Storage of Lithium-Ion by Phase Engineered MoO3 Homojunctions

Ng, Dickon H. L.; Li, Sheng; Li, Jun; Huang, Jinning; Cui, Yingxue; Wang, Chuan

doi:10.3390/nano12213762

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…(Figure 5) MoO3 has a broad oxidation peak at -0.43 V and no obvious reduction peak in this range. PEDOT: PSS has an oxidation peak at -0.02 V and a reduction peak at -0.55 V. In the composition, the peak at -0.43 V becomes a shoulder and a new pair of redox peaks appear at -0.18 V/ -0.09 V. Based on the literature, more than a few peaks were found in the CV during the Li + intercalation process of MoO3, which are attributed to the multi-step Li + intercalation in interlayer and intralayer spaces of MoO3 [21]. The appearance of new peaks means that more active sites are involved in the Li + intercalation process, which corresponds to the larger enclosed area of the composite than that of MoO3.…”

Section: Electrochemical Propertiesmentioning

confidence: 96%

Preparation and characterization of molybdenum trioxide/poly(3,4-ethylenedioxythiophene): Polystyrene sulphonate nanocomposites for electrochromic application.

Sagir Ziya’ulhaq,

TH Darma

2023

World J. Adv. Eng. Technol. Sci.

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Electrochromic processes are mostly characterized by colour change arising from the energy of a chemical reaction involving electron transfer. Transition metal oxides of tungsten, molybdenum, iridium, and nickel show the most intense Electrochromic colour changes and photochemical stability of about 100 cycles compared to organic electrochromes which are susceptible to photochemical degradation. The prospect of conjugated polymers (comprising of metal oxides and polymers) has opened a new dimension on improving the Electrochromic performance of the transition metal oxides. In this work, solution growth methods were employed in preparing a MoO3/PEDOT: PSS composite layer by adding PEDOT: PSS into MoO3 aqueous dispersion resulting in an electrostatic interaction between MoO3 and PEDOT: PSS for electrochromic application. This composite has shown a long-term stability up to more than 550 cycles which shows higher potential specific capacitance than WO3/PEDOT: PSS. This approach has significantly improved the stability issue of MoO3 and enhances the potential of MoO3-based materials for electrochromic applications. The semi crystalline nature of MoO3-300 °C was further proved by FE-SEM observation of the MoO3 nanoparticles. The particle size shown in the images corresponds with FE-SEM result and polycrystalline structure was observed under high magnification. The polycrystalline nature of the MoO3 particles favors their electrochemical stability, while their small size facilitates their effective interactions with PEDOT: PSS. The electrochemical properties of MoO3, PEDOT: PSS and composite were further studied by cyclic voltammetry (CV) from -1 V to +1 V. MoO3 has a broad oxidation peak at -0.43 V and no obvious reduction peak in this range. PEDOT: PSS has an oxidation peak at -0.02 V and a reduction peak at -0.55 V. In the composite, the peak at -0.43 V becomes a shoulder and a new pair of redox peaks appear at -0.18 V/-0.09 V.

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Section: Electrochemical Propertiesmentioning

confidence: 96%

Preparation and characterization of molybdenum trioxide/poly(3,4-ethylenedioxythiophene): Polystyrene sulphonate nanocomposites for electrochromic application.

Sagir Ziya’ulhaq,

TH Darma

2023

World J. Adv. Eng. Technol. Sci.

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“…Additionally, carbon shells enhance conductivity and significantly reduce the charge transfer resistance of Si‐based anodes. [ 154,311–313 ] The double‐shelled hollow structures effectively tune the vigorous volume change, facilitates the formation of a highly stable SEI layer, shortens the electron/lithium‐ion transport distances and provides fast electron transport in the interconnected hollow structure. [ 314 ] Thus, a compact micron‐sized composite anode with a tight binding and double‐shell architecture possesses superior deformation resistance and electrical conductivity, contributing to excellent cycling stability and good rate capability in a thick electrode.…”

Section: Self‐healing Electrodesmentioning

confidence: 99%

Bio‐Inspired Electrodes with Rational Spatiotemporal Management for Lithium‐Ion Batteries

