One-step hydrothermal growth and electrochromic properties of highly stable Prussian green film and device

Li, Fēi; Ma, Dongyun; Qian, Jianghua; Yang, Bing; Xu, Zhenhe; Li, Dan; Wu, Zhixiong; Wang, Jinmin

doi:10.1016/j.solmat.2018.12.024

Cited by 33 publications

(5 citation statements)

References 53 publications

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“…When Mn 4+ is electrochemically reduced to Mn 3+ , the color changes to light yellow due to the removal of the absorbing species, which results in reversible color changes of the MnO 2 film between brown and light yellow. PB is a well-known mixed-valence compound (KFe III [Fe II (CN) 6 ), and the redox couple in the CV curve (blue line) corresponds to the reduction/oxidation of centrally located Fe 3+ /Fe 2+ ions, accompanying the intercalation/de-intercalation of K + ions. , For the MnO 2 /PB nanocomposite film, the CV curve (black line) displays two similar redox peaks in the same potential range. The difference is that the MnO 2 /PB film offers wider-range redox peaks, where the redox potentials of PB and MnO 2 are both included.…”

Section: Resultsmentioning

confidence: 99%

“…According to the previous literature, PB films grown by electrodeposition or the hydrothermal method often show compact structures. , As a coordination compound, PB shows poor film adhesion to the conductive substrate compared with the metal oxide films, resulting in a poor switching stability. In comparison, MnO 2 films often reported porous nanostructures with large surface areas. − Hence, MnO 2 films can serve as host frameworks for growing nanostructured PB, offering good adhesion to the substrate and, hence, improving the cycling stability of the composite EC film.…”

Section: Introductionmentioning

confidence: 99%

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Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO₂/PB Films

Cao

et al. 2021

ACS Appl. Mater. Interfaces

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Inorganic materials have been extensively studied for visible electrochromism in the past few decades. However, the single inorganic electrochromic (EC) material commonly exhibits a single color change, leading to a narrow spectrum of modulation, which offsets or limits the maximally energy-saving ability. Here, we present a wide-spectrum modulated EC device designed by combining the complementary EC nanocomposite of manganese dioxide (MnO 2 ) and Prussian blue (PB) for enhanced energy savings. Porous MnO 2 nanostructures serve as host frameworks for the templated growth of PB, resulting in MnO 2 /PB nanocomposites. The complementary optical modulation ranges of MnO 2 and PB enable a widen-spectrum modulation across the solar region with the development of the MnO 2 /PB nanocomposite. The colored MnO 2 /PB device exhibited an optical modulation of 32.1% in the wide solar spectrum range of 320−1100 nm and blocked 72.0% of the solar irradiance. Furthermore, fast switching responses (2.7 s for coloration and 2.1 s for bleaching) and a high coloration efficiency (83.1 cm 2 •C −1 ) of the MnO 2 /PB EC device are also achieved. The high EC performance of the MnO 2 /PB nanocomposite device provides a new strategy for the design of highperformance energy-saving EC smart windows.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO₂/PB Films

Cao

et al. 2021

ACS Appl. Mater. Interfaces

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“…Also, no matter what state it is, it takes less time to return to red or blue states (3.05 s from green to red, 7.23 s from yellow to red, 9.08 s from green to blue, and 9.41 s from yellow to blue). However, it generally costs half a minute for RGBY film to turn to green and yellow as the electrochemical oxidation reaction of FeHCF in RGBY film takes more time for fully completing. ,− On average, the response time of RGBY film between each state is 16.01 s.…”

Section: Resultsmentioning

confidence: 99%

Achieved RGBY Four Colors Changeable Electrochromic Pixel by Coelectrodeposition of Iron Hexacyanoferrate and Molybdate Hexacyanoferrate

Zou

Wang

Yang

et al. 2020

ACS Appl. Mater. Interfaces

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Although multicolor electrochromic materials and devices have been studied by many researchers, there is still none an inorganic single-layer film that has red, blue, and green three typical color states, while red, green, and blue (RGB) are indispensably for multicolor display. Iron hexacyanoferrate (FeHCF) is a kind of well-studied inorganic electrochromic material with relatively colorful properties and a great family of analogues. In this Research Article, the RGBY film with red, green, blue and yellow four typical color states are obtained successfully by coelectrodeposition of FeHCF and molybdate hexacyanoferrate (MoOHCF). This film contains the electrochromic properties of both components. Moreover, benefiting from its high A+ (alkali cation ions that can insert/extract into/from the framework, such as Li+ and K+) content, the redox process of RGBY film can be fully completed to achieve rich color variation. The absorptivity adjustment range of RGBY film at 730 and 440 nm are 0.81 and 0.43, respectively. The response time of RGBY films varies from 3 to 30 s between states and maintains its optical properties without significant decay during 1000 cycles. Finally, a pixelated electrode and a facile electrochromic device based on RGBY film have been developed to exhibit its high application potential in nonemission display field.

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“…In another study reported by Li et al , PG films were prepared by a one-step hydrothermal method with a crystal structure equivalent to PB. 84 The color was related to the ratio of Fe 3+ /Fe 2+ , demonstrating the ability for reversible changes between green, blue, and colorless states (Fig. 5a).…”

Section: Strategies Of Multicolormentioning

confidence: 96%

Multicolored inorganic electrochromic materials: status, challenge, and prospects

Jiang,

Ge,

Bian

et al. 2023

Nanoscale

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One-step hydrothermal growth and electrochromic properties of highly stable Prussian green film and device

Cited by 33 publications

References 53 publications

Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO₂/PB Films

Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO₂/PB Films

Achieved RGBY Four Colors Changeable Electrochromic Pixel by Coelectrodeposition of Iron Hexacyanoferrate and Molybdate Hexacyanoferrate

Multicolored inorganic electrochromic materials: status, challenge, and prospects

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One-step hydrothermal growth and electrochromic properties of highly stable Prussian green film and device

Cited by 33 publications

References 53 publications

Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO2/PB Films

Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO2/PB Films

Achieved RGBY Four Colors Changeable Electrochromic Pixel by Coelectrodeposition of Iron Hexacyanoferrate and Molybdate Hexacyanoferrate

Multicolored inorganic electrochromic materials: status, challenge, and prospects

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Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO₂/PB Films

Wide-Spectrum Modulated Electrochromic Smart Windows Based on MnO₂/PB Films