Biomimetic Straw‐Like Bundle Cobalt‐Doped Fe<sub>2</sub>O<sub>3</sub> Electrodes towards Superior Lithium‐Ion Storage

Liu, Miao; Liu, Yongmei; Li, Youpeng; Wang, Kang; Guo, Yayun; Li, Yanxin; Zhao, Lingzhi

doi:10.1002/chem.201805546

Cited by 18 publications

(3 citation statements)

References 56 publications

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“…However, when the scanning rate increased from 5 to 100 mV/s, the contour shape of the curve remains almost unchanged, and the cyclic curve approximated the center symmetry rectangle, indicating excellent capacitive behavior and rate capability. [55][56][57] The GCD tests of B-PANI 0.03 //SAS 0.15 , B-PANI 0.06 //SAS 0.15 , and B-PANI 0.12 //SAS 0.15 were performed at a current density of 200 μA/cm 2 , and the test results are shown in Figure 6a. According to formula (2), the areal capacitance are 33.2 mF/ cm 2 , 135 mF/cm 2 , and 128 mF/cm 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Sodium Alginate/Zwitterionic Polymer Gel Electrolyte for Integrated All‐Solid‐State Supercapacitors

Hou,

Wang,

Wang

2023

ChemNanoMat

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All‐solid‐state stretchable supercapacitors (SSSCs) have attracted widespread attention in the wearable and medical fields because of their nontoxic, safe, and environmentally friendly characteristics. In this paper, a dual network hydrogel polymer was synthesized by a one‐pot method, which was constructed from sodium alginate (SA) and zwitterion copolymer of acrylamide (AM) and sulfobetaine methacrylate (SBMA). The dual network hydrogel polymerSAm/P(AM‐co‐SBMA (SASm for short) were immersed in 1 M H2SO4 electrolyte to obtain gel polymer electrolytes (GPEs). Stretchable electrodes were synthesized on the matrix of SASm gels. Non‐integrated all‐solid‐state stretchable supercapacitors (non‐integrated SSSCs), integrated all‐solid‐state supercapacitors (SSCs) and integrated SSSCs were all assembled into the ‘sandwich’ structure. The elongation of the integrated SSSC is the best and reaches 280 %, and its areal capacitance is 1.96 mF/cm2 under a current destiny of 50 μA/cm2, and the capacitance still remains 95 % of the initial value after 10000 charge and discharge cycles, and its energy density is 5.8×10−2 μWh/cm2 at a power density of 2.9×10−2 mW/cm2. This integrated SSSC has excellent cycling stability while maintaining good tensile properties.

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Section: Resultsmentioning

confidence: 99%

Sodium Alginate/Zwitterionic Polymer Gel Electrolyte for Integrated All‐Solid‐State Supercapacitors

Hou,

Wang,

Wang

2023

ChemNanoMat

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“…1c, diffraction peaks at 24.2°, 33.2°, 35.6°, 40.9°, 49.5°, 54.9°, and 62.5° were showed for HNF-400, corresponding to (0 1 2), (1 0 4), (1 1 0), (1 1 3), (0 2 4), (1 1 6), and (2 1 4) planes of α-Fe 2 O 3 (JCPDS card no. 33-0664) [27,28]. Meanwhile, the diffraction peaks indexed to γ-Fe 2 O 3 (JCPDS card No.39-1346) at 30.3°, 35.6°, 43.3°, 54.9°, and 57.3° appeared, indicating the presence of γ-Fe 2 O 3 .…”

Section: Physical Propertiesmentioning

confidence: 99%

Porous Fe2O3 nanorod-decorated hollow carbon nanofibers for high-rate lithium storage

Long

Yuan

Shi

et al. 2021

Adv Compos Hybrid Mater

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Transition metal oxides (TMOs) are considered as promising anode materials for lithium-ion batteries in comparison with conventional graphite anode. However, TMO anodes suffer severe volume expansion during charge/discharge process. In this respect, a porous Fe2O3 nanorod-decorated hollow carbon nanofiber (HNF) anode is designed via a combined electrospinning and hydrothermal method followed by proper annealing. FeOOH/PAN was prepared as precursors and sacrificial templates, and porous hollow Fe2O3@carbon nanofiber (HNF-450) composite is formed at 450 °C in air. As anode materials for lithium-ion batteries, HNF-450 exhibits outstanding rate performance and cycling stability with a reversible discharge capacity of 1398 mAh g−1 after 100 cycles at a current density of 100 mA g−1. Specific capacities 1682, 1515, 1293, 987, and 687 mAh g−1 of HNF-450 are achieved at multiple current densities of 200, 300, 500, 1000, and 2000 mA g−1, respectively. When coupled with commercial LiCoO2 cathode, the full cell delivered an outstanding initial charge/discharge capacity of 614/437 mAh g−1 and stability at different current densities. The improved electrochemical performance is mainly attributed to the free space provided by the unique porous hollow structure, which effectively alleviates the volume expansion and facilitates the exposure of more active sites during the lithiation/delithiation process. Graphical abstract Porous Fe2O3 nanorod-decorated hollow carbon nanofibers exhibit outstanding rate performance and cycling stability with a high reversible discharge capacity.

