Size-Complementary, High-Concentration Zincophilic Solute Molecules for Wide-Temperature-Range Aqueous Zinc Metal Batteries

Wang, Baojun; Zheng, Rong; Yang, Weifeng; Hou, Chengyi; Zhang, Qinghong; Li, Kerui; Li, Yaogang; Wang, Hongzhi

doi:10.1021/acsaem.3c01928

Cited by 1 publication

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“…Cyclic voltammetry (CV) is scanned in the no Faraday range, and the current density is plotted against the scan rate to calculate the electric double layer capacitance (Figure S5a,b). In Zn(OTf) 2 /H 2 O, the Zn electrode exhibits the EDLC of 7.87 μF cm –2 . The EDLC decreases to 2.09 μF cm –2 in Zn(OTf) 2 /H 2 O-Ace (Figure f).…”

Section: Resultsmentioning

confidence: 99%

In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li₃V₂(PO₄)₃ Cathode

Jia,

Wang,

Guo

et al. 2024

ACS Sustainable Chem. Eng.

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Aqueous batteries feature high safety, low cost, and environmental friendliness and are considered to be the next generation of large-scale energy storage systems with great potential. Especially an aqueous cell coupling zinc metal anode and polyanion cathode provides high voltage, which renders it a wider range of application prospects. However, the decomposition of polyanion compounds in a conventional aqueous zinc salt electrolyte limits the stability of the system. Herein we introduce a hybrid electrolyte developed by incorporating acetamide (Ace) and water as a cosolvent with Zn(OTf) 2 as the salt to stabilize polyanions. In the Zn(OTf) 2 /H 2 O-Ace aqueous electrolyte, Ace participates in the solvation structure of Zn 2+ to generate an in situ protective layer, wherein the decomposition of Li 3 V 2 (PO 4 ) 3 (LVP) into vanadium oxide is inhibited and the high voltage is preserved. A good cycling stability is thus realized for the Zn-LVP system. This work provides an effective strategy to enhance the stability of the polyanion compound and a universal approach for other promising aqueous batteries. KEYWORDS: aqueous zinc batteries, high voltage, Li 3 V 2 (PO 4 ) 3 , acetamide, protective layer

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Section: Resultsmentioning

confidence: 99%

In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li₃V₂(PO₄)₃ Cathode

Jia,

Wang,

Guo

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

Size-Complementary, High-Concentration Zincophilic Solute Molecules for Wide-Temperature-Range Aqueous Zinc Metal Batteries

Cited by 1 publication

References 46 publications

In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li₃V₂(PO₄)₃ Cathode

In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li₃V₂(PO₄)₃ Cathode

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Size-Complementary, High-Concentration Zincophilic Solute Molecules for Wide-Temperature-Range Aqueous Zinc Metal Batteries

Cited by 1 publication

References 46 publications

In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li3V2(PO4)3 Cathode

In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li3V2(PO4)3 Cathode

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In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li₃V₂(PO₄)₃ Cathode

In Situ Generation of Protective Layer in Aqueous Zinc Batteries to Stabilize the Voltage of Li₃V₂(PO₄)₃ Cathode