sp of the α-Fe 2 O 3 /HPC hybrid electrode is 706 F g −1 , indicating a larger capacitive property. This result is superior to other recently reported iron oxide-based electrodes at the same current density, such as Fe 2 O 3 /graphene (226 F g −1 ) (Wang et al, 2013), Fe 2 O 3 /CNT (204 F g −1 ) (Yue et al, 2018), Fe 2 O 3 /N-doped CNT (264 F g −1 ) (Gnana Sundara Raj et al, 2020), α-Fe 2 O 3 /C (280 F g −1 ) (Dong et al, 2018), and Fe 2 O 3 /hemp straw (256 F g −1 ) (Jiang et al, 2020). At 10 A g −1 , the C sp of α-Fe 2 O 3 /HPC is 410 F g −1 , showing a decrease as the current density increases.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

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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Fe2O3/hemp straw-based porous carbon composite for supercapacitor electrode materials

Cited by 38 publications

References 47 publications

Graphene‐wrapped TiO₂ composites as advanced anode materials for high electrochemical performance Li‐ion batteries

Graphene‐wrapped TiO₂ composites as advanced anode materials for high electrochemical performance Li‐ion batteries

Application of Iron Oxide in Supercapacitor

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

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Fe2O3/hemp straw-based porous carbon composite for supercapacitor electrode materials

Cited by 38 publications

References 47 publications

Graphene‐wrapped TiO2 composites as advanced anode materials for high electrochemical performance Li‐ion batteries

Graphene‐wrapped TiO2 composites as advanced anode materials for high electrochemical performance Li‐ion batteries

Application of Iron Oxide in Supercapacitor

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

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Product

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Graphene‐wrapped TiO₂ composites as advanced anode materials for high electrochemical performance Li‐ion batteries

Graphene‐wrapped TiO₂ composites as advanced anode materials for high electrochemical performance Li‐ion batteries