The hydrogels have high mechanical durability and adhesion strength. • The hydrogel can be applied at a strain sensor at an extremely low temperature. • Supercapacitor assembled manifests a high energy density of 26.97 Wh·kg −1 and a max. power density of ...
As a proof-of-concept, a flexible supercapacitor device was fabricated which exhibited a specific capacitance of 134.6 mF cm −2 and 87.9% retention of the initial capacitance after 1000 cycles. These hybrid hydrogels are …
Flexible zinc-ion hybrid capacitors (ZIHCs) based on hydrogel electrolytes are an up-and-coming and highly promising candidate for potential large …
Compared with flexible batteries, abundantly developed supercapacitors comprised of flexible electrodes (current collectors) [15, 16] and gel-state electrolytes [17, 18] possess more outstanding electrical performance containing ultrahigh power density, volumetric capacitance, and long-term life, regarded as a promising candidate to …
An all-in-one flexible and all-solid-state supercapacitor has been effectively generated by employing a layer-gelation strategy. •. The supercapacitor has …
High-performance supercapacitors, as highly promising candidates for bridging the gap between conventional lithium-ion batteries and traditional electrostatic capacitors, are the key to progress in the field of energy …
1 Introduction To catch up with the faster pace and higher quality demand in modern life, flexible, wearable, and multifunctional electronic devices are gaining increasing attention and have become a hot spot in the market of digital devices, [1-6] for example, smartwatches, [7, 8] bendable smartphones, [] flexible and foldable OLED panels, [10, 11] smart fibers, [12 …
Electrochemical capacitors are electrochemical devices with fast and highly reversible charge-storage and discharge capabilities. The devices are attractive for energy storage particularly in applications involving high-power requirements. Electrochemical capacitors employ two electrodes and an aqueous or a
Therefore, in the application of hydrogels as an adsorbent and supercapacitor, improving the adsorption sites and conductivity of hydrogels is a major challenge. Adsorption capacity and adsorption rate are important indexes to evaluate the performance of adsorbents.
Hydrogel-based supercapacitors with excellent mechanical properties can overcome several unsettled challenges that current wearable power supply …
Conducting polymer hydrogels (CPHs) electrodes provide an attractive material platform for future energy storage applications, owing to their fascinating properties. • Hierarchical 3D porous structure of CPHs facilitate …
Ultrastrong, highly conductive and capacitive hydrogel electrode for electron-ion transduction ... PSS) hydrogels could possess both good EDL capacitance and good conductivity, but usually have a low mechanical strength …
Unlike metals, ceramics, or typical plastics, hydrogels are semi-solid with high water content. Because hydrogels are generally viscoelastic, shapable, and ionically conductive, they can be ...
Flexible hydrogels are attracting significant interest as solid-like electrolytes for energy storage devices, especially for supercapacitors, because of their lightweight and anti-deformation …
Interestingly, the CP hydrogels could still show capacitive behavior, with similar capacitances (∼110 mF cm −2 at 0.62 mA cm −2) in NaCl solutions, even physiological saline, as proved by the CV, GCD, and EIS tests (Figures 2 …
As a proof-of-concept, a flexible supercapacitor device was fabricated which exhibited a specific capacitance of 134.6 mF cm −2 and 87.9% retention of the initial capacitance after 1000 cycles. These hybrid hydrogels are considered promising energy storage
The use of gelatin hydrogels as electrolytes in ITESCs and electric double-layer capacitors (EDLCs) also demonstrates its versatility. This work demonstrates substantial influence of electrodes on the adjustable thermopower and high thermoelectric performance of gelatin-based ITESCs.
Flexible zinc-ion hybrid capacitors (ZIHCs) based on hydrogel electrolytes are an up-and-coming and highly promising candidate for potential large-scale energy storage due to their combined complementary advantages of zinc batteries and capacitors. However, the freezing induces a sharp drop in conductivity and mechanical property with …
Download scientific diagram | Principle function for interdigital capacitors coated with a hydrogel and their equivalent electric circuit. D represent the minimum thickness of the hydrogel, ∆D ...
2 · Flexible devices, such as soft bioelectronics and stretchable supercapacitors, have their practical performance limited by electrodes which are desired to have high conductivity and capacitance ...
Functional hydrogels are an emerging material platform for advanced energy-storage technologies. ... A facile supercapacitor made from this new hydrogel electrolyte provides a hint for future portable and wearable energy-storage devices. Overall, self-healing of ...
Semantic Scholar extracted view of "Acid-mediated strategies designed for stretchable and durable polyacrylamide/sodium alginate dual-network hydrogels toward flexible capacitors and wearable sensors." by Shuangqing Li et al. DOI: 10.1016/j.ijbiomac.2024.134065
The assembled supercapacitor of the hydrogel electrolyte demonstrates a high specific capacitance of 301.8 F·g –1, with a maximum energy density of 26.73 Wh·kg –1, a power density of 2.38 kW·kg –1, and a capacitance retention of 94.1% after 10 000
Owing to their excellent mechanical flexibility, electrical conductivity, and biocompatibility, conductive hydrogels (CHs) are widely used in the fields of energy and power, and biomedical technology. To arrive at a better understanding of the design methods and development trends of CHs, this paper summarizes and analyzes related …
Functional hydrogels are an attractive material platform for energy-storage technologies. Thus, the development of hydrogels with enhanced physicochemical properties (e.g., improved mechanical strength, flexibility, and charge transport) offers new opportunities for ...
Hydrogels are promising materials for flexible wearable sensors, but they often suffer from unpredictable mechanical damage. In this work, self-healing polyampholyte hydrogels are developed and explored in constructing wearable mechanosensors including resistive strain sensors and capacitive pressure sensors. In order to prepare the …
Recently, aqueous zinc-ion batteries (ZIBs) and zinc-ion capacitors (ZICs) stand out as two of the most potent candidates for wearable electronics due to their excellent electrochemical performance, intrinsic safety, low cost, …
The PVA-based hydrogel electrolyte, characterized by its high ionic conductivity and degradability, holds significant promise for applications in flexible supercapacitors. However, pure PVA hydrogel electrolytes have suffered from deficiencies in flexibility, self-healing properties, and anti-freezing perfor
This review covers different types of hydrogels, including biopolymer hydrogels, carbon-based hydrogels, and self-healing hydrogels, and presents their use …
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