Highly increased hydrovoltaic power generation via surfactant optimization of carbon black solution for cellulose microfiber cylindrical generator

Youm, Jiyoon; Lee, Seung Hwan; Cho, Inhee; Jeong, Da Woon; Bang, Junghwan; Park, Hyung Ho; Kim, Min‐Su

doi:10.1016/j.surfin.2023.102853

Cited by 9 publications

(3 citation statements)

References 49 publications

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“…The charge on the particle surface is adjusted to increase the zeta potential, which increases electrostatic repulsion and prevents agglomeration [38]. The charge on these solid surfaces is different for each surfactant, and previous studies have shown that carbon black dispersion depends on the type of surfactant [35]. CACGs are generators in which a CAC is coated with a conductive solution prepared.…”

Section: Fabrication Of a Cellulose Acetate Column Generator (Cacg)mentioning

confidence: 99%

“…CB tends to self-aggregate; therefore, its dispersion should be increased before coating. The surfactant added to stir the CB solution was CTAB, a cationic surfactant, which is suitable because it has a pole opposite to that of CB, which has a negative zeta potential [35,43,44]. The zeta potential is considered evenly distributed over ±30 mV, and the solution prepared in this study comprised CB (0.625 wt.%), CTAB (1.5 wt.%), and DI water, confirmed by the zeta potential analysis value (30.25 mV) shown in Figure 3e.…”

Section: Characterization Of the Conductive Materials Cac And Cacgmentioning

confidence: 99%

“…Evaporation-induced polarization: Another perspective focuses on the evaporation of a solution adhering to the surface of a conductive material. This natural phenomenon leads to polarization at the interface, creating a potential difference within the material and facilitating the flow of electrons [33][34][35]. Pseudo-streaming current: Additionally, research findings have indicated that energy can be harnessed through the pseudo-streaming current that arises from proton movement in conjunction with capillary water flow [28,36].…”

Section: Introductionmentioning

confidence: 99%

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Water-Based Generators with Cellulose Acetate: Uncovering the Mechanisms of Power Generation

Lee,

Baek

et al. 2024

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Power generation technologies based on water movement and evaporation use water, which covers more than 70% of the Earth’s surface and can also generate power from moisture in the air. Studies are conducted to diversify materials to increase power generation performance and validate energy generation mechanisms. In this study, a water-based generator was fabricated by coating cellulose acetate with carbon black. To optimize the generator, Fourier-transform infrared spectroscopy, specific surface area, zeta potential, particle size, and electrical performance analyses were conducted. The developed generator is a cylindrical generator with a diameter of 7.5 mm and length of 20 mm, which can generate a voltage of 0.15 V and current of 82 μA. Additionally, we analyzed the power generation performance using three factors (physical properties, cation effect, and evaporation environment) and proposed an energy generation mechanism. Furthermore, we developed an eco-friendly and low-cost generator using natural fibers with a simple manufacturing process. The proposed generator can contribute to the identification of energy generation mechanisms and is expected to be used as an alternative energy source in the future.

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Section: Fabrication Of a Cellulose Acetate Column Generator (Cacg)mentioning

confidence: 99%

Section: Characterization Of the Conductive Materials Cac And Cacgmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Water-Based Generators with Cellulose Acetate: Uncovering the Mechanisms of Power Generation

Lee,

Baek

et al. 2024

Polymers

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Recent Advances in Fibrous Materials for Hydroelectricity Generation

Ge,

Xu,

Feng

et al. 2024

Nano-Micro Lett.

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Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable development. Hydroelectricity generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy crisis. Fibrous materials with unique flexibility, processability, multifunctionality, and practicability have been widely applied for fibrous materials-based hydroelectricity generation (FHG). In this review, the power generation mechanisms, design principles, and electricity enhancement factors of FHG are first introduced. Then, the fabrication strategies and characteristics of varied constructions including 1D fiber, 1D yarn, 2D fabric, 2D membrane, 3D fibrous framework, and 3D fibrous gel are demonstrated. Afterward, the advanced functions of FHG during water harvesting, proton dissociation, ion separation, and charge accumulation processes are analyzed in detail. Moreover, the potential applications including power supply, energy storage, electrical sensor, and information expression are also discussed. Finally, some existing challenges are considered and prospects for future development are sincerely proposed.

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A novel water electrolysis hydrogen production system powered by a renewable hydrovoltaic power generator

Lee,

Kwon,

Kim

et al. 2024

Chemical Engineering Journal

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Highly increased hydrovoltaic power generation via surfactant optimization of carbon black solution for cellulose microfiber cylindrical generator

Cited by 9 publications

References 49 publications

Water-Based Generators with Cellulose Acetate: Uncovering the Mechanisms of Power Generation

Water-Based Generators with Cellulose Acetate: Uncovering the Mechanisms of Power Generation

Recent Advances in Fibrous Materials for Hydroelectricity Generation

A novel water electrolysis hydrogen production system powered by a renewable hydrovoltaic power generator

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