Growth of a porous NiCoO<sub>2</sub> nanowire network for transparent-to-brownish grey electrochromic smart windows with wide-band optical modulation

Lei, Pengyang; Wang, Jinhui; Zhang, Ping; Liu, Shiyou; Zhang, Siyu; Gao, Yuelin; Tu, Jiangping; Cai, Guofa

doi:10.1039/d1tc03805b

Cited by 38 publications

(18 citation statements)

References 66 publications

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“…By calculation, the coloration and bleaching efficiency can reach 77.6 and 97.8 cm 2 /C, respectively (Figure h). This result is higher than that in some Li-based solid-state ECDs − and especially higher than that in ECDs based on the PB or MnO 2 electrode. − …”

Section: Resultsmentioning

confidence: 67%

Novel Prussian White@MnO₂-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

Ding

Wang

Mei

et al. 2022

ACS Appl. Mater. Interfaces

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Flexible electrochromic devices have attracted considerable attention in recent years due to their great potential in smart multifunction electrochromic energy storage devices and wearable intelligent electronics. Herein, we present an inorganic flexible Li-based electrochromic energy storage device (EESD) by combining a Prussian white@MnO 2 -composited electrode (PWM) and sputtering-made WO 3 electrode. The synergistic effect of Prussian white and MnO 2 plays a positive role both in energy storage and electrochromic property of the EESD. Its energy level can be quantified by the transmittance spectrum and chrominance difference, and its charging−discharging process can be monitored in real time by optical modulation at special wavelength. Specifically, the EESD can endure a 10,000 times cyclic voltammetry cycle without obvious degradation at wide voltage windows (−2 to 2.5 V) and realize a high coloration efficiency (77.6 cm 2 /C) with 35% optical modulation at 510 nm. In terms of energy storage performance, the EESD demonstrates excellent volumetric energy/power density (1.25 W cm −3 /13.2 mWh cm −3 ) and remarkable stability with close to 98.3% capacitance retention and 99.4% coulombic efficiency after more than 4000 cycles. Its charging and discharging degree can be visualized in different spectral regions. There are 40% transmittance change for charging in the blue light region (450−480 nm) and 45% transmittance change for discharging in the red light region (620−750 nm). Based on its multicolor property, a quantitative indicator of charge state is achieved by the linear dependence of real-time chrominance change as stored or released charge. The ∼11 mC/cm 2 stored charge capacity can cause an ∼11 increase in chrominance difference ΔE value, while ∼7 mC/cm 2 discharge capacity can cause a ΔE value increase of ∼4. This work provides an efficient strategy to develop portable multicolor-integrated EESDs toward high performance and long stability.

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Section: Resultsmentioning

confidence: 67%

Novel Prussian White@MnO₂-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

Ding

Wang

Mei

et al. 2022

ACS Appl. Mater. Interfaces

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Section: Resultsmentioning

confidence: 99%

“…NiO-3 h exhibits a high coloring efficiency when a three-dimensional hierarchical structure with an ultra-high electrochemically active area is present, which also corroborates earlier results. 64,65 CV measurements were performed to assess the charge storage ability. It is obvious that the enclosed area of NiO-3 h is signicantly larger than that of the other NiO lms as shown in Fig.…”

Section: Ce ¼ Dod/qmentioning

confidence: 99%

In situ grown hierarchical NiO nanosheet@nanowire arrays for high-performance electrochromic energy storage applications

et al. 2022

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“…Several energy-saving active mode techniques, such as electrochromic, − thermochromic, − thermotropic, − gasochromic, − etc., have been tested in this framework. With the use of an external power source, electrochromic windows provide light transmission in a controlled manner.…”

Section: Introductionmentioning

confidence: 99%

Cost-Effective Smart Window: Transparency Modulation via Surface Contact Angle Controlled Mist Formation

Mondal

Awasthi

Ganesha

et al. 2023

ACS Appl. Mater. Interfaces

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Implementing simple and inexpensive energy-saving smart technologies in households is quite effective to accomplish on-demand privacy control and reduction in energy consumption. Conventional smart glasses face difficulty in making inroads into the consumer market due to utilizing expensive active layers, electrolytes, and transparent electrodes. Thus, the need of the hour is to develop an unconventional smart window, which should be cost-effective, power-efficient, and simple to fabricate. Against this backdrop, we report the fabrication of a new class of smart partition windows termed “mist-driven transparency switching glass”. The fabrication protocol includes surface energy modification of two glass panes, followed by assembling them into a square or rectangular-shaped narrow cell with appropriate inlets and outlets for mist. In its pristine state, the device is transparent, as expected of two plain glasses forming a cell. Insertion of cool mist into the device produces tiny droplets onto the inner walls due to condensation enabling scattering of light, thereby producing the translucent state. The optimized device shows a transmittance modulation of as much as ∼65% at 550 nm, allowing it to reduce the indoor temperature by more than 30% compared to a regular glass windowpane. To realize commercial viability, a large area device (30 × 30 cm2) was fabricated, which could be operated wirelessly through a cellphone application paving the way for incorporating the Internet of Things into the technology.

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Growth of a porous NiCoO₂ nanowire network for transparent-to-brownish grey electrochromic smart windows with wide-band optical modulation

Abstract: Electrochromic smart windows can dynamically regulate the transmittance of solar radiation to reduce the energy consumption and improve occupantss comfort in the building. Metal oxide-based electrochromic materials are highly desired...

Cited by 38 publications

References 66 publications

Novel Prussian White@MnO₂-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

Novel Prussian White@MnO₂-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

In situ grown hierarchical NiO nanosheet@nanowire arrays for high-performance electrochromic energy storage applications

Cost-Effective Smart Window: Transparency Modulation via Surface Contact Angle Controlled Mist Formation

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Growth of a porous NiCoO2 nanowire network for transparent-to-brownish grey electrochromic smart windows with wide-band optical modulation

Abstract: Electrochromic smart windows can dynamically regulate the transmittance of solar radiation to reduce the energy consumption and improve occupantss comfort in the building. Metal oxide-based electrochromic materials are highly desired...

Cited by 38 publications

References 66 publications

Novel Prussian White@MnO2-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

Novel Prussian White@MnO2-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

In situ grown hierarchical NiO nanosheet@nanowire arrays for high-performance electrochromic energy storage applications

Cost-Effective Smart Window: Transparency Modulation via Surface Contact Angle Controlled Mist Formation

Contact Info

Product

Resources

About

Growth of a porous NiCoO₂ nanowire network for transparent-to-brownish grey electrochromic smart windows with wide-band optical modulation

Novel Prussian White@MnO₂-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life

Novel Prussian White@MnO₂-Based Inorganic Electrochromic Energy Storage Devices with Integrated Flexibility, Multicolor, and Long Life