Perspective—Supercapacitor-Powered Flexible Wearable Strain Sensors

Manjunatha, C; KP, Shwetha; Athreya, Yash; Kumar, S. Girish; MK, Sudha Kamath

doi:10.1149/2754-2726/acb27a

Cited by 21 publications

(13 citation statements)

References 47 publications

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“…MXene shows mimicking properties of carbide, transition metal nitride, carbonitride functionalities, and metallic electrical conductivity . Such a type of materials was also used toward the integrated part in the field of flexible and wearable sensors . Moreover, due to pseudocapacitance characteristics, the conducting polymers showed an excellent C sp but encounters the problem of poor cycling stability and low power capabilities. − In contrast, redox-active polymers that can store energy via the faradaic reversible reaction have emerged as an attractive alternative to carbon-based materials, transition metal oxides, and conducting polymers due to their structural diversity and tunability, better mechanical flexibility, environmental friendliness, cost effectiveness, and processability. − The redox-active polymers with p-, n-, or bipolar doping charge states with much more stable structures were developed for organic supercapacitor (SC) technologies.…”

Section: Introductionmentioning

confidence: 99%

Pyridine-Functionalized Naphthalene Diimide-Based Cross-Linked Polymer for Efficient Supercapacitor Applications

2023

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In the electrochemical energy storage system, redox-active organic polymers have great attraction due to their eco-friendly, easily available raw materials, variation of design architecture with tailoring their molecular structure, and excellent redox-active functional groups. In this paper, we designed a novel pyridine-functionalized naphthalene diimide cross-linked polymer as an electrode material. The synthesized naphthalene diimide appended the pyridine cross-linked polymer with three-dimensional network structures, showing an outstanding electrochemical performance in SC applications. The monomer NDI-PY-AC is synthesized by using 1,4,5,8-naphthalenetetracarboxylic dianhydride (NDA) and PY-AC by a simple imidization–condensation reaction. Furthermore, the PNDI-PY-AC polymer was synthesized via radical polymerization using AIBN as an initiator. The cross-linked PNDI-PY-AC polymer was confirmed using solid-state 13C NMR and Fourier transform infrared (FT-IR) spectroscopic techniques. The PNDI-PY-AC polymer morphology of the material was examined by field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) images. The specific surface area and porosity of the polymer were confirmed by the Brunauer–Emmett–Teller (BET) method. The cross-linked-type morphology of the polymer resolved the solubility issue of the electrode material in the electrolyte. The practical applicability of PNDI-PY-AC is evaluated using symmetric two-electrode Swagelok cell assembly. The PNDI-PY-AC/GF electrode acts as a cathode and anode in the solid-state synchronous condenser (SSC) device, which shows a specific capacitance (C sp) of 202.85 F g–1 at 0.5 A g–1 current density. The SSC device shows a high energy density of 49.69 Wh kg–1 with a power density of 1259.99 W kg–1 at a discharge current density of 0.5 A g–1. We observed that the PNDI-PY-AC/GF electrode exhibited an original capacitance retention of 92.86% after 5000 GCD cycles at 2 A g–1 current density.

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Section: Introductionmentioning

confidence: 99%

Pyridine-Functionalized Naphthalene Diimide-Based Cross-Linked Polymer for Efficient Supercapacitor Applications

2023

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“…Various attempts were made to develop nickel-based electrode materials due to their greater theoretical specific capacity, variable oxidation states, excellent electrochemical stability, and environmental friendliness. − Henceforth, oxides, sulfides, and selenides of nickel materials are exhaustively studied for electrochemical energy conversion and storage applications. − As compared to other compounds, transition metal borates have been rarely used in batteries, supercapacitors, electrocatalysis, and electrochemical sensors, even though borates are good candidates for these applications. − Theoretically, all transition metals are capable of combining with boron to form a variety of borates and borides. , So far, various experimental approaches such as electrodeposition, solvothermal, solid-state chemical reaction, in situ co-reduction, microwave irradiation, direct precipitation, liquid-phase reaction, hydrothermal techniques, and direct precipitation have been adopted to synthesize them. Nickel-based composite materials such as Ni(OH) 2 , NiS, and Ni 2 P have been examined broadly and employed as electrode materials for supercapacitors exhibiting remarkable electrochemical performance. , However, these materials, when used alone, often exhibit low electrochemical conductivity, which cannot fulfill the high power density requirement, and hence, carbon or conductive polymers must be added to them .…”

Section: Introductionmentioning

confidence: 99%

Scalable Synthesis of Ni₃B₂O₆ Nanograins and Fabrication of a Coin Cell Supercapacitor for Powering Temperature Sensor Devices

Somanath,

Athreya

et al. 2023

ACS Appl. Electron. Mater.

