Potassium-ion aqueous supercapattery composed by solar carbon and nickel-zinc prussian blue analogue

Lobato-Peralta, Diego Ramón; Vázquez-Samperio, Juvencio; Pérez, O. Sánchez; Acevedo–Peña, Próspero; Reguera, E.; Cuentas-Gallegos, Ana Karina

doi:10.1016/j.est.2020.101667

Cited by 19 publications

(9 citation statements)

References 81 publications

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“…Then, this material can be easily dissolved in aqueous solutions at temperatures above room temperature by a Jahn Teller effect of Mn 3+, 12 considering A x MnHCF optimal as a template in the formation of hollow structures. Although incorporating Zn in CoHCF hollow structures has not been reported in the specialized literature, our primary motivation was driven by the fast kinetics promoted by Zn in PBAs 16,23 . The main steps for synthesizing the CoZnHCF hollow structures are schematized in Figure 1A.…”

Section: Resultsmentioning

confidence: 99%

“…For example, it has been recently shown that incorporating nickel into zinc hexacyanoferrate improved the material's chemical stability and the redox processes' kinetics. The results showed that the mixture of external metals favors the electrochemical footprint compared to monometallic PBA, increasing the storage capacity and more stability at different currents and scanning rates 23 . Recent reports have also shown that ZnHCF electrochemical behavior might be improved using Mn 2+, 24 VO 2+, 25 and Co 2+.…”

Section: Introductionmentioning

confidence: 93%

“…Although incorporating Zn in CoHCF hollow structures has not been reported in the specialized literature, our primary motivation was driven by the fast kinetics promoted by Zn in PBAs. 16,23 The main steps for synthesizing the CoZnHCF hollow structures are schematized in Figure 1A. Once the cubes of MnHCF are formed, our series of materials are grown over their surface to adopt the cubic shape, creating a layer covering the material by co-precipitation in the same way the template material was synthesized.…”

Section: Morphological and Structural Characterizations Coznhcf Seriesmentioning

confidence: 99%

“…The results showed that the mixture of external metals favors the electrochemical footprint compared to monometallic PBA, increasing the storage capacity and more stability at different currents and scanning rates. 23 Recent reports have also shown that ZnHCF electrochemical behavior might be improved using Mn 2+,24 VO 2+, 25 and Co 2+.26 Cobalt is an attractive transition metal to pair with Zn 2+ in ZnHCF and forms CoZnHCF. Unlike Zn 2+ , Co 2+ is a redox-active transition metal that will increase the energy storage capacity of the coordination polymer.…”

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confidence: 99%

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Mixed cobalt–zinc hexacyanoferrate hollow micro‐cubes for a high‐voltage hybrid supercapacitor

Villalva‐Mejorada

Acevedo–Peña

Leyva‐Porras

et al. 2022

Intl J of Energy Research

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Summary The behavior of Prussian Blue Analogs (PBAs) is determined by the external transition metal coordinated to the N‐end of the hexacyanoferrate block. Combining transition metal ions allows obtaining a material with improved performance for energy‐related applications. A mixed PBA was formed with cobalt hexacyanoferrate (CoHCF) and ZnHCF. The former has two redox processes and easy modulation of its morphology, while the latter exhibits fast kinetics during the charge transfer. The morphology of the solids was controlled by composition, shaping hollow structures at a high concentration of Co2+ in the PBA. Spectroscopic characterization displayed the change in the charge density at the N‐end of the cyanide bridges caused by the polarizing power of Zn2+. XRD showed the formation of more than one crystalline phase. The presence of Co2+ provided larger specific capacity and stability during cycling, while Zn2+ afforded a higher potential and improved rate capability to the solid. The material with the best electrochemical behavior was employed to assemble a hybrid supercapacitor, reaching specific energy of 30 Wh kg−1 at a power of 450 W kg−1 and 7 Wh kg−1 at 5.5 kW kg−1. Additionally, the device retained 85% of its initial capacitance after 5000 galvanostatic charge–discharge cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Section: Morphological and Structural Characterizations Coznhcf Seriesmentioning

confidence: 99%

mentioning

confidence: 99%

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Mixed cobalt–zinc hexacyanoferrate hollow micro‐cubes for a high‐voltage hybrid supercapacitor

Villalva‐Mejorada

Acevedo–Peña

Leyva‐Porras

et al. 2022

Intl J of Energy Research

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“…Diego et al prepared hybrid hexacyano high-iron NiÀ Zn by simple chemical precipitation, exploiting the synergy between zinc and nickel atoms, providing high reversibility, high potential and stability (Figure 18d). [146] The assembled PIHCs maintain an initial capacitance of 85 % at 2.5 A g À 1 after 5000 cycles), with a CE close to 100 % (Figure 18e). The practical application potential of Prussian blue and its analogues in the production of PIHCs is further proved.…”

Section: Prussian Blue and Its Analoguesmentioning

confidence: 94%

Advanced Electrode Materials for Potassium‐Ion Hybrid Capacitors

Chen

Shen

Xiong

et al. 2023

Batteries & Supercaps

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Potassium‐ion hybrid capacitors (PIHCs) overcome the limitations of potassium‐ion batteries (PIBs) and supercapacitors (SCs) and integrate the advantages of both, including high energy density, high power density, low cost, long cycle life, and stable electrochemical performance. However, the development of PIHCs is hindered by thermodynamic instability and kinetic hysteresis. Additionally, the dynamic mismatch between anode and cathode materials poses an urgent challenge. To this end, many research works related to material development have been dedicated to overcoming the drawbacks. In this review, the energy storage mechanism of PIHCs is briefly introduced. Moreover, the research progress and achievements of anode and cathode materials in recent years are reviewed, including carbon‐based materials, MXenes, transition metal materials, Prussian blue and its analogues. Finally, the challenges and prospects of PIHCs are proposed, together with guiding significant research directions in the future.

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