Towards high-performance aqueous zinc-ion battery via cesium ion intercalated vanadium oxide nanorods

Qi, Yae; Huang, Jianhang; Yan, Lei; Cao, Yongjie; Xu, Jingjun; Bin, Duan; Liao, Mochou; Xia, Yongyao

doi:10.1016/j.cej.2022.136349

Cited by 71 publications

(25 citation statements)

References 62 publications

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“…4a shows the recorded XRD patterns of selected VOMF electrodes from 5 K to 40 K. Comparing with the initial state, new peaks located at 17°, 18.8°, 19.5°, and 29.7° emerged after Zn 2+ intercalation at 0.2 V and gradually reduced during the thermoextraction procedures from 5 K to 40 K, corresponding well to the characteristics of Zn 4 (OTf) 4 (OH) 4 ·3H 2 O. 29,38–40 Notably, peaks matching the Zn 4 (OTf) 4 (OH) 4 ·3H 2 O clusters disappear with the increase in the temperature difference to 40 K. Moreover, the (001) plane of V 2 O 5 ·0.5H 2 O and (011) plane of V 2 O 5 shift to a low angle region with the insertion of charge carriers, which is mainly caused by the co-intercalation of Zn 2+ and H + in the V 2 O 5 · n H 2 O lattices. Such planes gradually shift to relatively high-angle regions with the deintercalation of ions from 5 K to 40 K, indicating that the microstructure of VOMF is highly stable for the intercalation/deintercalation of ions.…”

Section: Resultsmentioning

confidence: 78%

Microstructural engineering of hydrated vanadium pentoxide for boosted zinc ion thermoelectrochemical cells

et al. 2022

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 78%

Microstructural engineering of hydrated vanadium pentoxide for boosted zinc ion thermoelectrochemical cells

et al. 2022

J. Mater. Chem. A

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“…Qi et al. [ 321 ] inserted Cs + into V 2 O 5 n H 2 O, resulting in enhanced layered structures that form strong CS—O bonds with native oxygen atoms to enhance interlayer interactions and avoid structural collapse (Figure 21m ). The electrochemical performance of Cs 0.53 V 2 O 5 0.58H 2 O for storing Zn 2+ was studied by assembling it with zinc foil anode and 3m Zn(CF 3 SO 3 ) 2 electrolyte (Figure 21n ).…”

Section: Vanadatesmentioning

confidence: 99%

How About Vanadium‐Based Compounds as Cathode Materials for Aqueous Zinc Ion Batteries?

et al. 2023

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Aqueous zinc‐ion batteries (AZIBs) stand out among many monovalent/multivalent metal‐ion batteries as promising new energy storage devices because of their good safety, low cost, and environmental friendliness. Nevertheless, there are still many great challenges to exploring new‐type cathode materials that are suitable for Zn2+ intercalation. Vanadium‐based compounds with various structures, large layer spacing, and different oxidation states are considered suitable cathode candidates for AZIBs. Herein, the research advances in vanadium‐based compounds in recent years are systematically reviewed. The preparation methods, crystal structures, electrochemical performances, and energy storage mechanisms of vanadium‐based compounds (e.g., vanadium phosphates, vanadium oxides, vanadates, vanadium sulfides, and vanadium nitrides) are mainly introduced. Finally, the limitations and development prospects of vanadium‐based compounds are pointed out. Vanadium‐based compounds as cathode materials for AZIBs are hoped to flourish in the coming years and attract more and more researchers' attention.

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“…等 ) 的生成与分解 22,31,32 ，还存在不可逆 Zn 2 (V 2 O 7 )(OH)•nH 2 O副产物的生成 33,34 ； (3)嵌入 Zn 2+ 和主体材料之间强的静电作用力造成结构坍塌。这些将会导致循环过程中容量的严重损失，甚至失效，从而影响电池的循环寿命。一方面，正极材料结构设计包括层状化合物的预插层、缺陷工程、表面包覆及修饰 22,[34][35][36] ，对提升ZIBs电化学性能起到了非常积极的作用。另一方面，电解液优化调控也是解决上述问题的有效策略，对改善正极材料电化学性能起到了关键作用 [37][38][39][40] 其在低浓度时的应用 46 Mn(CF 3 SO 3 ) 2 ，预添加的Mn 2+ 在正极表面生成均匀的多孔MnO x 纳米片进而抑制Mn的溶解。对于钒基氧化物，金属离子插层钒氧化物在嵌锌过程中，插层离子可从层状结构中脱出，呈现置换/插层机理 [63][64][65] 。电解液中添加预插层金属离子根据同离子效应可在电解液与材料间形成溶解-平衡，阻止插层离子从层间脱出，维持结构稳定性 48,66,67 Zn//MnO 2 电池的工作电位提高至1.95 43,97…”

