Electrode materials for flexible supercapacitor with real-time visual monitoring of potential

Wang, Pengna; Sun, Ying; Li, Jie; Zhu, Guanqun; Zhang, Xueqin; Yang, Hong; Lin, Baoping

doi:10.1016/j.cej.2022.137330

Cited by 15 publications

(4 citation statements)

References 60 publications

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“…From Figure S4, it is evident that after 1000 cycles the Coulombic efficiency of NiCo-LDH/GNS@CC and NiCo-LDH@CC electrodes reached 100 and 97.2%, respectively. The NiCo-LDH/GNS@CC electrode can retain approximately 100% of its initial capacitance, while the NiCo-LDH@CC electrode only maintained 31.59%, indicating that the incorporation of GNS improves the efficiency of charge transfer and enhances the diffusion rate of electrolyte ions. , …”

Section: Resultsmentioning

confidence: 98%

“…The NiCo-LDH/GNS@CC electrode can retain approximately 100% of its initial capacitance, while the NiCo-LDH@CC electrode only maintained 31.59%, indicating that the incorporation of GNS improves the efficiency of charge transfer and enhances the diffusion rate of electrolyte ions. 46,47 The electrochemical performance of the NiCo-LDH/GNS@ CC electrode was further investigated within the potential range of −1.1 to 0.5 V (the electrochemical test results of GNS@CC are shown in Figure S5). Figure 3c illustrates CV curves of NiCo-LDH/GNS@CC, exhibiting a gradual elevation in scan rates, spanning from 10 to 100 mV s −1 .…”

Section: + + +mentioning

confidence: 99%

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Rapid and Facile Method for the Synthesis of a Nanoarray Hierarchical Composite and Its Application in Flexible Self-Chargeable Supercapacitors

Chen,

Liu,

Zhang

et al. 2024

ACS Appl. Electron. Mater.

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In this paper, a 3D nanoarray hierarchical composite composed of graphene nanoscroll (GNS) and nickel− cobalt layered double hydroxide (NiCo-LDH) nanoplates was successfully constructed on carbon cloth (CC) by electrophoretic deposition and subsequent electrodeposition, in which the NiCo-LDH nanoplates were vertically aligned on the GNS. Owing to the combined advantages of 1D GNS for boosting the charge transport and preventing stacking, 2D NiCo-LDH nanoplates for increasing the capacitance and improving the mechanical stability, and the 3D carbon cloth substrate for providing electrical conductivity and flexibility, the NiCo-LDH/GNS@CC electrode exhibited a high areal capacitance of 2529.8 mF•cm −2 and a capacitance retention of 101.28% even after 10,000 cycles. Moreover, the as-assembled flexible symmetric supercapacitor (FSSC) device provided an areal capacitance of 603.8 mF•cm −2 at 1 mA•cm −2 . Notably, the FSSC achieved an energy density of 195.54 μW h cm −2 when the power density was 0.76 mW•cm −2 . The device also demonstrated good flexibility, structural stability, and water resistance. Additionally, a flexible self-chargeable pack (FSCP) was assembled by integrating the fabricated flexible supercapacitor with a flexible solar cell panel to demonstrate its promising application in real-world electronic devices.

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Section: Resultsmentioning

confidence: 98%

Section: + + +mentioning

confidence: 99%

Rapid and Facile Method for the Synthesis of a Nanoarray Hierarchical Composite and Its Application in Flexible Self-Chargeable Supercapacitors

Chen,

Liu,

Zhang

et al. 2024

ACS Appl. Electron. Mater.

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“…[5,6] Organic EC/EFC materials have attracted much attention due to their ingenious molecular design, flexible synthesis strategies, tunable photoelectric properties, and excellent processing properties. [7][8][9] An effective strategy for constructing EC/EFC dual-functional materials is to introduce fluorophore into EC materials. Under electrical stimulus, the molecular structure changes of the electroactive group and the electron/energy transfer between the fluorophore and the electroactive unit in the EC materials can satisfy the dual-modulation of color/fluorescence.…”

Section: Introductionmentioning

confidence: 99%

Electrochromic/Electrofluorochromic Devices based on Terpyridine‐Attached Viologen Derivatives

Zhuang,

Zhu,

Zhang

et al. 2024

Adv Materials Technologies

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Electrochromic/electrofluorochromic (EC/EFC) dual‐functional materials with electrochemically switchable colors and fluorescence offer the possibility of developing reflection/emission dual‐mode integrated displays in one device. However, unlike the easily adjustable multi‐color EC properties, the EFC properties with tunable fluorescence intensity are relatively broad, while those with tunable color emission are rare. Herein, two terpyridine‐attached viologen derivatives Tpy‐Vio‐1 and Tpy‐Vio‐2 are designed and synthesized for exploring the relationship between molecular structure and their EC/EFC properties. Due to the introduction of 4′‐phenyl‐2,2′:6′,2″‐terpyridine groups, Tpy‐Vio‐1 and Tpy‐Vio‐2 devices exhibited EFC characteristics in addition to EC properties. Tpy‐Vio‐1 and Tpy‐Vio‐2 devices displayed similar color and fluorescence changes after applying electric potentials. Nevertheless, compared to the Tpy‐Vio‐2 devices, the Tpy‐Vio‐1 devices possessed lower applied voltage (1.8 V), shorter response times (9.5 s for coloring and 8.5 s for bleaching), higher cyclic stability (480 cycles), and better coloration efficiency (95 cm2 C−1). This study believes that this work will provide effective guidance for the design and preparation of EC/EFC dual‐functional materials.

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“…In the emerging eld of wearable and exible electronics applications, exible electrochromic devices (ECDs) with exibility and electrochromism have attracted great attention because of their great potential applications in e-books, smart clothes, energy and information displays, and biological camouaging skin. [1][2][3][4][5] In particular, the exible electrochromic displays are presently the frontier of EC research, which can actively manipulate multiple colors by changing external voltage or current, facilitating wearability and satisfying individual demands. Compared with other display technologies, liquid crystal displays (LCDs), 6 photonic crystal displays 7, and so on, the electrochromic display features several advantages, such as a simple structure, no backlight required, high contrast, and low driving voltage.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin flexible electrochromic devices enabled by highly transparent ion-conducting films

Gong

et al. 2023

J. Mater. Chem. A

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Electrode materials for flexible supercapacitor with real-time visual monitoring of potential

Cited by 15 publications

References 60 publications

Rapid and Facile Method for the Synthesis of a Nanoarray Hierarchical Composite and Its Application in Flexible Self-Chargeable Supercapacitors

Rapid and Facile Method for the Synthesis of a Nanoarray Hierarchical Composite and Its Application in Flexible Self-Chargeable Supercapacitors

Electrochromic/Electrofluorochromic Devices based on Terpyridine‐Attached Viologen Derivatives

Ultrathin flexible electrochromic devices enabled by highly transparent ion-conducting films

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