Application of lamellar nickel hydroxide membrane as a tunable platform for ionic thermoelectric studies

Raidongia, Kalyan; Gogoi, Raktim; Ghosh, Arnab; Deka, Priyamjeet; Datta, K. K. R.

doi:10.1039/d3mh00479a

Cited by 5 publications

(1 citation statement)

References 54 publications

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“…The urgent need to develop innovative strategies to harvest energy from sustainable resources has led to numerous technological innovations and explorations in recent years. − Extracting electrical energy from naturally abundant, clean, and renewable sources could be a promising solution to address the ever-growing energy and environmental crisis. Recently developed technologies like triboelectric nanogenerators, − piezoelectric nanogenerators, − electret nanogenerators, , electrokinetic nanogenerators, − solar cells, − thermoelectric cells, − and moisture-driven generators ,− have shown great efficiencies in converting environmental energy into electricity. However, many of these devices rely on either time- or location-specific environmental conditions such as sunlight, wind, flowing water, thermal, pressure, or moisture gradients.…”

Section: Introductionmentioning

confidence: 99%

Assembly of Natural Clay Minerals as Highly Robust Evaporation-Driven Power Generator

Bora,

Nath,

Dey

et al. 2024

ACS Appl. Energy Mater.

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Inexhaustible natural resources, such as water, wind, moisture, and ubiquitous natural processes such as evaporation or condensation, could offer optimal energy strategies for a sustainable future. Recently, there has been a surge in interest surrounding evaporation-driven power generators (EDPs), which rely on capillary-driven water flow through permselective nanochannels, followed by evaporation into the atmosphere. Despite huge potential, existing EDPs encounter hurdles like expensive and environmentally unfriendly active materials and complex fabrication processes. Here, we introduce a bilayer membrane composed of two distinct clay minerals, vermiculite (VM) and halloysite nanotube (HNT) clay, to develop an evaporation-driven energy generator capable of generating an open-circuit potential up to 406 mV along with short circuit currents of ∼3.4 μA, resulting in a power density up to 0.85 mW/cm 3 . Due to the affordability, biocompatibility of the materials employed, and simplicity of device fabrication, this energy generator can be upscaled to power low-energy electronic devices and sensors. The all-clay power generator can withstand extreme temperatures; exposure to 180 °C did not affect its power harvesting properties. Individual energy generators are connected in series to power small electronic devices, such as humidity meters, calculators, and LEDs.

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Section: Introductionmentioning

confidence: 99%

Assembly of Natural Clay Minerals as Highly Robust Evaporation-Driven Power Generator

Bora,

Nath,

Dey

et al. 2024

ACS Appl. Energy Mater.

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Synergetic Combination of Bio‐Electrolytes and Bio‐Fluidic Channels as a Novel Resource of Sustainable Energy

Nath,

Bora,

Gogoi

et al. 2024

Adv Funct Materials

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Exploration for sustainable energy resources is essential to minimize the dependence on fossil fuels and to improve environmental parameters. Here, the possibility of utilizing bio‐waste‐derived electrolytes as an electrical energy resource by placing them across semipermeable membranes prepared through parallel stacking of coir fibers is examined. The nanofluidic membrane (d‐CF‐V) prepared by modifying the inner walls of the bio‐fluidic channels with atomically thin layers of vanadium pentoxide (VO) shows excellent perm‐selectivity (t+ = 0.87, with 1000‐fold concentration difference) and electricity conversion efficiency (≈ 28.2%). With simulated sea and river water, the d‐CF‐V yields output energy up to 2.4 W m−2, similarly with mineral acid bases (0.5 m HCl and 0.01 m NaOH), the d‐CF‐V shows an energy output of 11.8 W m−2. The sun‐dried Garcinia morella (Kuji thekera), and charred peels of Musa balbisiana (banana) are used as sustainable sources of bio‐electrolytes, which in combination with permselective d‐CF‐V yielded a power density of ≈1.4 W m−2. By replacing standard Ag/AgCl electrodes with nanomaterials exhibiting contrasting charge transfer activities, oxidized carbon nanotube membrane (o‐CNT) and polyaniline (PANI) membrane the output voltage is enhanced from –127 to –568 mV and current output is increased from 10.2 to 51.5 µA.

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Fabrication of robust and versatile ionic thermoelectric devices of natural clay minerals

Gogoi,

Madeshwaran,

Pratim Das

et al. 2024

Chemical Engineering Journal

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Application of lamellar nickel hydroxide membrane as a tunable platform for ionic thermoelectric studies

Abstract: The recent trend in thermoelectric literature suggests ionic thermoelectric (i-TE) materials are ideal for directly converting low-grade waste heat into electricity. Here, we developed a unique platform for i-TE studies...

Cited by 5 publications

References 54 publications

Assembly of Natural Clay Minerals as Highly Robust Evaporation-Driven Power Generator

Assembly of Natural Clay Minerals as Highly Robust Evaporation-Driven Power Generator

Synergetic Combination of Bio‐Electrolytes and Bio‐Fluidic Channels as a Novel Resource of Sustainable Energy

Fabrication of robust and versatile ionic thermoelectric devices of natural clay minerals

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