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“…25−28 However, the main bottlenecks of further utilization of Fe 2 O 3 for energy storage are its inferior electrical conductivity and slow reaction kinetics. 29 There are tremendous efforts to circumvent the aforementioned issues, for example, the constructed nanostructured Fe 2 O 3 with nanoneedle morphology 30 and Fe 2 O 3 -based composite with a core− shell structure. 7 Among these approaches, fabricating Fe 2 O 3based composite electrodes is a reliable and promising approach to enhance the electrochemical performance, because appropriate composites can substantially improve the electronic conductivity and increase electrochemical active sites.…”

Section: Introductionmentioning

confidence: 99%

Cu₉S₅/Fe₂O₃ Nanospheres as Advanced Negative Electrode Materials for High Performance Battery-like Hybrid Capacitors

Luo

Han

et al. 2022

ACS Appl. Energy Mater.

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In our work, a Cu9S5/Fe2O3 composite with nanosphere morphology is prepared by an efficient one-pot solvothermal selective sulfurization. The structure investigation confirms that there is uneven charge distribution at the interfaces of Cu9S5 and Fe2O3. Furthermore, the corresponding electrochemical measurements reveal the detailed redox kinetics process about Cu2+/Cu+, Fe3+/Fe2+, and (S2)−/S2–. When the obtained Cu9S5/Fe2O3 composite is used as a negative electrode, it exhibits a high specific capacity (348.2 mA h g–1 at 1 A g–1) with good rate capability. Moreover, a hybrid capacitor (HCP) assembled with Cu9S5/Fe2O3 as negative and Ni–Co hydroxide/Cu(OH)2/CF as positive electrodes, respectively, shows a high energy density with a corresponding high power density (64.54 W h kg–1 at 757.81 W kg–1) and a high specific capacitance (47 mA h g–1 at 1 A g–1) with a capacity retention of 45.68% (21.5 mA h g–1) even at 20 A g–1 in a solid-state gel electrolyte. Thus, a facial fabricated anode material with outstanding electrochemical properties for HCPs is provided.

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Biomimetic Straw‐Like Bundle Cobalt‐Doped Fe₂O₃ Electrodes towards Superior Lithium‐Ion Storage

Cited by 18 publications

References 56 publications

Sodium Alginate/Zwitterionic Polymer Gel Electrolyte for Integrated All‐Solid‐State Supercapacitors

Sodium Alginate/Zwitterionic Polymer Gel Electrolyte for Integrated All‐Solid‐State Supercapacitors

Porous Fe2O3 nanorod-decorated hollow carbon nanofibers for high-rate lithium storage

Cu₉S₅/Fe₂O₃ Nanospheres as Advanced Negative Electrode Materials for High Performance Battery-like Hybrid Capacitors

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Biomimetic Straw‐Like Bundle Cobalt‐Doped Fe2O3 Electrodes towards Superior Lithium‐Ion Storage

Cited by 18 publications

References 56 publications

Sodium Alginate/Zwitterionic Polymer Gel Electrolyte for Integrated All‐Solid‐State Supercapacitors

Sodium Alginate/Zwitterionic Polymer Gel Electrolyte for Integrated All‐Solid‐State Supercapacitors

Porous Fe2O3 nanorod-decorated hollow carbon nanofibers for high-rate lithium storage

Cu9S5/Fe2O3 Nanospheres as Advanced Negative Electrode Materials for High Performance Battery-like Hybrid Capacitors

Contact Info

Product

Resources

About

Biomimetic Straw‐Like Bundle Cobalt‐Doped Fe₂O₃ Electrodes towards Superior Lithium‐Ion Storage

Cu₉S₅/Fe₂O₃ Nanospheres as Advanced Negative Electrode Materials for High Performance Battery-like Hybrid Capacitors