Song,

Li,

Gao

et al. 2024

Advanced Science

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Lithium‐ion batteries (LIBs) are currently the predominant energy storage power source. However, the urgent issues of enhancing electrochemical performance, prolonging lifetime, preventing thermal runaway‐caused fires, and intelligent application are obstacles to their applications. Herein, bio‐inspired electrodes owning spatiotemporal management of self‐healing, fast ion transport, fire‐extinguishing, thermoresponsive switching, recycling, and flexibility are overviewed comprehensively, showing great promising potentials in practical application due to the significantly enhanced durability and thermal safety of LIBs. Taking advantage of the self‐healing core–shell structures, binders, capsules, or liquid metal alloys, these electrodes can maintain the mechanical integrity during the lithiation–delithiation cycling. After the incorporation of fire‐extinguishing binders, current collectors, or capsules, flame retardants can be released spatiotemporally during thermal runaway to ensure safety. Thermoresponsive switching electrodes are also constructed though adding thermally responsive components, which can rapidly switch LIB off under abnormal conditions and resume their functions quickly when normal operating conditions return. Finally, the challenges of bio‐inspired electrode designs are presented to optimize the spatiotemporal management of LIBs. It is anticipated that the proposed electrodes with spatiotemporal management will not only promote industrial application, but also strengthen the fundamental research of bionics in energy storage.

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“…Compared with traditional heterogeneous interfaces, the heterophase homogeneous interface has a better ability to promote charge transfer because the unique interface formed by similar chemical components brings a more continuous and rapid electron transfer rate. This technique has gained widespread development in the field of photoelectric energy and has gradually been applied in Li-ion batteries, Li–S batteries, and Na-ion batteries. − It is essential to further investigate the internal influence mechanism of a homogeneous interface on the Zn 2+ insertion/extraction process.…”

Section: Introductionmentioning

confidence: 99%

Phase-Modified Strongly Coupled δ/ε-MnO₂ Homojunction Cathode for Kinetics-Enhanced Zinc-Ion Batteries

Wan,

Liu,

Xia

et al. 2024

Inorg. Chem.

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Rechargeable Zn-MnO 2 batteries using mild water electrolytes have garnered significant interest owing to their impressive theoretical energy density and eco-friendly characteristics. However, MnO 2 suffers from huge structural changes during the cycles, resulting in very poor stability at high charge−discharge depths. Briefly, the above problems are caused by slow kinetic processes and the dissolution of Mn atoms in the cycles. In this paper, a 2D homojunction electrode material (δ/ε-MnO 2 ) based on δ-MnO 2 and ε-MnO 2 has been prepared by a two-step electrochemical deposition method. According to the DFT calculations, the charge transfer and bonding between interfaces result in the generation of electronic states near the Fermi surface, giving δ/ε-MnO 2 a more continuous distribution of electron states and better conductivity, which is conducive to the rapid insertion/extraction of Zn 2+ and H + . Moreover, the strongly coupled Mn− O−Mn interfacial bond can effectively impede dissolution of Mn atoms and thus maintain the structural integrity of δ/ε-MnO 2 during the cycles. Accordingly, the δ/ε-MnO 2 cathode exhibits high capacity (383 mAh g −1 at 0.1 A g −1 ), superior rate performance (150 mAh g −1 at 5 A g −1 ), and excellent cycling stability over 2000 cycles (91.3% at 3 A g −1 ). Profoundly, this unique homojunction provides a novel paradigm for reasonable selection of different components.

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Storage of Lithium-Ion by Phase Engineered MoO3 Homojunctions

Cited by 6 publications

References 35 publications

Preparation and characterization of molybdenum trioxide/poly(3,4-ethylenedioxythiophene): Polystyrene sulphonate nanocomposites for electrochromic application.

Preparation and characterization of molybdenum trioxide/poly(3,4-ethylenedioxythiophene): Polystyrene sulphonate nanocomposites for electrochromic application.

Bio‐Inspired Electrodes with Rational Spatiotemporal Management for Lithium‐Ion Batteries

Phase-Modified Strongly Coupled δ/ε-MnO₂ Homojunction Cathode for Kinetics-Enhanced Zinc-Ion Batteries

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Storage of Lithium-Ion by Phase Engineered MoO3 Homojunctions

Cited by 6 publications

References 35 publications

Preparation and characterization of molybdenum trioxide/poly(3,4-ethylenedioxythiophene): Polystyrene sulphonate nanocomposites for electrochromic application.

Preparation and characterization of molybdenum trioxide/poly(3,4-ethylenedioxythiophene): Polystyrene sulphonate nanocomposites for electrochromic application.

Bio‐Inspired Electrodes with Rational Spatiotemporal Management for Lithium‐Ion Batteries

Phase-Modified Strongly Coupled δ/ε-MnO2 Homojunction Cathode for Kinetics-Enhanced Zinc-Ion Batteries

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Phase-Modified Strongly Coupled δ/ε-MnO₂ Homojunction Cathode for Kinetics-Enhanced Zinc-Ion Batteries