A Breathable, Stretchable, and Self‐Calibrated Multimodal Electronic Skin Based on Hydrogel Microstructures for Wireless Wearables

Advanced Functional Materials, Год журнала: 2024, Номер 34(32)

Опубликована: Апрель 12, 2024

Abstract Biomimetic electronic skins (e‐skins) are widely used in wearables, smart prosthesis and soft robotics. However, multimodal e‐skins, especially those based on hydrogels, face multiple challenges for practical applications, involving multi‐sensing signal mutual interference, low breathability stretchability. Here, a breathable stretchable e‐skin with multilayer film microstructure is developed to achieve self‐calibrated sensing of any two three stimuli: strain, temperature, humidity, minimal crosstalk. Hydrogel fibers different shapes designed strain temperature modules, the hydrogel as humidity module. The exhibits impressive performance, including detection limit (0.03%), linearity (R 2 = 0.990), high‐temperature sensitivity (1.77%/°C), wide range (33–98% RH). Interestingly, due directional anisotropy shaped fibers, realizes directions. By introducing porous elastomer encapsulation membranes, wearing comfort attained, while high stretchability (100% strain) maintained. Furthermore, personalized human‐machine interaction system created by integrating wireless circuit realize real‐time gesture recognition, physiological signals monitoring, prosthesis.

Язык: Английский

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Biomass-based functional materials for rechargeable Zn-ion batteries

Energy storage materials, Год журнала: 2024, Номер 71, С. 103605 - 103605

Опубликована: Июнь 27, 2024

Язык: Английский

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Trade-off between H₂O-rich and H₂O-poor electric double layers enables highly reversible Zn anodes in aqueous Zn-ion batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(7), С. 2566 - 2575

Опубликована: Янв. 1, 2024

Trade-off between H 2 O-rich and O-poor EDLs to balance dead Zn dendrites side reactions, realizing highly reversible anodes.

Язык: Английский

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A Hydrogel Electrolyte with High Adaptability over a Wide Temperature Range and Mechanical Stress for Long‐Life Flexible Zinc‐Ion Batteries

Small, Год журнала: 2024, Номер 20(30)

Опубликована: Март 6, 2024

Abstract Flexible zinc‐ion batteries have garnered significant attention in the realm of wearable technology. However, instability hydrogel electrolytes a wide‐temperature range and uncontrollable side reactions Zn electrode become main problems for practical applications. Herein, N,N‐dimethylformamide (DMF) to design binary solvent (H 2 O‐DMF) is introduced combined it with polyacrylamide (PAM) ZnSO 4 synthesize electrolyte (denoted as PZD). The synergistic effect DMF PAM not only guides 2+ deposition on Zn(002) crystal plane isolates H O from anode, but also breaks hydrogen bonding network between water improve stability electrolytes. Consequently, symmetric cell utilizing PZD can stably cycle over 5600 h at 0.5 mA cm − @0.5 mAh −2 . Furthermore, Zn//PZD//MnO full exhibits favorable adaptability (for 16000 cycles 3 A g −1 under 25 °C, 750 98 0.1 ‐20 °C) outstanding mechanical properties lighting up LEDs conditions pressure, bending, cutting, puncture). This work proposes useful modification designing high‐performance electrolyte, which provides reference investigating flexible aqueous batteries.

Язык: Английский

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Electric Double Layer Regulator Design through a Functional Group Assembly Strategy towards Long‐Lasting Zinc Metal Batteries

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(30)

Опубликована: Май 7, 2024

Abstract Regulating the electric double layer (EDL) structure of zinc metal anode by using electrolyte additives is an efficient way to suppress interface side reactions and facilitate uniform deposition. Nevertheless, there are no reports investigating proactive design EDL‐regulating before start experiments. Herein, a functional group assembly strategy proposed for modulating EDL, thereby realizing long‐lasting anode. Specifically, screening ten common groups, N, N‐dimethyl‐1H‐imidazole‐1‐sulfonamide (IS) designed assembling imidazole group, characterized its high adsorption capability on anode, sulfone which exhibits strong binding with Zn 2+ ions. Benefiting from functionalization IS molecules occupy position H 2 O in inner Helmholtz forming molecular protective inhibit O‐induced reactions. Meanwhile, IS, acting as site , promotes de‐solvation ions, facilitating compact Consequently, utilization significantly extending cycling stability Zn||Zn Zn||NaV 3 8 ⋅ 1.5H full cell. This study offers innovative approach EDL regulators high‐performance batteries.

