Designing Prussian blue coated iron electrode with exceptional cyclic and rate performance on potassium-ion storage

Liu, Chunting; Ma, Ji

doi:10.1016/j.jallcom.2023.169127

Cited by 2 publications

(1 citation statement)

References 57 publications

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“…With regard to the choice of electrodes, though inorganic materials like oxides have been tested for aqueous K-ion batteries, their high cost, and limited reserves are still considered as limiting factors. , In this regard, just as organic materials have created a niche in nonaqueous electrolyte-based energy storage devices, they can be considered as viable candidates in aqueous chemistries also. , Among the different classes of organic materials, carbonyl compounds offer viable advantages due to the ease of tuning their properties by tweaking their molecular structure and introducing functionalities . It is in general observed that the dissolution of the organic materials is a very common issue and that has been overcome by polymerization.…”

Section: Introductionmentioning

confidence: 99%

Polyimide-Based Aqueous Potassium Energy Storage Systems Using Concentrated WiSE Electrolyte

Vardhini,

Dilip,

Kumar

et al. 2024

ACS Appl. Mater. Interfaces

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Aqueous batteries are considered as promising alternative power sources due to their eco-friendly, cost-effective, and nonflammable attributes. Employing organic-based electrode materials offers further advantages toward building greener and sustainable systems, owing to their tunability and environmental friendliness. In order to enhance the energy and power densities, superconcentrated aqueous electrolytes, such as water-in-salt electrolytes (WiSE), have renewed the interest in aqueous batteries due to their enhanced stability and much wider electrochemical stability window (>1.23 V) compared with the traditional aqueous electrolytes. Here, we present a perylene diimide-based electrode material (PDI-Urea) as an appealing anode for aqueous potassium energy storage systems and investigate their electrochemical performance in three WiSE electrolytes, namely, 30 M potassium acetate, 40 M potassium formate and 30 M potassium bis(fluorosulfonyl)imide (KFSI). To explore the potential of PDI-Urea for potassium-based electrochemical energy systems, we fabricated full cell devices such as aqueous potassium dual-ion battery (APDIB) and aqueous K-ion battery (AKIB) and studied their electrochemical properties with 30 M KFSI electrolyte. The full cell K-ion battery, using a PBA cathode, exhibited excellent electrochemical performance with good rate capability and impressive capacity retention of 91% upon 1000 cycles. Further, the reaction mechanism of the electrodes is systematically analyzed using ex-situ studies.

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