Aluminium pre-intercalated orthorhombic V2O5 as high-performance cathode material for aqueous zinc-ion batteries

Pang, Qiang; He, Wei; Yu, Xiangyu; Yang, Siyu; Zhao, Hainan; Fu, Yao; Xing, Mingming; Tian, Ying; Luo, Xixian; Wei, Yingjin

doi:10.1016/j.apsusc.2020.148043

Cited by 83 publications

(37 citation statements)

References 37 publications

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“…Two strong signal peaks of Zn 2p at 1045.0 eV and 1021.9 eV are present in the discharged electrodes for the two different batteries, which prove the intercalation of Zn 2+ in two electrodes. [39] In the following charging process, the Zn signal intensity of the electrode in the hybrid electrolyte is significantly decreased, confirming the extraction of the most Zn 2+ from the LiV3O8 host. It is worth noting that a strong Zn signal is detected on the charged electrode in 3M Zn(OTf)2 electrolyte, indicating the poor reversibility of Zn 2+ intercalation/extraction.…”

Section: Resultsmentioning

confidence: 84%

High-Capacity and Long-Lifespan Aqueous LiV3O8/Zn Battery Using Zn/Li Hybrid Electrolyte

Pang

Zhang

et al. 2021

Nanomaterials

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Aqueous zinc-ion batteries (AZIBs) are promising candidates for large-scale energy storage because of their low cost and high safety. However, their practical applications are impeded by low energy density and short service life. Here, an aqueous Zn2+/Li+ hybrid-ion battery is fabricated using the LiV3O8 nanorods as the cathode, metallic Zn as the anode, and 3 M Zn(OTf)2 + 0.5 M LiOTf aqueous solution as the electrolyte. Compared with the batteries using pure 3 M Zn(OTf)2 electrolyte, the cycle performance of the hybrid-ion battery is significantly improved. After 4000 cycles at 5 A g1, the remaining capacity is 163.9 mA h g−1 with impressive capacity retention of 87.0%. Ex-situ XRD, ex-situ XPS, and SEM tests demonstrate that the hybrid electrolyte can inhibit the formation of the irreversible Zn3(OH)2V2O7·2H2O by-product and restrict Zn dendrite growth during cycling, thereby improving the cycle performance of the batteries.

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Section: Resultsmentioning

confidence: 84%

High-Capacity and Long-Lifespan Aqueous LiV3O8/Zn Battery Using Zn/Li Hybrid Electrolyte

Pang

Zhang

et al. 2021

Nanomaterials

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“…The graphene-wrapped H 11 Al 2 V 6 O 23.2 nanobelt (HA-VOH@G) composites reported by Zhang et al delivered a respectable rate performance. Pang et al presented a block morphology aluminum preintercalated orthorhombic V 2 O 5 (Al 0.2 V 2 O 5 ) cathode that was composed of small rod-like primary particles, delivering a high capacity of 448.4 mAh g –1 at 0.1A g –1 . Zheng et al introduced microsphere structures with Al-ion preintercalated hydrated vanadium oxides (Al-VOH), leading to a specific capacity of 380 mAh g –1 at 50 mA g –1 and excellent long-term cycling stability.…”

Section: Introductionmentioning

confidence: 99%

Tremella-like Hydrated Vanadium Oxide Cathode with an Architectural Design Strategy toward Ultralong Lifespan Aqueous Zinc-Ion Batteries

Guan

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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Rechargeable aqueous zinc-ion batteries (ZIBs) are promising systems for energy storage due to their operational safety, low cost, and environmental friendliness. However, the development of suitable cathode materials is plagued by the sluggish dynamics of Zn2+ with strong electrostatic interaction. Herein, an Al3+-doped tremella-like layered Al0.15V2O5·1.01H2O (A-VOH) cathode material with a large pore diameter and high specific surface area is demonstrated to greatly boost electrochemical performance as ZIB cathodes. Resultant ZIBs with a 3 M Zn(CF3SO3)2 electrolyte deliver a high specific discharge capacity of 510.5 mAh g–1 (0.05 A g–1), and an excellent energy storage performance is well maintained with a specific capacity of 144 mAh g–1 (10 A g–1) even after ultralong 10,000 cycles. The decent electrochemical performance roots in the novel tremella-like structure and the interlayer of Al3+ ions and water molecules, which could improve the electrochemical reaction kinetics and structural long cycle stability. Furthermore, the assembled coin-type cells could power a light-emitting diode (LED) lamp for 2 days. We believed that the design philosophy of unique morphology with abundant active sites for Zn2+ storage will boost the development of competitive cathodes for high-performance aqueous batteries.

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“…Additionally, the diffusion coefficient of Zn 2+ (D Zn ) in the VO 2 -SDBS@rGO electrode was also identified by the GITT (Figure 4e,f). 42,43 The calculated D Zn values at the process of discharge and charge correspond to the processes of Zn 2+ intercalation and deintercalation, respectively. The results of GITT show that with the progress of the Zn 2+ intercalation and deintercalation process, the diffusion of the zinc ions becomes slower.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

A Composite Material with Internal Hydrophilicity and External Stability as the Cathode of Aqueous Zinc-Ion Batteries Exhibiting Excellent Rate Performance and Energy Density at High Power Density

Zou

Guo

Wang

et al. 2021

ACS Appl. Energy Mater.

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Owing to their outstanding safety and low cost, aqueous zinc-ion batteries (ZIBs) are very suitable for large-scale energy storage in the future. However, slow transport dynamics and an unstable host structure are the main barriers that obstruct the evolution of superior cathode materials for high-performance ZIBs. We used glycerol and sodium dodecyl benzene sulfonate (SDBS) as reducing agents and surfactants to produce sea urchin-like VO2 and then coated reduced graphene oxide (rGO) to construct composite materials VO2-SDBS@rGO. The addition of glycerol can not only cause the structural transformation of raw material V2O5 while being reduced, but also provide a large number of hydrophilic groups. At the same time, SDBS leads to the material directional polymerization and produces abundant point defects, which can provide plentiful active sites for ion diffusion. In addition, the coating of rGO further stabilizes the structure of the material and improves the conductivity of the material. When VO2-SDBS@rGO is used as the cathode for aqueous ZIBs, it shows an extraordinary electrochemical performance with a reversible capacity of 437.8 mA h g–1 at 0.5 A g–1 and exceptional rate capability (402.8 mA h g–1 at 10 A g–1 and 333.8 mAh g–1 at 32 A g–1). After 500 cycles at a current density of 8 A g–1, the composite VO2-SDBS@rGO can still provide a reversible capacity retention rate of 79.8%. Furthermore, ZIBs using VO2-SDBS@rGO as the cathode can achieve favorable energy density (307.3 Wh kg–1) at high power density (7629 W kg–1).

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Aluminium pre-intercalated orthorhombic V2O5 as high-performance cathode material for aqueous zinc-ion batteries

Cited by 83 publications

References 37 publications

High-Capacity and Long-Lifespan Aqueous LiV3O8/Zn Battery Using Zn/Li Hybrid Electrolyte

High-Capacity and Long-Lifespan Aqueous LiV3O8/Zn Battery Using Zn/Li Hybrid Electrolyte

Tremella-like Hydrated Vanadium Oxide Cathode with an Architectural Design Strategy toward Ultralong Lifespan Aqueous Zinc-Ion Batteries

A Composite Material with Internal Hydrophilicity and External Stability as the Cathode of Aqueous Zinc-Ion Batteries Exhibiting Excellent Rate Performance and Energy Density at High Power Density

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