Язык: Английский

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Molecule Engineering of Sugar Derivatives as Electrolyte Additives for Deep‐Reversible Zn Metal Anode

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(35)

Опубликована: Июнь 6, 2024

Abstract The cycling performance of zinc‐ion batteries is greatly affected by dendrite formation and side reactions on zinc anode, particularly in scenarios involving high depth discharge (DOD) low negative/positive capacity (N/P) ratios full cells. Herein, drawing upon principles host–guest interaction chemistry, we investigate the impact molecular structure electrolyte additives, specifically −COOH −OH groups, negative electrode through design. Our findings reveal that molecules containing these groups exhibit strong adsorption onto anode surfaces chelate with Zn 2+ , forming a H 2 O‐poor inner Helmholtz plane. This effectively suppresses promotes dendrite‐free deposition exposed (002) facets, enhancing stability reversibility an average coulombic efficiency 99.89 % introduction Lactobionic acid (LA) additive. Under harsh conditions 92 DOD, Zn//Zn cells stable at challenging current densities 15 mA ⋅ cm −2 . Even N/P ratio 1.3, Zn//NH 4 V O 10 LA high‐capacity retention 73 after 300 cycles, significantly surpassing blank electrolyte. Moreover, conversion type Zn//Br static battery areal (~5 mAh ), sustains improved 700 cycles.

Язык: Английский

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A Wireless Health Monitoring System Accomplishing Bimodal Decoupling Based on an “IS”‐Shaped Multifunctional Conductive Hydrogel

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 6, 2025

Flexible wearable sensors with bimodal functionality offer substantial value for human health monitoring, as relying on a single indicator is insufficient capturing comprehensive physiological information. However, face multiple challenges in practical applications, including mutual interference between various modalities, and integration of excellent mechanical properties, interfacial adhesion, environmental adaptability biocompatibility. Herein, the multifunctional hydrogel, synthesized through radical grafting supramolecular self-crosslinking reactions, exhibits thermal sensitivity (TCR = -1.70% °C-1), high toughness (9.31 MJ m- 3), wide strain range (0-600%), outstanding adhesion strength (36.07 kPa), antifreeze, visualization, water retention, biocompatibility, antibacterial antioxidant capabilities. Leveraging its conductivity, this hydrogel can be applied electroluminescent, triboelectricity, electromyography message encryption. Moreover, fabricated smart temperature monitoring. To avoid two signals, system "IS"-shaped configuration innovatively designed based finite element simulation results. The flexible circuit modules, data transmission form closed-loop platform rehabilitation training patients arthritis or joint surgery. This strategy establishes decoupling self-calibrating utilizing material to accurately detect parameters, advancing electronics personalized medicine.

Язык: Английский

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Interface Regulation and Electrolyte Design Strategies for Zinc Anodes in High-Performance Zinc Metal Batteries

iScience, Год журнала: 2025, Номер 28(2), С. 111751 - 111751

Опубликована: Янв. 9, 2025

Rechargeable zinc metal batteries (ZMBs) represent a promising solution for large-scale energy storage due to their safety, cost-effectiveness, and high theoretical capacity. However, the development of anodes is hindered by challenges such as dendrite formation, hydrogen evolution reaction (HER), low Coulombic efficiency stemming from undesirable interfacial processes in aqueous electrolytes. This review explores various strategies enhance anode performance, focusing on artificial SEI, morphology adjustments, electrolyte regulation, flowing electrolyte. These approaches aim suppress growth, mitigate side reactions, optimize electric double layer (EDL) Zn2+ solvation structures. By addressing these challenges, insights presented here pave way designing high-performance ZMBs, offering directions future research into scalable sustainable battery technologies.

Язык: Английский

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Benchmarking Corrosion with Anionic Polarity Index for Stable and Fast Aqueous Batteries Even in Low‐Concentration Electrolyte

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Despite aqueous electrolyte endowing batteries with the merits of safe operation, low‐cost fabrication, and high ionic conductivity, water‐induced corrosion, including spontaneous chemical electrochemical hydrogen evolution adversely affects lifespan rate capability. There is still a lack selection criteria for benchmarking corrosion behavior qualitatively. Through theoretical simulation, an anionic polarity index (API) tactic proposed to resist by manipulating interfacial solvated water concomitantly, thus realizing stable fast Zn (ZABs). As proof concept, zinc salt 0.5 m bis(4‐hydroxybenzenesulphonate) (Zn(HBS) 2 ) low‐API anion prioritized. Combined in situ spectroscopic analyses reveal that, even low‐concentration electrolyte, reduces inner Helmholtz plane, shielding dissociation. Meanwhile, their entering into solvation sheath 2+ lowers solvent‐separated ion pair, suppressing corrosion. The elaborated API‐screened endows plating kinetics 50 mA cm −2 (119.1 mV polarization), coulombic efficiency 99.8%, dendrite‐free cycling over 1600 h, prolonged 5000 cycles Zn‐V cell. results provide new metrics that can benchmark success ZABs large‐scale energy storage.

Язык: Английский

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Biomass-based electrolyte design for aqueous zinc-ion batteries: Recent advances and future outlook

Energy storage materials, Год журнала: 2024, Номер 66, С. 103244 - 103244

Опубликована: Фев. 1, 2024

Язык: Английский

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