Ion engines in hydrogels boosting hydrovoltaic electricity generation

He, Na; Wang, Haonan; Li, Fan; Jiang, Bo; Tang, Dawei; Li, Lin

doi:10.1039/d2ee03621e

Cited by 34 publications

(9 citation statements)

References 59 publications

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“…This indicates that the output of the device is stable and has a promising application. 47,48 The battery can be charged by larger devices and the charged battery is used to drive the trolley; see Support Video 1 in the Supporting Information for details.…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure c, the battery is charged by three devices, and the voltage of the battery rose from 0.2 V to a higher level close to 2.5 V and continued to rise steadily. This indicates that the output of the device is stable and has a promising application. , The battery can be charged by larger devices and the charged battery is used to drive the trolley; see Support Video 1 in the Supporting Information for details.…”

Section: Resultsmentioning

confidence: 99%

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Carbon Cloth Functionalized with Carbon Nanotubes for Hydroelectric Power Generation

Wang,

Xiu

et al. 2024

ACS Appl. Nano Mater.

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Since hydroelectric power generation was reported, the low power density has been a key challenge for practical application. Realizing a stable power supply and high power density for hydroelectric power generation is the most important point. In this work, a combined water evaporation and capacitor device incorporating nanomaterials was designed, comprising zinc metal, diaphragms, and carbon cloth (CC) that were scraped and coated with treated carbon nanotubes (CNTs). Carbon nanotubes as nanomaterials greatly increase the evaporation rate and power density of the device, with a stable supply of 300 μW/cm 2 . The electrostatic simulation plots demonstrate that the additional effect of CNTs promotes the transfer of electrons, which is more favorable for the generation of the current potential. The electrostatic simulation plots demonstrate that the additional effect of CNTs promotes the transfer of electrons, which is more favorable to the generation of the current potential. Through simple device integration, the current and other parameters of the device could be flexibly changed according to the actual needs. The current of the device after a series connection could reach a high level of 4 mA. The device has the potential to directly power batteries and other small electronic devices, making it a promising sustainable energy source.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Carbon Cloth Functionalized with Carbon Nanotubes for Hydroelectric Power Generation

Wang,

Xiu

et al. 2024

ACS Appl. Nano Mater.

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“…A typical Mac-fabric unit (1 cm by 2 cm by 0.025 cm) can provide a voltage output of 0.85 V for more than 1 month at 40% relative humidity (RH) and 20°C. The peak power density of Mac-fabric is 0.144 or 11.52 W/m 2 according to the apparent area ( 16 ) and the thickness area of the fabric ( 27 , 28 ), and the volume power density of Mac-fabric is 5.77 × 10 2 W/m 3 , representing a huge improvement in performance and sustainability compared to previous hydrovoltaic generators. We integrated 1920 pieces of Mac-fabrics (total area of 0.384 m 2 ) with the camping tent, which has achieved a peak power output of 55.3 mW to directly power commercially available portable electronics, such as a cell phone, in outdoor environments.…”

Section: Introductionmentioning

confidence: 98%

Phyto-inspired sustainable and high-performance fabric generators via moisture absorption-evaporation cycles

Hu,

Yang,

Wei

et al. 2024

Sci. Adv.

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Collecting energy from the ubiquitous water cycle has emerged as a promising technology for power generation. Here, we have developed a sustainable moisture absorption-evaporation cycling fabric (Mac-fabric). On the basis of the cycling unidirectional moisture conduction in the fabric and charge separation induced by the negative charge channel, sustainable constant voltage power generation can be achieved. A single Mac-fabric can achieve a high power output of 0.144 W/m 2 (5.76 × 10 2 W/m 3 ) at 40% relative humidity (RH) and 20°C. By assembling 500 series and 300 parallel units of Mac-fabrics, a large-scale demo achieves 350 V of series voltage and 33.76 mA of parallel current at 25% RH and 20°C. Thousands of Mac-fabric units are sewn into a tent to directly power commercial electronic products such as mobile phones in outdoor environments. The lightweight (300 g/m 2 ) and soft characteristics of the Mac-fabric make it ideal for large-area integration and energy collection in real circumstances.

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“…8–12 The movement of ions in this process follows the conservation of mass principle and is governed by the Nernst–Planck equation. 13 Despite significant advances, most previous efforts have focused on enhancing evaporation or increasing the number of ions, 14 while overlooking the contribution of diffusion to the ion flux.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired gradient-structured wood interfaces achieving efficient ion diffusion to generate electricity from natural evaporation

Han,

Bai,

Sun

et al. 2024

J. Mater. Chem. A

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Ion engines in hydrogels boosting hydrovoltaic electricity generation

Abstract: Hydrovoltaic electricity generators (HEG), powered by ubiquitous water evaporation, are emerging due to their high spontaneity and continuity. However, the current performance of most HEGs is restricted to 50 μA...

Cited by 34 publications

References 59 publications

Carbon Cloth Functionalized with Carbon Nanotubes for Hydroelectric Power Generation

Carbon Cloth Functionalized with Carbon Nanotubes for Hydroelectric Power Generation

Phyto-inspired sustainable and high-performance fabric generators via moisture absorption-evaporation cycles

Bioinspired gradient-structured wood interfaces achieving efficient ion diffusion to generate electricity from natural evaporation

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