Deshielding Anions Enable Solvation Chemistry Control of LiPF₆‐Based Electrolyte toward Low‐Temperature Lithium‐Ion Batteries

Advanced Materials, Год журнала: 2024, Номер 36(16)

Опубликована: Янв. 15, 2024

Abstract Severe capacity decay under subzero temperatures remains a significant challenge for lithium‐ion batteries (LIBs) due to the sluggish interfacial kinetics. Current efforts mitigate this deteriorating behavior rely on high‐solubility lithium salts (e.g., Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), bis(fluorosulfonyl)imide (LiFSI))‐based electrolytes construct anion participated solvation structures. However, such bring issues of corrosion current collector and increased costs. Herein, most commonly used hexafluorophosphate (LiPF 6 ) instead, establish peculiar structure with high ratio ion pairs aggregates by introducing deshielding NO 3 − additive low‐temperature LIBs is utilized. The significantly reduces energy barrier at low temperatures. Benefiting from this, graphite (Gr) anode retains ≈72.3% −20 °C, which far superior 32.3% 19.4% retention counterpart electrolytes. Moreover, LiCoO 2 /Gr full cell exhibits stable cycling performance 100 cycles °C inhibited plating. This work heralds new paradigm in LiPF ‐based electrolyte design operating

Язык: Английский

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Super‐Tough, Non‐Swelling Zwitterionic Hydrogel Sensor Based on the Hofmeister Effect for Potential Motion Monitoring of Marine Animals

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 10, 2024

Hydrogel-based electronic devices in aquatic environments have sparked widespread research interest. Nevertheless, the challenge of developing hydrogel electronics underwater has not been profoundly surmounted because fragility and swelling hydrogels environments. In this work, a zwitterionic double network comprised polyvinyl alcohol (PVA), poly(sulfobetaine methacrylate) (PSBMA), sulfuric acid (H

Язык: Английский

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Skin‐Inspired Multi‐Modal Mechanoreceptors for Dynamic Haptic Exploration

Advanced Materials, Год журнала: 2024, Номер 36(21)

Опубликована: Фев. 16, 2024

Abstract Active sensing is a fundamental aspect of human and animal interactions with the environment, providing essential information about hardness, texture, tackiness objects. This ability stems from presence diverse mechanoreceptors in skin, capable detecting wide range stimuli sensorimotor control biological mechanisms. In contrast, existing tactile sensors for robotic applications typically excel identifying only limited types information, lacking versatility requisite strategies to extract proactively. Here, inspired by haptic perception, skin‐inspired artificial 3D mechanoreceptor (SENS) multiple mechanical developed bridge action closed‐loop system dynamic exploration. A tensor‐based non‐linear theoretical model established characterize deformation (e.g., tensile, compressive, shear deformation) SENS, guidance design optimization multimode properties high fidelity. Based on recognizing objects improved accuracy (≈96%) further demonstrated. exploration approach shows promise such as autonomous learning, healthcare, space deep‐sea

Язык: Английский

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Extreme Hydrogel Bioelectronics

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 20, 2024

Abstract The last decades have witnessed the rapid growth of hydrogel bioelectronics. Traditional hydrogels face challenges when working under extreme conditions, causing a loss stabilities and functionalities. This review provides systematic overview capable with focus on their applications in bioelectronic systems. These are summarized into categories anti‐mechanical damage, anti‐detachment, anti‐swelling, anti‐freezing, anti‐foreign body response. Strategies including material development structural design that can endow above properties introduced. Finally, current new opportunities developing devices systems discussed.

