Since the invention of the triboelectric nanogenerator (TENG), porous polymer materials (PPMs), with different geometries and topologies, have been utilized to enhance the output performance and expand the functionality of TENGs. In this review, the basic characteristics and preparation methods of various PPMs are introduced, along with their applications in TENGs on the basis of their roles as electrodes, triboelectric surfaces, and structural materials. According to the pore size and dimensionality, various types of TENGs that are built with hydrogels, aerogels, foams, and fibrous media are classified and their advantages and disadvantages are analyzed. To deepen the understanding of the future development trend, their intelligent and multifunctional applications in human-machine interfaces, smart wearable devices, and self-powering sensors are introduced. Finally, the future directions and challenges of PPMs in TENGs are explored to provide possible guidance on PPMs in various TENG-based intelligent devices and systems.
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http://dx.doi.org/10.3390/polym15224383 | DOI Listing |
Angew Chem Int Ed Engl
January 2025
KU Leuven, Materials engineering, Kasteelpark Arenberg 44 bus 2450, 3001 LEUVEN Belgium, LEUVEN, BELGIUM.
Traditional polymer solid electrolytes (PSEs) suffer from low Li conductivity, poor kinetics and safety concerns. Here, we present a novel porous MOF glass gelled polymer electrolyte (PMG-GPE) prepared via a top-down strategy, which features a unique three-dimensional interconnected graded-aperture structure for efficient ion transport. Comprehensive analyses, including time-of-flight secondary ion mass spectrometry (TOF-SIMS), Solid-state 7Li magic-angle-spinning nuclear magnetic resonance (MAS-NMR), Molecular Dynamics (MD) simulations, and electrochemical tests, quantify the pore structures, revealing their relationship with ion conductivity that increases and then decreases as macropore proportion rises.
View Article and Find Full Text PDFSoft Matter
January 2025
Department of Chemistry, University of Connecticut, Storrs, Connecticut, USA.
This study introduces a method for synthesizing electrically conductive hydrogels by incorporating a self-assembled, percolating graphene network. Our approach differs from previous approaches in two crucial aspects: using pristine graphene rather than graphene oxide and self-assembling the percolation network rather than creating random networks by blending. We use pristine graphene at an oil-water interface to stabilize a water-in-oil emulsion, successfully creating hydrogel foams with conductivities up to 15 mS m and tunable porosity.
View Article and Find Full Text PDFNatl Sci Rev
February 2025
PCFM Lab and GDHPRC Lab, School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China.
Unstable anode/electrolyte interfaces have significantly hindered the development of lithium (Li) metal batteries under high rates and large capacities. In this study, a versatile reactive layer based on sulfur-selenium crosslinked polyacrylonitrile brushes has been developed by a combined strategy of polymer topology design and chemical crosslinking. The sulfur-selenium crosslinked polyacrylonitrile side-chains can react with Li to generate passivated LiS-LiSe-containing solid electrolyte interphase while 3D lithiophilic porous nanonetworks enable Li penetration, contributing to achieving rapid and uniform Li ion flux and a dendrite-free anode.
View Article and Find Full Text PDFMater Today Bio
February 2025
Department of Orthopedics, The Second Hospital of Jilin University, Changchun, 130041, Jilin, China.
Titanium alloys are widely used in the manufacture of orthopedic prosthesis given their excellent mechanical properties and biocompatibility. However, the primary drawbacks of traditional titanium alloy prosthesis are their much higher elastic modulus than cancellous bone and poor interfacial adhesion, which lead to poor osseointegration. 3D-printed porous titanium alloys can partly address these issues, but their bio-inertness still requires modifications to adapt to different physiological and pathological microenvironments.
View Article and Find Full Text PDFACS Omega
January 2025
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Instrumentation, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
Passive radiative cooling technology serves as an energy-free alternative to traditional cooling systems. Porous polymer structures are frequently employed for radiative cooling by leveraging the refractive index mismatch between the polymer and the pores, enabling the scattering of incoming sunlight. Recently, water-soluble and readily available Sodium chloride (NaCl) particles have been utilized as sacrificial templates for sustainable pore creation.
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