Stability of Prussian Blue films on ITO electrodes: effect of different anions

Roig, A.; Navarro, José María Martínez; Tamarit, R.; Vicente, F.

doi:10.1016/0022-0728(93)87004-f

Cited by 48 publications

(45 citation statements)

References 27 publications

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“…These electrochemical reactions of PB films in acidic KCl aqueous solutions have been described in the literature by some simplified reactions which evidently imply the exchange of charged species in order to keep the films electroneutrality: Experimental results for these processes clearly proved that the electrical charge enclosed within the voltammetric peak associated to the PB PY process is about 60% of the electrical charge enclosed in the voltammetric peak corresponding to the PB ES process [33]. However, according to this structure and to equations (2) and (3) and that all the absorbance change at a characteristic wavelength is only due to the variation of the number of sites associated to this electroactive process (n):…”

Section: Fementioning

confidence: 95%

“…These s-PB films can be reversibly reduced to the colorless form (ES) and now, it is also possible to reversibly oxidize to the PY form since the electrical charge may be balanced by expelling potassium cations from within [12,25,26]. These electrochemical reactions of PB films in acidic KCl aqueous solutions have been described in the literature by some simplified reactions which evidently imply the exchange of charged species in order to keep the films electroneutrality: Experimental results for these processes clearly proved that the electrical charge enclosed within the voltammetric peak associated to the PB PY process is about 60% of the electrical charge enclosed in the voltammetric peak corresponding to the PB ES process [33].…”

Section: Fementioning

confidence: 99%

“… ions, and the collapse of the structure takes place [25,26]. It is also possible that chloride anions enter the PB film during the oxidation process to balance electrical charge and to form the structure, but this process seems to not take place to a great extent [27,28].…”

Section: Fementioning

confidence: 99%

“…There is also the possibility of i-PB films to be oxidized to the yellow form (PY, 33 / Fe Fe  ), but PY films generated this way proved very unstable and the films disappear after a few cycles since there are no free cations within the film to balance electrical charge during the oxidation process, and thus, electrical charge is compensated by expelling 3 …”

Section: Fementioning

confidence: 99%

“…Thus, electro-optical changes associated to this process cannot be studied on gold electrodes in KCl solutions. For this purpose the transparent ITO (indium-tin oxide) electrode is a better choice which proved both, good optical properties in the range of wavelengths studied and a very stable response at very anodic potentials in KCl solutions [25,33,36,37].…”

Section: Fementioning

confidence: 99%

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Identification of electroactive sites in Prussian Yellow films

Agrisuelas

Garcı́a-Jareño

Moreno-Guerrero

et al. 2013

Electrochimica Acta

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Abstract.Prussian Blue films were electrogenerated on the surface of the transparent ITO electrodes. The electrochemical oxidation to the Prussian Yellow form was investigated by means of in situ voltammetry and Vis-NIR spectroscopic techniques. Changes of the whole spectra between 400 and 950 nm were analyzed and three characteristic wavelengths were selected to in situ follow the electrochemical changes of the films.Voltammetric peaks and absorbance derivative curves at these three wavelengths were deconvoluted and were interpreted such as the overlapping of different electrochemical processes. The correlation between these overlapped processes has allowed proposing three different electrochemical processes for the interpretation of the whole electrochemical response. One of these processes corresponds to the oxidation of

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Section: Fementioning

confidence: 95%

Section: Fementioning

confidence: 99%

Section: Fementioning

confidence: 99%

Section: Fementioning

confidence: 99%

Section: Fementioning

confidence: 99%

See 3 more Smart Citations

Identification of electroactive sites in Prussian Yellow films

Agrisuelas

Garcı́a-Jareño

Moreno-Guerrero

et al. 2013

Electrochimica Acta

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Electrochemistry of Polycyanometalates

Scholz

Kahlert

2006

Encyclopedia of Electrochemistry

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The sections in this article are Introduction The Structure of Polycyanometalates The Electrochemistry of Polycyanometalates General Features Correlations between the Structures of PCMs and the Thermodynamics of their Electrochemical Reactions Special Features Metal Hexacyanoferrates Hexacyanocobaltates, Hexacyanomanganates, Hexacyanochromates, Hexacyanoruthenates Octacyanomolybdates, Octacyanotungstates Pentacyanonitrosyl Metalates Preparation of Electrodes Modified by Polycyanometalates and their Applications Preparation of Polycyanometalate Modified Electrodes Applications of PCM Modified Electrodes

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Prospects and Challenges of Practical Nonaqueous Potassium‐Ion Batteries

Wang,

Zhang,

et al. 2024

Adv Funct Materials

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Over the past decade, concerns over the sustainability of lithium‐ion batteries (LIBs) have arisen due to the scarcity of critical elements such as lithium (Li), nickel (Ni), and cobalt (Co), prompting the exploration of alternative and complementary electrochemical energy storage technologies. Due to the more abundant resources compared to contemporary LIBs and the potentially higher specific energy than the emerging sodium‐ion batteries (SIBs), potassium‐ion batteries (PIBs) have attracted intensive research interest as a promising alternative to existing technologies. Nevertheless, the development of practical PIBs remains in its infancy. In this perspective, the various electrode materials and electrolytes reported for PIBs from an application point of view and identifying the most promising ones with high practical interest are first concisely discussed. Then, the pack‐level specific energy, energy density, and cost analyses are presented for several PIBs chemistries, which are also compared with representative LIBs and SIBs to demonstrate the advantages of PIBs. After that, a succinct discussion is presented to evaluate the practicality of potassium metal batteries. Finally, the challenges associated with the commercialization of PIBs, providing future critical research fronts for the development of practical high‐performance PIBs are outlined.

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Stability of Prussian Blue films on ITO electrodes: effect of different anions

Cited by 48 publications

References 27 publications

Identification of electroactive sites in Prussian Yellow films

Identification of electroactive sites in Prussian Yellow films

Electrochemistry of Polycyanometalates

Prospects and Challenges of Practical Nonaqueous Potassium‐Ion Batteries

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