Optimizing engineering of rechargeable aqueous zinc ion batteries to enhance the zinc ions storage properties of cathode material

Huang, Chunmao; Liu, Shenghong; Feng, Jingjie; Yang, Wang; Fan, Qinghua; Kuang, Quan; Dong, Youzhong; Zhao, Yanming

doi:10.1016/j.jpowsour.2021.229528

Cited by 26 publications

(17 citation statements)

References 55 publications

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“…However, as the voltage increases, the lattice spacing changes from a small contraction to a small expansion, which may be due to the change of the interlayer electrostatic force between by the release of hydrated zinc ions. , Finally, when charged to 1.6 V, the (001) peak shifts toward 9.45°, which is consistent with the initial state, implying that the insertion of K + enhances a structure adaptability to the volume expansion and contraction. After one cycle, some weak diffraction peaks located at 17.64, 25.58, and 27.17° vanish, indicating that the initial K 0.54 V 2 O 5 undergoes a phase change. , In addition, there are some new diffraction peaks located at 8.96, 16.25, and 24.47°, which are attributed to the formation of the byproduct Zn 4 (OH) 6 SO 4 ·5H 2 O. , To further understand the structural evolution in the process of charge and discharge, part of the XRD pattern of the subsequent cycles is shown in Figure S8. It is obvious that the position of the strongest peak is consistent with the initial cycle.…”

Section: Resultsmentioning

confidence: 99%

“…48,49 In addition, there are some new diffraction peaks located at 8.96, 16.25, and 24.47°, which are attributed to the formation of the byproduct Zn 4 (OH) 6 SO 4 •5H 2 O. 50,51 To further understand the structural evolution in the process of charge and discharge, part of the XRD pattern of the subsequent cycles is shown in Figure S8. It is obvious that the position of the strongest peak is consistent with the initial cycle.…”

Section: ■ Introductionmentioning

confidence: 99%

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Reversible K_0.54V₂O₅ Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Chen

et al. 2022

ACS Appl. Energy Mater.

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Aqueous zinc-ion batteries (ZIBs) have advantages of nontoxicity and low cost, but the Zn2+ storage mechanism still requires further investigation, giving rise to difficulty in designing a reasonable structure to improve battery performance. Here, K+-inserted layered vanadium oxide (K0.54V2O5) with a nanorod shape is demonstrated as a promising cathode material for ZIBs, and the storage mechanism of zinc ions is explored. This material displays an excellent electrochemical performance, with a capacity of 176 mA h g–1 over 2400 cycles at 5 A g–1, corresponding to a capacity retention of 97%. The attractive performance is due to the layered structure and ions embedded, which improve the gallery spacing and ion diffusion rate. More importantly, this study advances the development of vanadium-based oxides for ZIBs.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Reversible K_0.54V₂O₅ Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Chen

et al. 2022

ACS Appl. Energy Mater.

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“…For Zn 2p 1/2 and Zn 2p 3/2 binding energies (Figure d), the dominant peaks are at 1045.7 and 1023.0 eV in the discharging state, corresponding to the situation of Zn 2+ insertion into the PQTU cathode and coordination with oxygen, sulfur, and nitrogen. Then, the peaks shift to a bigger position at 1044.8 and 1022.0 eV after charging, indicating that Zn 2+ is extracted from PQTU . The ex situ SEM elemental mappings of the PQTU cathode surface (Figure S10) show this cycle process from macroscopic view; the C, O, N, and S mappings of the PQTU cathode present the same individual element intensities in the contrastive cycle states .…”

Section: Results and Discussionmentioning

confidence: 88%

“…Then, the peaks shift to a bigger position at 1044.8 and 1022.0 eV after charging, indicating that Zn 2+ is extracted from PQTU. 65 The ex situ SEM elemental mappings of the PQTU cathode surface (Figure S10) show this cycle process from macroscopic view; the C, O, N, and S mappings of the PQTU cathode present the same individual element intensities in the contrastive cycle states. 66 However, the Zn 2+ mapping first shows an obvious intensity increase from the initial state to the post-discharge state, and then the mapping intensity decreases again after completing the charge process.…”

Section: ■ Results and Discussionmentioning

confidence: 89%

Poly(quinone-thiourea) with Improved Auxiliary Coordination Zn²⁺ Insertion/Extraction Positive Performance for Aqueous Zinc Ion Battery Cathodes

Guo

Liu

Wang

et al. 2021

ACS Sustainable Chem. Eng.