Язык: Английский

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Robust skin-integrated conductive biogel for high-fidelity detection under mechanical stress

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 2, 2025

Soft conductive gels are essential for epidermal electronics but often face challenges when interfacing with uneven surfaces or areas extensive hair, especially under mechanical stress. In this study, we employed the concept of liquid-to-solid transformation to enhance integration at biointerfaces and designed an in-situ biogel capable rapidly transitioning between liquid solid states within 3 min via a temperature switch. The features semi-interpenetrating polymer network design dual conduction pathways, resulting in high tensile strength (~1–3 MPa), skin-compatible modulus (~0.3–1.1 strong skin adhesive (~1 superior signal-to-noise ratio (SNR, ~30–40 dB). demonstrates significant performance mechanically demanding environments, showing potential accurately capturing outdoor exercise data, monitoring muscle recovery from sports-induced fatigue, vivo cardiac physiological signals. concept, coupled strategy highly integrated stable soft materials, provides basis advancing interface designs high-fidelity signal acquisition. Developing is challenge: Here, authors introduced improve biointerface integration.

Язык: Английский

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A Flexible-Integrated Multimodal Hydrogel-Based Sensing Patch

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Фев. 21, 2025

Abstract Sleep monitoring is an important part of health management because sleep quality crucial for restoration human health. However, current commercial products polysomnography are cumbersome with connecting wires and state-of-the-art flexible sensors still interferential being attached to the body. Herein, we develop a flexible-integrated multimodal sensing patch based on hydrogel its application in unconstraint monitoring. The comprises bottom hydrogel-based dual-mode pressure–temperature layer top electrospun nanofiber-based non-contact detection as one integrated device. core substrate exhibits strong toughness water retention, temperature, pressure, proximity realized different mechanisms no crosstalk interference. function verified simulated real-world scenario by robotic hand grasping objects validate practicability. Multiple patches locations pillow assembled intelligent Versatile human–pillow interaction information well their evolution over time acquired analyzed one-dimensional convolutional neural network. Track head movement recognition bad patterns that may lead poor achieved, which provides promising approach

Язык: Английский

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Hydrogel-based pressure sensors for electronic skin systems

Matter, Год журнала: 2025, Номер 8(3), С. 101992 - 101992

Опубликована: Март 1, 2025

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Encapsulation of hydrogel sensors

Chemical Engineering Journal, Год журнала: 2024, Номер 484, С. 149631 - 149631

Опубликована: Фев. 13, 2024

Язык: Английский

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Highly Conductive and Stretchable Hydrogel Nanocomposite Using Whiskered Gold Nanosheets for Soft Bioelectronics

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 11, 2024

Abstract The low electrical conductivity of conductive hydrogels limits their applications as soft conductors in bioelectronics. This originates from the high water content hydrogels, which impedes facile carrier transport between fillers. study presents a highly and stretchable hydrogel nanocomposite comprising whiskered gold nanosheets. A dry network nanosheets is fabricated then incorporated into wet matrices. preserve tight interconnection despite content, providing high‐quality percolation even under stretched states. Regardless type matrix, gold‐hydrogel nanocomposites exhibit ≈520 S cm −1 stretchability ≈300% without requiring dehydration process. reaches maximum ≈3304 when density controlled. gold‐adhesive nanocomposite, can achieve conformal adhesion to moving organ surfaces, for bioelectronics demonstrations. adhesive electrode outperforms elastomer‐based electrodes vivo epicardial electrogram recording, pacing, sciatic nerve stimulation.

Язык: Английский

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A Multifunctional Hydrogel with Multimodal Self-Powered Sensing Capability and Stable Direct Current Output for Outdoor Plant Monitoring Systems

Nano-Micro Letters, Год журнала: 2024, Номер 17(1)

Опубликована: Ноя. 27, 2024

Smart farming with outdoor monitoring systems is critical to address food shortages and sustainability challenges. These facilitate informed decisions that enhance efficiency in broader environmental management. Existing equipped energy harvesters self-powered sensors often struggle fluctuating sources, low durability under harsh conditions, non-transparent or non-biocompatible materials, complex structures. Herein, a multifunctional hydrogel developed, which can fulfill all the above requirements build self-sustainable solely by it. It serve as stable harvester continuously generates direct current output an average power density of 1.9 W m

Язык: Английский

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