A Dual-Function Poly(vinyl alcohol) Hydrogel for Solar Water Production and Thermoelectric Energy Generation DOI Creative Commons
Yuhao Wang,

Ching‐Chieh Hsu,

Shao‐Huan Hong

и другие.

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

A Dual-Function Poly(vinyl alcohol) Hydrogel for Solar Water Production and Thermoelectric Energy Generation DOI Creative Commons
Yuhao Wang,

Ching‐Chieh Hsu,

Shao‐Huan Hong

и другие.

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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