Fu, Qiang ; Schwarz, Björn ; Ding, Ziming ; Sarapulova, Angelina ; Weidler, Peter G. ; Missyul, Alexander ; Etter, Martin ; Welter, Edmund ; Hua, Weibo ; Knapp, Michael ; Dsoke, Sonia ; Ehrenberg, Helmut (2023)
Guest Ion‐Dependent Reaction Mechanisms of New Pseudocapacitive Mg₃V₄(PO₄)₆/Carbon Composite as Negative Electrode for Monovalent‐Ion Batteries.
In: Advanced Science, 10 (11)
doi: 10.1002/advs.202207283
Article, Bibliographie
This is the latest version of this item.
Abstract
Polyanion‐type phosphate materials, such as M₃V₂(PO₄)₃ (M = Li/Na/K), are promising as insertion‐type negative electrodes for monovalent‐ion batteries including Li/Na/K‐ion batteries (lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), and potassium‐ion batteries (PIBs)) with fast charging/discharging and distinct redox peaks. However, it remains a great challenge to understand the reaction mechanism of materials upon monovalent‐ion insertion. Here, triclinic Mg₃V₄(PO₄)₆/carbon composite (MgVP/C) with high thermal stability is synthesized via ball‐milling and carbon‐thermal reduction method and applied as a pseudocapacitive negative electrode in LIBs, SIBs, and PIBs. In operando and ex situ studies demonstrate the guest ion‐dependent reaction mechanisms of MgVP/C upon monovalent‐ion storage due to different sizes. MgVP/C undergoes an indirect conversion reaction to form Mg⁰, V⁰, and Li₃PO₄ in LIBs, while in SIBs/PIBs the material only experiences a solid solution with the reduction of V³⁺ to V²⁺. Moreover, in LIBs, MgVP/C delivers initial lithiation/delithiation capacities of 961/607 mAh g⁻¹ (30/19 Li⁺ ions) for the first cycle, despite its low initial Coulombic efficiency, fast capacity decay for the first 200 cycles, and limited reversible insertion/deinsertion of 2 Na⁺/K⁺ ions in SIBs/PIBs. This work reveals a new pseudocapacitive material and provides an advanced understanding of polyanion phosphate negative material for monovalent‐ion batteries with guest ion‐dependent energy storage mechanisms.
| Item Type: | Article |
|---|---|
| Erschienen: | 2023 |
| Creators: | Fu, Qiang ; Schwarz, Björn ; Ding, Ziming ; Sarapulova, Angelina ; Weidler, Peter G. ; Missyul, Alexander ; Etter, Martin ; Welter, Edmund ; Hua, Weibo ; Knapp, Michael ; Dsoke, Sonia ; Ehrenberg, Helmut |
| Type of entry: | Bibliographie |
| Title: | Guest Ion‐Dependent Reaction Mechanisms of New Pseudocapacitive Mg₃V₄(PO₄)₆/Carbon Composite as Negative Electrode for Monovalent‐Ion Batteries |
| Language: | English |
| Date: | 2023 |
| Place of Publication: | Darmstadt |
| Publisher: | Wiley-VCH |
| Journal or Publication Title: | Advanced Science |
| Volume of the journal: | 10 |
| Issue Number: | 11 |
| Collation: | 12 Seiten |
| DOI: | 10.1002/advs.202207283 |
| Corresponding Links: | |
| Abstract: | Polyanion‐type phosphate materials, such as M₃V₂(PO₄)₃ (M = Li/Na/K), are promising as insertion‐type negative electrodes for monovalent‐ion batteries including Li/Na/K‐ion batteries (lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), and potassium‐ion batteries (PIBs)) with fast charging/discharging and distinct redox peaks. However, it remains a great challenge to understand the reaction mechanism of materials upon monovalent‐ion insertion. Here, triclinic Mg₃V₄(PO₄)₆/carbon composite (MgVP/C) with high thermal stability is synthesized via ball‐milling and carbon‐thermal reduction method and applied as a pseudocapacitive negative electrode in LIBs, SIBs, and PIBs. In operando and ex situ studies demonstrate the guest ion‐dependent reaction mechanisms of MgVP/C upon monovalent‐ion storage due to different sizes. MgVP/C undergoes an indirect conversion reaction to form Mg⁰, V⁰, and Li₃PO₄ in LIBs, while in SIBs/PIBs the material only experiences a solid solution with the reduction of V³⁺ to V²⁺. Moreover, in LIBs, MgVP/C delivers initial lithiation/delithiation capacities of 961/607 mAh g⁻¹ (30/19 Li⁺ ions) for the first cycle, despite its low initial Coulombic efficiency, fast capacity decay for the first 200 cycles, and limited reversible insertion/deinsertion of 2 Na⁺/K⁺ ions in SIBs/PIBs. This work reveals a new pseudocapacitive material and provides an advanced understanding of polyanion phosphate negative material for monovalent‐ion batteries with guest ion‐dependent energy storage mechanisms. |
| Uncontrolled Keywords: | in operando synchrotron diffraction, in operando X‐ray absorption spectroscopy, magnetic properties, monovalent‐ion batteries, triclinic Mg₃V₄(PO₄)₆ |
| Classification DDC: | 600 Technology, medicine, applied sciences > 660 Chemical engineering |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > In-situ electron microscopy |
| Date Deposited: | 02 Aug 2024 12:51 |
| Last Modified: | 02 Aug 2024 12:51 |
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| Suche nach Titel in: | TUfind oder in Google |
Available Versions of this Item
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Guest Ion‐Dependent Reaction Mechanisms of New Pseudocapacitive Mg₃V₄(PO₄)₆/Carbon Composite as Negative Electrode for Monovalent‐Ion Batteries. (deposited 28 Apr 2023 12:42)
- Guest Ion‐Dependent Reaction Mechanisms of New Pseudocapacitive Mg₃V₄(PO₄)₆/Carbon Composite as Negative Electrode for Monovalent‐Ion Batteries. (deposited 02 Aug 2024 12:51) [Currently Displayed]
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