Host–Guest Complexation of α‐Cyclodextrin and Triiodide Ions for Enhanced Performance of Ionic Thermoelectric Capacitors

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Abstract Ionic thermoelectric materials have emerged as a promising avenue for harvesting low‐grade waste heat, with significant potential applications in wearable electronics. This study introduces novel design ionic capacitors (ITECs) by incorporating host–guest complexation between α–cyclodextrin (α‐CD) and triiodide ions (I 3 − ). The strong α‐CD I confines the diffusion of within cylindrical cavities α‐CD, evidenced UV–vis spectroscopy 13 C‐NMR analysis. confinement enhances ion mobility difference sodium ions, which turn significantly boosts thermopower polyvinyl alcohol/α‐CD/NaI hydrogels. Accordingly, optimized sample achieves an impressive positive 14.24 mV K −1 high power factor 477.2 µW −2 m . Furthermore, stretchable ITEC demonstrates substantial density 5.9 mW When integrated into 3‐leg device, stable thermovoltage 176 is generated under temperature gradient 4.4 K, thus highlighting this system efficient thermal energy harvesting.

Язык: Английский

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Recent Progress in Polymer Gel‐Based Ionic Thermoelectric Devices: Materials, Methods, and Perspectives

Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

Polymer gel-based ionic thermoelectric (i-TE) devices, including thermally chargeable capacitors and thermogalvanic cells, represent an innovative approach to sustainable energy harvesting by converting waste heat into electricity. This review provides a comprehensive overview of recent advancements in i-TE materials, focusing on their Seebeck coefficients, the mechanisms underlying thermodiffusion effects, various strategies employed enhance performance. Gel-based materials show great promise due flexibility, low cost, suitability for flexible wearable devices. However, challenges such as improving conductivity stability redox couples remain. Future directions include enhancing efficiency ionic-electronic coupling developing more robust electrode optimize conversion real-world applications.

Язык: Английский

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Multifunctional moisture-driven energy generator for intergation application and thermal-management

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 687, С. 376 - 385

Опубликована: Фев. 15, 2025

Язык: Английский

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A Dual-Function Poly(vinyl alcohol) Hydrogel for Solar Water Production and Thermoelectric Energy Generation

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

This work addresses the dual challenges of seawater purification and converting low-grade waste heat into electricity, both which are crucial for sustainable resource management. It presents a combined approach that solves problems using self-fabricated device. The device generates temperature gradient through efficient photothermal conversion by placing thermoelectric hydrogels on top hydrogel. Poly(vinyl alcohol) (PVA) is used as matrix hydrogel was selected its biocompatibility ease processing. In order to enhance solar-driven water evaporation efficiency, ball-milled dititanium trioxide (Ti2O3) nanoparticles carbon nanotubes (CNTs) incorporated within PVA matrix. enables rate high 3.22 kg m–2 h–1. Additionally, also serves gels, soaked with K3[Fe(CN)6]/K4[Fe(CN)6] redox pair solution exploit thermogalvanic acid (TGC) effect. arrangement voltage generation reactions at hot cold ends. obtained excellent properties can be characterized ionic Seebeck coefficient (Si) 1.48 mV K–1 power density 9.6 mW after nine were connected in series. As result, this dual-functional simultaneously effectively purifies electricity. Outdoor testing shows daily production 9.2 stable 130 from hydrogels. advances energy technologies opens new avenues innovative applications renewable energy.

Язык: Английский

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Synergistic Optimization of the Thermoelectric Performance of Cu₂₂Sn₁₀S₃₂ through Doping and Nanostructure Engineering

ACS Applied Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 8, 2025

Язык: Английский

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Multifunctional composite ionogel-based sensors for chronic disease surveillance and health monitoring

Composites Part B Engineering, Год журнала: 2025, Номер unknown, С. 112450 - 112450

Опубликована: Март 1, 2025

Язык: Английский

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