Hierarchically Porous Cellulose Membrane via Self‐Assembly Engineering for Ultra High‐Power Thermoelectrical Generation in Natural Convection

Advanced Functional Materials, Год журнала: 2023, Номер 33(52)

Опубликована: Сен. 15, 2023

Abstract Renewable heat‐to‐power conversion based on thermoelectric strategy holds strong prospect toward clean electricity generation in low‐carbon society, which its performance is mainly decided by the temperature gradient. However, achieving a high gradient spontaneously throughout day natural convection remains significant challenge. Herein, cost‐effective, sustainable, and hierarchically porous cellulose membrane (HPCM) created through simple self‐assembly engineering of molecules proposed. Such HPCM boasts unique structure layered micro‐ nanoscaled pores with ≈95% porosity, correspondingly demonstrates >94% solar reflectance >0.9 mid‐infrared emissivity. As result, enables average 14.5 °C 76 mV output voltage module during daytime convection, are 17‐ 30‐time higher than those pristine device, respectively. Note that HPCM‐based consistently generates an 44.2 all day. modules seamlessly integrated into arrays to achieve ≈1.5 V power density ≈3 W m −2 over 90‐d period. The prepared marks advancement environmentally friendly, scalable, viable society.

Язык: Английский

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Anionic entanglement-induced giant thermopower in ionic thermoelectric material Gelatin-CF3SO3K–CH3SO3K

eScience, Год журнала: 2023, Номер 3(5), С. 100169 - 100169

Опубликована: Авг. 5, 2023

Ionic thermoelectric (i-TE) technologies can power Internet of Things (IoT) sensors by harvesting thermal energy from the environment because their large thermopowers. Present research focuses mostly on using interactions between ions and matrices to enhance i-TE performance, but materials benefit utilizing different methods control ion transport. Here, we introduced a new strategy that employs an entanglement effect. A giant thermopower 28 mV K–1 was obtained in quasi-solid-state Gelatin-CF3SO3K-CH3SO3K gel via CF3SO3− CH3SO3− anions. The anionic effect involves complex these two anions, slowing thermodiffusion thus suppressing bipolar effects boosting p-type thermopower. Au@Cu | device with generator mode delivers specific output density 67.2 mJ m–2 K–2 during 2 h discharging. Long-term operation for 10 days shows harvested offers average J per day cyclic working-reactivation model at temperature difference 6 K. results demonstrate is effective achieving gels, so they have excellent potential powering IoT sensors.

Язык: Английский

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The impact of Ni and Zn doping on the thermal durability and thermoelectric variables of pristine CuSe nanoparticles

Materials Advances, Год журнала: 2023, Номер 4(21), С. 5238 - 5251

Опубликована: Янв. 1, 2023

Copper selenide nanomaterials are recognized to possess thermoelectric characteristics, becoming a strong contender unite materials science and energy technology with effective use in practical applications extreme environments.

Язык: Английский

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Nanostructured Cu12+Sb4S13 tetrahedrites prepared by solvothermal synthesis in 1-(2-aminoethyl)piperazine for efficient thermal energy harvesting

Journal of Alloys and Compounds, Год журнала: 2024, Номер 977, С. 173337 - 173337

Опубликована: Янв. 5, 2024

Язык: Английский

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Extremely large Seebeck coefficient of gelatin methacryloyl (GelMA)-based thermogalvanic cells by the dual effect of ion-induced crystallization and nanochannel control

Materials Today Energy, Год журнала: 2024, Номер 42, С. 101546 - 101546

Опубликована: Март 6, 2024

Язык: Английский

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