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Sustainable organic quinone-based polymers exhibit numerous promising advantages in cathode application, and suitable structure design is important to improve their electrochemical performances. In this work, a designed organic material structure of redox units linked by auxiliary coordination chains poly(quinone-thiourea) is achieved and used as a cathode for aqueous zinc ion batteries. The cell displays improved electrochemical performances with a maximum discharge specific capacity of 211 mA h g −1 at 0.02 A g −1 and long cycle performance of 83% capacity retention after 1000 cycles under 0.1 A g −1 (118 mA h g −1 initial discharge capacity). The Zn 2+ storage mechanism through the ex situ XPS investigations proves that the oxygen atoms of phenol and the sulfur and nitrogen atoms of the thiourea group all contribute to the Zn 2+ intercalation, which stabilizes the Zn 2+ coordination and improve the specific capacity. The ex situ FT-IR also supports the redox of quinone carbonyl and the coordination of the thiourea group with Zn 2+ . Furtherly, the thiourea groups acting as auxiliary coordination sites can alleviate the zinc deposition on the cathode surface and improve the redox reversibility and long cycle performance. Such a structural design is expected to be a promising strategy for developing high-performance organic cathode materials for multivalent ion batteries.

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“…When the electrode discharged to S 4 (1.35 V), this point is precisely the kink between the two discharge plateaus, which may be due to the variation of the insertion rate of Zn 2+ at different positions of the active material . At this time, a large number of long rod-shaped crystals appear on the surface of the cathode (Figure d S 4 ), and it is noteworthy that this phase volume is relatively large, which is different from the ZHS morphology at the S 1 point.…”

Section: Resultsmentioning

confidence: 92%

Exploration of Calcium-Doped Manganese Monoxide Cathode for High-Performance Aqueous Zinc-Ion Batteries

et al. 2022

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Manganese-based cathode materials for rechargeable zinc-ion batteries (ZIBs) have drawn much interest because of their reliable safety, abundant resources, and low cost. Manganese monoxide is not considered a suitable candidate cathode due to the lack of tunneling structure but exhibits a considerable specific capacity. Therefore, investigation of the energy storage mechanism of manganese monoxide is instructive for the development of ZIBs. Here, a one-step solid-phase reaction synthesizes manganese monoxide with calcium doping. The experimental characterization and ex situ X-ray diffraction (XRD) results demonstrate that Ca dopants significantly speed up the formation of Mn defects and prolong the cycling stability. Aqueous ZIBs with Ca-doped MnO cathode can deliver a high specific capacity of 315 mAh g–1 at 0.1 A g–1 and long-term cycling performance with a significant capacity retention rate (74%) at 1 A g–1 after 5000 cycles. This work may provide a new strategy for designing high-performance cathode materials for aqueous ZIBs via heteroatom doping and help to understand its energy storage mechanism.

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Optimizing engineering of rechargeable aqueous zinc ion batteries to enhance the zinc ions storage properties of cathode material

Cited by 26 publications

References 55 publications

Reversible K_0.54V₂O₅ Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Reversible K_0.54V₂O₅ Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Poly(quinone-thiourea) with Improved Auxiliary Coordination Zn²⁺ Insertion/Extraction Positive Performance for Aqueous Zinc Ion Battery Cathodes

Exploration of Calcium-Doped Manganese Monoxide Cathode for High-Performance Aqueous Zinc-Ion Batteries

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Optimizing engineering of rechargeable aqueous zinc ion batteries to enhance the zinc ions storage properties of cathode material

Cited by 26 publications

References 55 publications

Reversible K0.54V2O5 Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Reversible K0.54V2O5 Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Poly(quinone-thiourea) with Improved Auxiliary Coordination Zn2+ Insertion/Extraction Positive Performance for Aqueous Zinc Ion Battery Cathodes

Exploration of Calcium-Doped Manganese Monoxide Cathode for High-Performance Aqueous Zinc-Ion Batteries

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Product

Resources

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Reversible K_0.54V₂O₅ Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Reversible K_0.54V₂O₅ Nanorods for High-Performance Aqueous Zinc-Ion Batteries

Poly(quinone-thiourea) with Improved Auxiliary Coordination Zn²⁺ Insertion/Extraction Positive Performance for Aqueous Zinc Ion Battery Cathodes