Electrochromic properties of hydrothermally grown Prussian blue film and device

Qian, Jianghua; Ma, Dongyun; Xu, Zhenhe; Li, Dan; Wang, Jinmin

doi:10.1016/j.solmat.2017.08.016

Cited by 79 publications

(43 citation statements)

References 39 publications

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“…Synthesis of PB-PPy composite films was performed by the one-step method based on redox reaction between an equimolar mixture of iron (III) and ferricyanide salts (an oxidizer) and pyrrole (Py) taken in excess (a reducing agent) in their mixed dilute aqueous solution by the use of a nitrate background electrolyte 0.1 M HNO 3 + 0.1 M KNO 3 (to prevent the hydrolysis of iron salts and create the excess of potassium ions in solution for PB synthesis). As it was shown in our previous work [13], optimal concentrations of reagents in reaction mixture for deposition of composites with the lowest degradation degree at potentials of PB/PW redox transfer are 0.1 mM [Fe 3+ + Fe(CN) 6 3− ] + 0.5 mM Ру (PB-PPy 1:1:5 sample) and 0.1 mM [Fe 3+ + Fe(CN) 6 3− ] + 1.0 mM Ру (PB-PPy 1:1:10 sample). These component ratios were used also in actual study.…”

Section: Synthesis Of Pb-ppy Compositesmentioning

confidence: 70%

“…Prussian blue (PB), Fe 4 [Fe(CN) 6 ] 3 , deposited in the form of a thin film on the surface of the inert electrode is known due to its redox transformations to both partially (Prussian green or Berlin green, BG) or fully oxidized (Prussian yellow) and reduced (Prussian white, PW) forms in dependence on the electrode potential [1,2]. Redox transformations in this electroactive material are accompanied with its colour changes (by reduction to PW, the blue film of PB becomes colourless; by oxidation to BG, its colour changes to green [3]) that make PB interesting for design of electrochromic devices [4][5][6]. PW and BG are also known for their electrocatalytic activity toward hydrogen peroxide [5,7] and sulphite anions [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical and electrocatalytic stability of Prussian blue/Berlin green redox transformation in Prussian blue-polypyrrole composite films

Talagaeva

Kleinikova

Gor’kov

et al. 2020

J Solid State Electrochem

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Redox transformation of Prussian blue to Berlin green (PB/BG) in Prussian blue-polypyrrole (PB-PPy) composites synthesized via original one-step method has been studied. It was shown that the nature of anion and composition of background electrolyte play an important role for both the stability and the shape of electrochemical response of composite film during redox transfer of Prussian blue to Berlin green. Nitric acid, phosphoric acid, malic acid and citric acid 0.05 N (eq/L) solutions and the same acids partially neutralized with 0.01 N KOH were used as electrolyte to study the role of potassium ions presence in solution. The most stable electrochemical response of PB/BG redox transfer was obtained for the nitrate anions containing solutions in the presence of potassium ions. Nevertheless, the stability of the electrochemical transformation PB/BG in composite films in other media is enough to detect the sulphite ions content in wine samples via electrocatalytic reaction at the potentials of PB/BG redox transformation.

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Section: Synthesis Of Pb-ppy Compositesmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Electrochemical and electrocatalytic stability of Prussian blue/Berlin green redox transformation in Prussian blue-polypyrrole composite films

Talagaeva

Kleinikova

Gor’kov

et al. 2020

J Solid State Electrochem

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“…After deposition of the PB layer, quasicubic PB particles with diameters of ≈450 nm appear on top of the FTO layer (Figure c). The ≈250 nm‐thick PB layer attaches tightly onto the FTO layer (Figure d and Figure S2, Supporting Information), very favorable for the application as the EC layer due to the smooth interlayer charge transfer during bleaching/coloring reactions . Figure e further shows the X‐ray diffractometer (XRD) patterns of the bare and PB‐coated FTO glasses.…”

Section: Resultsmentioning

confidence: 98%

“…PB layers were coated on FTO glasses (≈10 Ω □, glass coated by F‐doped SnO 2 ) by a hydrothermal method, as reported previously . All reagents were analytical grade and used without further purification.…”

Section: Methodsmentioning

confidence: 99%

A Long‐Life Battery‐Type Electrochromic Window with Remarkable Energy Storage Ability

et al. 2020

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Electrochromic (EC) windows with controllable transmittances according to ambient temperature and solar irradiation strength are highly desired for energy‐efficient buildings. However, traditional EC windows operate via consuming electrical energy to trigger the chromogenic reactions, with negligible energy storage ability. Herein, a facile battery‐type Prussian blue (PB, Fe4III[FeII(CN)6]3)/Zn EC window with excellent EC properties (transmittance modulation = 84.9% at 633 nm), remarkable energy storage ability (average output voltage = 1.24 V and areal capacity = 78.9 mAh m−2), fast switching time (tbleaching = 4.1 s and tcoloring = 4.6 s), as well as an ultralong cycling lifetime (7000 cycles with 60.7% capacity retention and 92.7% transmittance modulation retention) is reported, thanks to the rational electrode and electrolyte design. As an EC window, this device can effectively promote energy efficiency and occupational comfort of buildings by regulating visible light transmittance. As a battery, this device can work as backup power or a component of smart grids, making the buildings more sustainable and functional. The design concept of this bifunctional device is helpful to further the development of next‐generation EC windows.

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“…For instance, in a typical process, initially from the solution a precipitate (e.g., Berlin white, Fe 2 II [Fe II (CN) 6 ]) is obtained, then it is treated with an oxidizing agent like H 2 O 2 to get the final product. Apart from the precipitation technique, there are many other potential techniques to prepare high‐quality Prussian blue materials, such as electrochemical deposition route, hydrothermal reaction, etc . The major challenge for Prussian blue analogue material for battery application is the controlling of the crystal water content.…”

Section: Cathode Materialsmentioning

confidence: 99%

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

Rajagopalan

Tang

et al. 2020

Adv Funct Materials

702

401

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Demand for energy in day to day life is increasing exponentially. However, existing energy storage technologies like lithium ion batteries cannot stand alone to fulfill future needs. In this regard, potassium ion batteries (KIBs) that utilize K ions in their charge storage mechanism have attracted considerable attention due to their unique properties and are therefore established as one of the future battery systems of interest among the scientific community. Nevertheless, the development and identification of appropriate electrode materials is very essential for practical applications. This review features the current development in KIBs electrode and electrolyte materials, the present challenges facing this technology (in the commercial aspect), and future aspects to develop fully functional KIBs. The potassium storage mechanisms, evolution of the KIBs, and the advantages and disadvantages of each category of materials are included. Additionally, various approaches to enhance the electrochemical performances of KIBs are also discussed. This review is not only an amalgamation of different viewpoints in literature, but also contains concise perspectives and strategies. Moreover, the potential emergence of a novel class of K‐based dual ion batteries is also analyzed for the first time.

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Electrochromic properties of hydrothermally grown Prussian blue film and device

Cited by 79 publications

References 39 publications

Electrochemical and electrocatalytic stability of Prussian blue/Berlin green redox transformation in Prussian blue-polypyrrole composite films

Electrochemical and electrocatalytic stability of Prussian blue/Berlin green redox transformation in Prussian blue-polypyrrole composite films

A Long‐Life Battery‐Type Electrochromic Window with Remarkable Energy Storage Ability

Advancements and Challenges in Potassium Ion Batteries: A Comprehensive Review

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