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

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 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

Language: Английский

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Skin‐Inspired Multi‐Modal Mechanoreceptors for Dynamic Haptic Exploration

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)

Published: Feb. 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

Language: Английский

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Encapsulation of hydrogel sensors

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149631 - 149631

Published: Feb. 13, 2024

Language: Английский

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

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 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.

Language: Английский

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A Flexible-Integrated Multimodal Hydrogel-Based Sensing Patch

Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)

Published: Feb. 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

Language: Английский

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Extreme Hydrogel Bioelectronics

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 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.

Language: 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, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 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

Language: Английский

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Ways forward with conductive hydrogels: Classifications, properties, and applications in flexible electronic and energy gadgets

Materials Science and Engineering R Reports, Journal Year: 2025, Volume and Issue: 163, P. 100923 - 100923

Published: Jan. 8, 2025

Language: Английский

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Stratum Corneum‐Inspired Zwitterionic Hydrogels with Intrinsic Water Retention and Anti‐Freezing Properties for Intelligent Flexible Sensors

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Hydrogels, which mimic the properties of natural tissues, are essential for flexible electronics in human‐machine interfaces (HMIs). However, traditional hydrogels suffer from dehydration, compromising stability and functionality. To address this issue, a stratum corneum‐inspired, water‐retaining hydrogel is developed using hygroscopic polymers bound water. Three types hydrophilic monomers (non‐ionic, mono‐ionic, zwitterionic) explored, with polyzwitterions, particularly N,N‐dimethyl (acrylamidopropyl) ammonium propane sulfonate (DMAAPS), forming quasi‐hydrogel that retains softness flexibility conventional hydrogels. Water acts as plasticizer, enhancing polymer chain mobility reducing stiffness. The DMAAPS maintains 100% weight retention under specific humidity conditions shows skin‐like across wide range. Young's modulus increases 54 to 118 kPa relative decreases 80% 40%. absence free water confers intrinsic anti‐freezing properties. A triple crosslinking mechanism conductive endow stretchability (> 2000%), toughness, elasticity, self‐healing, stable sensing capabilities. functions an excellent sensor real‐time, sensitive detection human motion physiological signals. An intelligent handwriting recognition platform high accuracy also established double‐channel signal collection machine learning algorithms, offering insights next‐generation durable, biomimetic, smart HMIs.

Language: Английский

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Mechanical tough, stretchable, and adhesive PEDOT:PSS-based hydrogel flexible electronics towards multi-modal wearable application

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161645 - 161645

Published: March 1, 2025

Language: Английский

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