Thermoelectric Conversion Eutectogels for Highly Sensitive Self-Powered Sensors and Machine Learning-Assisted Temperature Identification DOI

Lingshuang Kong,

Huiming Ning, Miao Du

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Endowing flexible sensors with self-powering capabilities is of significant importance. However, the thermoelectric conversion gels reported so far suffer from limitations insufficient flexibility, signal distortion under repetitive deformation, and comprehensive performance, which seriously hinder their wide application. In this work, we designed prepared eutectogels by an ionic liquid a polymerizable deep eutectic solvent (PDES), exhibit good mechanical properties, adhesion, excellent response performance. The Seebeck coefficient (Si) can reach 30.38 mV K-1 at temperature difference 10 K. To amplify self-powered performance individual gel units, assembled them into arrays further sensors. combination K-means clustering algorithm machine learning filter out noise traditional improve consistency signals, thereby enabling prediction absolute conditions or 20 K difference. This study also demonstrates potential application these in sensing.

Language: Английский

Evolutionary Reinforcement of Polymer Networks: A Stepwise‐Enhanced Strategy for Ultrarobust Eutectogels DOI
Ning Tang, Yujia Jiang,

Kailun Wei

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(6)

Published: Nov. 8, 2023

Abstract Gel materials are appealing due to their diverse applications in biomedicine, soft electronics, sensors, and actuators. Nevertheless, the existing synthetic gels often plagued by feeble network structures inherent defects associated with solvents, which compromise mechanical load‐bearing capacity cast persistent doubts about reliability. Herein, combined attractive deep eutectic solvent (DES), a stepwise‐enhanced strategy is presented fabricate ultrarobust eutectogels. It focuses on continuous modulation optimization of polymer networks through complementary annealing exchange processes, drives progressive increase both quantity mass interconnected chains at microscopic scale, hence contributing evolutionary enhancement structure. The resultant eutectogel exhibits superb properties, including record‐breaking strength (31.8 MPa), toughness (76.0 MJ m −3 ), Young's modulus (25.6 together exceptional resistance ability tear crack propagation. Moreover, this able be further programmed photolithography situ create patterned for imparting specific functionalities. Enhanced its broad applicability various DES combinations, poised serve as crucial template methodology future development robust gels.

Language: Английский

Citations

60
Mxene hybrid conductive hydrogels with mechanical flexibility, frost-resistance, photothermoelectric conversion characteristics and their multiple applications in sensing DOI

Mengjuan Hou,

Maolin Yu, Weiling Liu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149299 - 149299

Published: Feb. 3, 2024

Language: Английский

Citations

60
High Strength and Toughness Polymeric Triboelectric Materials Enabled by Dense Crystal-Domain Cross-Linking DOI
Chenchen Cai, Xiangjiang Meng, Lixin Zhang

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: 24(12), P. 3826 - 3834

Published: March 18, 2024

Lightweight, easily processed, and durable polymeric materials play a crucial role in wearable sensor devices. However, achieving simultaneously high strength toughness remains challenge. This study addresses this by utilizing an ion-specific effect to control crystalline domains, enabling the fabrication of triboelectric material with tunable mechanical properties. The dense crystal-domain cross-linking enhances energy dissipation, resulting boasting both tensile (58.0 MPa) (198.8 MJ m–3), alongside remarkable 416.7% fracture elongation 545.0 MPa modulus. Leveraging these properties, is successfully integrated into self-powered devices, real-time feedback on human joint movement. work presents valuable strategy for overcoming strength-toughness trade-off materials, paving way their enhanced applicability broader use diverse sensing applications.

Language: Английский

Citations

41
Compliant Iontronic Triboelectric Gels with Phase-Locked Structure Enabled by Competitive Hydrogen Bonding DOI Creative Commons
Guoli Du, Yuzheng Shao, Bin Luo

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 9, 2024

Rapid advancements in flexible electronics technology propel soft tactile sensing devices toward high-level biointegration, even attaining perception capabilities surpassing human skin. However, the inherent mechanical mismatch resulting from deficient biomimetic properties of materials poses a challenge to application wearable human-machine interaction. Inspired by innate biphasic structure subcutaneous tissue, this study discloses skin-compliant iontronic triboelectric gel via phase separation induced competitive hydrogen bonding. Solvent-nonsolvent interactions are used construct bonding systems trigger separation, and soft-hard alternating phase-locked confers with Young's modulus (6.8-281.9 kPa) high tensile (880%) compatible The abundance reactive hydroxyl groups gives excellent tribopositive self-adhesive (peel strength > 70 N m

Language: Английский

Citations

36
Polyvinyl Alcohol (PVA)-Based Hydrogels: Recent Progress in Fabrication, Properties, and Multifunctional Applications DOI Open Access
Xiaoxu Liang, Hai‐Jing Zhong, Hongyao Ding

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(19), P. 2755 - 2755

Published: Sept. 29, 2024

Polyvinyl alcohol (PVA)-based hydrogels have attracted significant attention due to their excellent biocompatibility, tunable mechanical properties, and ability form stable three-dimensional networks. This comprehensive review explores the recent advancements in PVA-based hydrogels, focusing on unique fabrication strategies, multifunctional applications. Firstly, it discusses various facile synthesis techniques, including freeze/thaw cycles, chemical cross-linking, enhancement which led enhanced strength, elasticity, responsiveness external stimuli. These improvements expanded applicability of critical areas such as biomedical, environmental treatment, flexible electronics, civil engineering, well other emerging Additionally, integration smart functionalities, self-healing capabilities multi-responsiveness, is also examined. Despite progress, challenges remain, optimizing stability under varying conditions addressing potential toxicity cross-linkers. The concludes by outlining future perspectives, emphasizing fields like regenerative medicine, sustainability, advanced manufacturing. It underscores importance interdisciplinary collaboration realizing full these versatile materials address pressing societal challenges.

