Synchronously promoting the electron and ion transport in high-loading Mn2.5V10O24∙5.9H2O cathodes for practical aqueous zinc-ion batteries

Yang, Lin; Zhu, Ying-Jie; Zeng, Fanlin; Yu, Han-Ping; Dong, Li-Ying; Tao, Jingchao; He, Guo; Li, Heng

doi:10.1016/j.ensm.2023.103162

Cited by 5 publications

(2 citation statements)

References 62 publications

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“…The linear relationship between Z′ and ω –1/2 is shown in Figure S11, showing the σ value of 50.42 and 9.19 ohm s –1/2 for the V 2 O 3 @C and N–V 2 O 3 @N–C electrodes, respectively. These values indicate the enhanced ion diffusion after ammonia treatment . These results show that the N–V 2 O 3 @N–C electrode exhibits fast charge transfer and ion diffusion kinetics, consistent with its excellent battery performance.…”

Section: Resultssupporting

confidence: 63%

N-Doping-Induced Amorphization for Achieving Ultrastable Aqueous Zinc-Ion Batteries

Li,

Liu,

et al. 2024

ACS Appl. Mater. Interfaces

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Vanadium-based oxides, known for their high capacity and low cost, have garnered significant attention as promising cathode candidates in aqueous zinc-ion batteries. Nonetheless, their poor rate performance and limited durability in aqueous electrolytes present a challenge to the realistic implementation of vanadium-based aqueous zinc-ion batteries. Here, we synthesized nitrogen-doped V2O3@C (N–V2O3@N–C) via ammonia treatment of V2O3@C derived from vanadium-based metal–organic framework (V-MOF), aiming to achieve outstanding rate and cycling performance. The N–V2O3@N–C electrode exhibits notable in situ self-transformation into an amorphous state. Density functional theory calculations reveal that the distorted N–V2O3 structure and uneven charge distribution result in the creation of an amorphous state. As expected, Zn/N–V2O3@N–C aqueous zinc-ion batteries can achieve remarkable specific capacity (349.0 mAh g–1 at 0.1 A g–1), along with impressive rate performance, showcasing a capacity of 253.5 mAh g–1 at 5 A g–1 and exceptional durability at 5 A g–1 (96.4% after 1350 cycles). The employed induced amorphization approach offers novel perspectives for designing high-performance cathodes that exhibit both sturdy structures and extended cycling lifespans.

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Section: Resultssupporting

confidence: 63%

N-Doping-Induced Amorphization for Achieving Ultrastable Aqueous Zinc-Ion Batteries

Li,

Liu,

et al. 2024

ACS Appl. Mater. Interfaces

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“…Notably, Prussian blue and its analogues (PBAs) have garnered significant attention owing to their open-framework structure, ease of synthesis, safety and environmental compatibility, which makes them prospective cathode materials for future AZIBs. 6…”

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confidence: 99%

In situ electrochemical Mn vacancies in CoMnHCF for a high level of zinc storage

Wang,

Zhou,

et al. 2024

Chem. Commun.

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Pomegranate‐Inspired Cathodes Mitigate the Mismatch Between Carrier Transport and High Loading for Aqueous Zinc‐Ion Batteries

Bie,

Jiao,

Cai

et al. 2024

Advanced Energy Materials

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The development of high‐energy‐density aqueous zinc‐ion batteries requires the preparation of cathodes with a thick layer of active material. However, the insulating nature and dissolution of vanadium‐based oxides lead to low areal capacity (0.1,1 mA h cm−2) during the charge/discharge cycle. Herein, V2O5 nanospheres are generated by anchoring onto the laser‐induced graphene (LIG) conductive network through defect‐induced adsorption, resulting in the formation of pomegranate‐like V2O5@LIG composites. The unique and abundant defect structure in the honeycomb LIG can trigger the formation of uniform V2O5 nanospheres with high specific surface area and interact electronically with V2O5 to enhance the electrical conductivity of the cathode materials up to four orders of magnitude. In contrast to conventional carbon materials that can cause steric hindrance for ion transport, the micropores within LIG shorten the ion transport path through the cathode. Concurrently, the pomegranate‐like encapsulated structure effectively prevents cathode material corrosion. Under a high‐loading mass of 17.1 mg cm−2, the full cell is stably cycled for 200 cycles, possessing a 92.5% capacity retention, and achieving a high areal capacity of 6.05 mA h cm−2.

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Synchronously promoting the electron and ion transport in high-loading Mn2.5V10O24∙5.9H2O cathodes for practical aqueous zinc-ion batteries

Cited by 5 publications

References 62 publications

N-Doping-Induced Amorphization for Achieving Ultrastable Aqueous Zinc-Ion Batteries

N-Doping-Induced Amorphization for Achieving Ultrastable Aqueous Zinc-Ion Batteries

In situ electrochemical Mn vacancies in CoMnHCF for a high level of zinc storage

Pomegranate‐Inspired Cathodes Mitigate the Mismatch Between Carrier Transport and High Loading for Aqueous Zinc‐Ion Batteries

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