Section: 电解液调控策略提升水系锌离子电池正极材料电化学性能齐亚娥unclassified

Electrolyte Regulation Strategies for Improving the Electrochemical Performance of Aqueous Zinc-ion Battery Cathodes

Qi¹,

Xia²

2022

Acta Physico Chimica Sinica

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The ever-worsening world-wide energy crisis and environmental issues are encouraging the development of green and renewable energy. Thus, rechargeable batteries are being developed and employed for energy storage and conversion in various electronic equipment. When compared with metal lithium batteries, aqueous rechargeable batteries have gained significant attention due to their advantages of high safety, low cost, and environmental friendliness. Among the various known rechargeable batteries (Li + , Na + , K + , NH4 + , Mg 2+ , Ca 2+ , and Al 3+ ), aqueous zinc-ion batteries (ZIBs) are considered as promising energy storage devices because the zinc electrode exhibits high capacity (820 mAh•g -1 ) and low potential (-0.76 V vs. Standard hydrogen electrode (SHE)). To date, various ZIBs cathode materials with excellent performance have been developed, such as manganese-and vanadium-based oxides, Prussian blue and its analogues, and organic compounds. Unfortunately, some of these materials, especially manganeseand vanadium-based oxides, suffer from critical structural collapse, dissolution, and cathode/electrolyte interfacial side reactions, which lead to low Coulombic efficiency and poor cycle performance. The poor cycle performance is one of the main obstacles hindering the large-scale application of manganese-and vanadium-based oxides. Therefore, the structural design of cathodes and electrolyte regulation strategies have been extensively investigated to solve these problems and improve electrochemical performance. In comparison, electrolyte regulation is an important and effective strategy for improving the performance of ZIBs cathodes. It is well known that a strong interaction force exists between Zn 2+ and H2O, therefore, Zn 2+ can coordinate with six H2O molecules to form [Zn(H2O)6] 2+ in the dilute aqueous electrolyte, while forming numerous hydrogen bonds between the H2O molecules. The Zn 2+ -solvation structure and hydrogen bonds can be destructed and restructured by changing the anion, and using highly concentrated electrolyte and/or organic solvent, thereby decreasing the number of H2O molecules in the solvated structure and the activity of free water. Furthermore, additives can change the pH value of the aqueous electrolyte and build a dissolution equilibrium between the cathode and electrolyte. Hence, an appropriate electrolyte regulation strategy can broaden the electrochemical stability window of electrolytes, improve the working potential, suppress the occurrence of interfacial side reactions, and prevent the dissolution of the active materials, thereby improving the electrochemical performance of ZIBs. Herein, we review the possible electrolyte regulation strategies for enhancing the electrochemical performance of ZIBs cathodes and classify regulation strategy into two main categories: 1) Solute (including different zinc salts, additive, and water-in-salt) and 2) Solvent (composite of organic/inorganic hybrid electrolytes). We then discuss the advantages and challenges of each strategy, and final...

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Towards high-performance aqueous zinc-ion battery via cesium ion intercalated vanadium oxide nanorods

Cited by 71 publications

References 62 publications

Microstructural engineering of hydrated vanadium pentoxide for boosted zinc ion thermoelectrochemical cells

Microstructural engineering of hydrated vanadium pentoxide for boosted zinc ion thermoelectrochemical cells

How About Vanadium‐Based Compounds as Cathode Materials for Aqueous Zinc Ion Batteries?

Electrolyte Regulation Strategies for Improving the Electrochemical Performance of Aqueous Zinc-ion Battery Cathodes

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