Language: Английский

Citations

35
An Ultrahigh‐Modulus Hydrogel Electrolyte for Dendrite‐Free Zinc Ion Batteries DOI Open Access
Zong‐Ju Chen, Tianyu Shen, Xiong Xiao

et al.

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

Published: Nov. 14, 2024

Abstract Quasi‐solid‐state aqueous zinc ion batteries suffer from anodic dendrite growth during plating/stripping processes, impeding their commercial application. The inhibition of dendrites by high‐modulus electrolytes has been proven to be effective. However, hydrogel are difficult achieve high modulus owing inherent water contents. This work reports a electrolyte with ultrahigh that can overcome the stress through mechanical suppression effect. By combining wet‐annealing, solvent‐exchange, and salting‐out processes tuning hydrophobic crystalline domains, is obtained substantial content (≈70%), (198.5 MPa), toughness (274.3 MJ m −3 ), zinc‐ion conductivity (28.9 mS cm −1 which significantly outperforms previously reported poly(vinyl alcohol)‐based hydrogels. As result, exhibits excellent dendrite‐suppression effect achieves stable performance in Zn||Zn symmetric (1800 h cycle life at 1 mA −2 ). Moreover, Zn||V 2 O 5 pouch display cycling operate stably even under extreme conditions, such as large bending angle (180°) automotive crushing. provides promising approach for designing mechanically reliable advanced batteries.

Language: Английский

Citations

22
Hierarchically aligned heterogeneous core-sheath hydrogels DOI Creative Commons

Zhao Xu,

Hong Chen, Huai‐Bin Yang

et al.

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

Published: Jan. 4, 2025

Natural materials with highly oriented heterogeneous structures are often lightweight but strong, stiff tough and durable. Such an integration of diverse incompatible mechanical properties is desired for man-made materials, especially weak hydrogels which lack high-precision structural design. Herein, we demonstrate the fabrication hierarchically aligned consisting a compactly crosslinked sheath porous core alignments nanofibrils at multi-scales by sequential self-assembly assisted salting out method. The produced hydrogel offers ultrahigh among reported hydrogels, elastomers natural including toughness 1031 MJ · m-3, strength 55.3 MPa, strain 3300%, stiffness 6.8 fracture energy 552.7 kJ m-2 fatigue threshold 40.9 m-2. Furthermore, such strong facilely achieves stable regeneration rapid adhesion owing to crystallized network structure. regenerated specimen presents reinforced strength, resistance over 10 cycles. This work provides simple method produce bioinspired heterostructures combinational real applications. have favorable properties, challenging replicate in artificial materials. Here, authors report development strength.

Language: Английский

Citations

9
Coordinatively stiffen and toughen polymeric gels via the synergy of crystal-domain cross-linking and chelation cross-linking DOI Creative Commons
Jipeng Zhang,

Miaoqian Zhang,

Huixiong Wan

et al.

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

Published: Jan. 2, 2025

Language: Английский

Citations

5
Small functional hydrogels with big engineering applications DOI
Yifan Liu, Zhiguang Guo

Materials Today Physics, Journal Year: 2024, Volume and Issue: 43, P. 101397 - 101397

Published: March 19, 2024

Language: Английский

Citations

15
Mechanical Regulation of Polymer Gels DOI
Chenggong Xu,

Yi Chen,

Siyang Zhao

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(18), P. 10435 - 10508

Published: Sept. 16, 2024

The mechanical properties of polymer gels devote to emerging devices and machines in fields such as biomedical engineering, flexible bioelectronics, biomimetic actuators, energy harvesters. Coupling network architectures interactions has been explored regulate supportive characteristics gels; however, systematic reviews correlating mechanics interaction forces at the molecular structural levels remain absent field. This review highlights engineering gel a comprehensive mechanistic understanding regulation. Molecular alters architecture manipulates functional groups/moieties level, introducing various permanent or reversible dynamic bonds dissipative energy. usually uses monomers, cross-linkers, chains, other additives. Structural utilizes casting methods, solvent phase regulation, mechanochemistry, macromolecule chemical reactions, biomanufacturing technology construct tailor topological structures, heterogeneous modulus compositions. We envision that perfect combination may provide fresh view extend exciting new perspectives this burgeoning also summarizes recent representative applications with excellent properties. Conclusions are provided from five aspects concise summary, mechanism, biofabrication upgraded applications, synergistic methodology.

Language: Английский

Citations

14