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In this work, we present a facile and scalable method to synthesize nickel orthoborate nanograins (NBNG) by a simple solution combustion method. The expected crystallinity, phases, and functional groups of NBNG were confirmed by X-ray diffraction (XRD), Raman, and Fourier transform infrared (FTIR) spectroscopy techniques. In addition, the morphological features, chemical composition, and surface area of the NBNG nanograins were analyzed by field-emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) techniques. Electrochemical studies confirm that the NBNG displayed a specific capacitance of 684 F g–1 at 1 A g–1 with a retention of 73.6% after 5000 cycles, which is found to be a very promising value compared to the data reported so far. Further, its asymmetric coin cells prepared by using activated carbon (AC) as the opposite electrode (NBNG//AC) displayed a very encouraging specific capacitance of 138.86 F g–1 at 1 A g–1 (with a retention of 83% after 5000 cycles), an energy density of 59.06 Wh kg–1, and a power density of 1166.67 W kg–1. Inspired by these values, we further used an NBNG//AC supercapacitor device to power the Arduino microcontroller circuit-based temperature sensor device. The sensor device powered by four NBNG//AC coin cells showed the desired temperatures to be between 25 and 34 °C. The electrochemical results of NBNG//AC reported in this work will surely inspire many material scientists to further explore and develop highly functional transition metal borate-based materials for energy and electronic device applications.

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“…Additionally, it can overcome the limitations of current POF materials by analyzing how the observed optical attenuation of POF affects the overall performance of wavelength multiplexing. [18][19][20] Experimentally we show that reflection noise in a multimode fiber link with a vertical-cavity surface-emitting laser can be reduced using graded-index polymer optical fiber (GI POF). Looking at the beams reflected in the vertical-cavity surface-emitting laser (VCSEL) reveals that the noise reduction effect is closely related to random mode coupling, which is induced by light scattering due to microscopic heterogeneities in the core material of the GI POF.…”

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confidence: 97%

A Comparative Study of Plastic and Glass Optical Fibers for Reliable Home Networking

Manea¹,

Molood²,

Al-Jubouri³

et al. 2023

ECS J. Solid State Sci. Technol.

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Home networking using fiber optics is essential for uninterrupted data transmission in modern communication networks. In this study, we evaluate and compare the reliability of plastic optical fibers (POFs) and glass optical fibers (GOFs) for home networking applications and assess the advantages and disadvantages of POF and GOF over short distances. We conclude that POF is more suitable for home network applications due to its higher reliability and that it has the advantage of being cost-effective and flexible for short-distance applications. The results show that POF indicates higher reliability and better performance at 82.5517 of the Q factors, 0.00221355 of the eye height, and 0.0028307 of the threshold values at 30 meters, while GOF shows 63.0051 of the Q factor, 0.00378087 of the eye height, and 0.00434736 of the threshold values. Moreover, this research highlights the importance of reliability in designing and applying optical fiber networks and can help network designers and engineers make informed decisions when selecting the appropriate type of optical fiber for specific applications.

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Perspective—Supercapacitor-Powered Flexible Wearable Strain Sensors

Cited by 21 publications

References 47 publications

Pyridine-Functionalized Naphthalene Diimide-Based Cross-Linked Polymer for Efficient Supercapacitor Applications

Pyridine-Functionalized Naphthalene Diimide-Based Cross-Linked Polymer for Efficient Supercapacitor Applications

Scalable Synthesis of Ni₃B₂O₆ Nanograins and Fabrication of a Coin Cell Supercapacitor for Powering Temperature Sensor Devices

A Comparative Study of Plastic and Glass Optical Fibers for Reliable Home Networking

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Perspective—Supercapacitor-Powered Flexible Wearable Strain Sensors

Cited by 21 publications

References 47 publications

Pyridine-Functionalized Naphthalene Diimide-Based Cross-Linked Polymer for Efficient Supercapacitor Applications

Pyridine-Functionalized Naphthalene Diimide-Based Cross-Linked Polymer for Efficient Supercapacitor Applications

Scalable Synthesis of Ni3B2O6 Nanograins and Fabrication of a Coin Cell Supercapacitor for Powering Temperature Sensor Devices

A Comparative Study of Plastic and Glass Optical Fibers for Reliable Home Networking

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Scalable Synthesis of Ni₃B₂O₆ Nanograins and Fabrication of a Coin Cell Supercapacitor for Powering Temperature Sensor Devices