Novel High-Performance and Low-Cost Electrochromic Prussian White Film

Yang, Yixin; Peng, Yuan; Jian, Zelang; Qi, Yanyuan; Yang, Xiong; Chen, Wen

doi:10.1021/acsami.1c22050

Cited by 16 publications

(12 citation statements)

References 29 publications

(42 reference statements)

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“…The high CE value indicates that the film obtains large optical modulation with less energy consumption, which can prospectively induce long‐term cycling stability. [ 33,34 ] Therefore, the result displays that the Au/PB is an energy‐efficient EC film. Moreover, our results demonstrate that the excellent EC performances are comparable with other literatures shown in Table S4 (Supporting Information).…”

Section: Resultsmentioning

confidence: 95%

Fast‐Switching Speed and Ultralong Lifespan Au/Prussian Blue Electrochromic Film for Iris Devices Applications

Wang

Zhou

et al. 2023

Adv Materials Inter

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Prussian Blue (PB) is an excellent electrochromic (EC) material, possessing many praiseworthy advantages such as proper redox potential, large transmittance, environmental benignity, neutral colored state, and low cost. However, the co‐influence of weak interaction force and low electrical conductivity results in poor cyclic stability and slow switching speed. In this work, the novel Pt/Au and Au/PB films are prepared by electrodeposition to improve the EC properties of PB. The introduction of Au and Pt nanoparticles not only enhances the conductivity and inhibits polarization, but also increases the contact area and alleviates the stress and strain caused by volume expansion during ion insertion/extraction. Furthermore, the Pt/PB and Au/PB heterojunction with a strong inner electronic field promote the separation of electrons and holes and quicken charge transfer. In consideration of the better electrical conductivity, higher transmittance and strong local plasma resonance effect of Au nanoparticles, the Au/PB film shows ultrastable EC cyclic stability (96.4% after 2000), fast coloration/bleaching switching time (1.36/2.32 s), small charge transfer resistance (38.2 Ω), and high coloration efficiency (131.3 cm2 C−1). In addition, the EC iris devices are designed and assembled using Au/PB film as an EC layer to confirm the feasibility of the material in digital cameras and mobile phones.

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Section: Resultsmentioning

confidence: 95%

Fast‐Switching Speed and Ultralong Lifespan Au/Prussian Blue Electrochromic Film for Iris Devices Applications

Wang

Zhou

et al. 2023

Adv Materials Inter

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“…electrolytes have been adopted for electrochromic WOx, [220,221] V 2 O 5 , [222] Prussian white, [223] carbon nanofoam, [206] Ni-MOF, [205] etc. Albeit the fact that the ionic radii of Na + are larger than Li + , V 2 O 5 shows faster reduction response in NaClO 4 /PC than in LiClO 4 /PC, due to the higher ionic conductivity of NaClO 4 /PC (2.2 × 10 −8 S cm −1 ).…”

Section: Electrochromic Sodium-ion Batterymentioning

confidence: 99%

“…Similar to metal‐ion batteries, the coloration/bleaching of electrochromic devices is mostly based on ion insertion/extraction, rendering dual‐functional electrochromic energy storage devices. [ 217,218 ] Although most of the insertion‐based electrochromic devices employ H + /Li + ‐based electrolytes, [ 205,217,219 ] Na + ‐based electrolytes have been adopted for electrochromic WOx, [ 220,221 ] V 2 O 5 , [ 222 ] Prussian white, [ 223 ] carbon nanofoam, [ 206 ] Ni‐MOF, [ 205 ] etc. Albeit the fact that the ionic radii of Na + are larger than Li + , V 2 O 5 shows faster reduction response in NaClO 4 /PC than in LiClO 4 /PC, due to the higher ionic conductivity of NaClO 4 /PC (2.2 × 10 −8 S cm −1 ).…”

Section: Functional Sodium‐ion Batterymentioning

confidence: 99%

Optimization Strategies Toward Functional Sodium‐Ion Batteries

Chen,

Adit,

et al. 2023

Energy & Environ Materials

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Exploration of alternative energy storage systems has been more than necessary in view of the supply risks haunting lithium‐ion batteries. Among various alternative electrochemical energy storage devices, sodium‐ion battery outstands with advantages of cost‐effectiveness and comparable energy density with lithium‐ion batteries. Thanks to the similar electrochemical mechanism, the research and development of lithium‐ion batteries have forged a solid foundation for sodium‐ion battery explorations. Advancements in sodium‐ion batteries have been witnessed in terms of superior electrochemical performance and broader application scenarios. Here, the strategies adopted to optimize the battery components (cathode, anode, electrolyte, separator, binder, current collector, etc.) and the cost, safety, and commercialization issues in sodium‐ion batteries are summarized and discussed. Based on these optimization strategies, assembly of functional (flexible, stretchable, self‐healable, and self‐chargeable) and integrated sodium‐ion batteries (−actuators, −sensors, electrochromic, etc.) have been realized. Despite these achievements, challenges including energy density, scalability, trade‐off between energy density and functionality, cost, etc. are to be addressed for sodium‐ion battery commercialization. This review aims at providing an overview of the up‐to‐date achievements in sodium‐ion batteries and serves to inspire more efforts in designing upgraded sodium‐ion batteries.

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“…Due to its wide voltage window extended to the negative potential, it can also be used as a cathode ECM in a recent study . The stable structure and large active surface area make the PB show long-term stability and obvious optical contrast. , MnO 2 has been verified to show good electrochromic ability, changing from brownish to transparent, and can act as an excellent ion storage layer in ECDs. , Most importantly, PB is also widely applied in energy storage devices because it can well accommodate common electrolyte ions such as Li + , Na + , and K + . − MnO 2 has also been considered as a promising pseudocapacitive material due to its low cost, rich resource, nontoxicity, and high theoretical capacitance (1370 F/g). − To fabricate an inorganic ECD based on PB and MnO 2 electrodes, on the one hand, the abundant color change can be guaranteed by the color overlay of two electrodes in the EC process on the basis of the subtractive color-mixing theory. , On the other hand, the excellent energy storage performance of the ECD will be achieved based on the pseudocapacitance of the electrodes, and its energy state can be monitored by color change in real time.…”

Section: Introductionmentioning

confidence: 99%

Flexible Inorganic All-Solid-State Electrochromic Devices toward Visual Energy Storage and Two-Dimensional Color Tunability

Ding

Wang

Mei

et al. 2023

ACS Appl. Mater. Interfaces

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Multicolor display has gradually become a soughtafter trend for electrochromic devices due to its broadened application scope. Meanwhile, the advantages of inorganic electrochromic devices such as stable electrochemical performance and good energy storage ability also have great attraction in practical production applications. However, there are still huge challenges for inorganic electrochromic materials to achieve multicolor transformation due to their single-color hue change. Herein, we design an inorganic and multicolor electrochromic energy storage device (MEESD) exhibiting flexibility and all-solidstate merits. Prussian blue (PB) and MnO 2 , as the asymmetrical electrodes of this MEESD, show good pseudocapacitance property, matching charge capacity, and obvious color change. As a typical electrochromic device, the MEESD shows a fast response of 0.5 s and good coloration efficiency of 144.2 cm 2 /C. As an energy storage device, the MEESD presents excellent rate capability and volumetric energy/power density (84.2 mWh cm −3 /23.3 W cm −3 ). Its energy level can be visually monitored by color contrast and optical modulation. In the charging/discharging process, its color can obviously change to various degrees of yellow, green, and blue along with 40% wide optical modulation at 710 nm. Meanwhile, the stability of the MEESD in a common and humidity environment was analyzed in detail from electrochemical, optical, and energy storage aspects. This work provides feasible thoughts to design multifunctional electrochromic devices integrated with inorganic, flexible, all-solid-state, multicolor, and energy storage properties.

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Novel High-Performance and Low-Cost Electrochromic Prussian White Film

Cited by 16 publications

References 29 publications

Fast‐Switching Speed and Ultralong Lifespan Au/Prussian Blue Electrochromic Film for Iris Devices Applications

Fast‐Switching Speed and Ultralong Lifespan Au/Prussian Blue Electrochromic Film for Iris Devices Applications

Optimization Strategies Toward Functional Sodium‐Ion Batteries

Flexible Inorganic All-Solid-State Electrochromic Devices toward Visual Energy Storage and Two-Dimensional Color Tunability

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