Ionovoltaic electricity generation over graphene-nanoplatelets: protein-nanofibril hybrid materials

Wang, Lei; Liu, Lianlian; Solin, Niclas

doi:10.1039/d2na00388k

Cited by 3 publications

(2 citation statements)

References 54 publications

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“…After the “ionovoltaic effect” was proposed, more groups were devoted to applying an “ionovoltaic device” to a broader range of applications. − As shown in Figure j, the group of Youn-Sang Kim demonstrated that a silica gel/APTES/POTS active transducer could serve as a type of self-powered pH sensor . In the experiments, the output signals were measured by dropping acid, water, and base droplets.…”

Section: Electricity Generation From Non-hydrovoltaic Technologymentioning

confidence: 99%

Advances and Challenges for Hydrovoltaic Intelligence

2023

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In recent years, excessive exploitation and rapid population growth have posed numerous challenges. The climate crisis is deepening because of the unabated use of fossil fuels and the ascendance of greenhouse gas levels, so there is still an urgent need to seek different clean energy sources and electricity generating methods with the purpose of adjusting energy structures and solving environmental problems. In the ubiquitous hydrologic cycle, at least 60 petawatts (1015 W) energy can be supplied, but little of it has yet been utilized. Nowadays, hydrovoltaic intelligence has emerged and exhibited an ecofriendly concept of electricity generation compared with traditional methods with the rise of nanoscience and nanomaterials. Hence, it provides the prospect of upgrading the mode of water energy use, constructing a renewable energy industry, and alleviating environmental issues. In this review, starting by introducing different types of hydrovoltaic effect mechanismsenergy harvesting based on drawing potential of liquids; energy harvesting based on water evaporation, and energy harvesting based on moisture adsorptionwe summarize the fabrication processes, material classifications, intelligent applications, and representative advances in detail. Moreover, the future development trends of hydrovoltaic intelligence and the challenges for improvement in electrical output are further discussed.

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Section: Electricity Generation From Non-hydrovoltaic Technologymentioning

confidence: 99%

Advances and Challenges for Hydrovoltaic Intelligence

2023

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“…Moreover, evaporation is an omnipresent phenomenon; thus, a large number of energy demands can be met, if harnessed effectively . Nanostructured carbon-based materials like porous carbon films, polypyrrole frameworks, graphene nanoplatelets, graphene oxides, ,, like TiO 2 with charged nanochannels, copper oxide nanowires, − a composite of MoS 2 /SiO 2 acting as a building block, and ZnO nanostructures, have all been employed for harnessing this evaporation-based electricity. A new addition to this category has been organic–inorganic hybrid halide perovskite-based ionovoltaic electricity generator. , …”

Section: Introductionmentioning

confidence: 99%

Manipulating the Crystallization of Tin Halide Perovskites for Efficient Moisture-to-Electricity Conversion

Tiwari,

Sharma,

Borah

et al. 2024

ACS Appl. Mater. Interfaces

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Manipulating the crystallization of perovskite in thin films is essential for the fabrication of any thin-film-based devices. Fabricating tin-based perovskite films from solution poses difficulties because tin tends to crystallize faster than the commonly used lead perovskite. To achieve optimal device performance in solar cells, the preferred method involves depositing tin perovskite under inert conditions using dimethyl sulfoxide (DMSO), which effectively retards the formation of the tin−bromine network, which is crucial for perovskite assembly. We found that under ambient conditions, a DMSO-based tin perovskite salt solution resulted in the formation of a two-phase system, SnBr 4 (DMSO) 2 and MABr, whereas a dimethylformamide-based solution resulted in the formation of vacancy-ordered double perovskite MA 2 SnBr 6 . Humidity is known to solvate MABr to form the solvated ions, and so we used the two-phase system for the application in moisture to electricity conversion. The importance of the presence of the scaffold can be seen with the negligible power output from the vacancy-ordered double perovskite obtained with MA 2 SnBr 6 . We have fabricated a device with two-phase system that can generate an open-circuit potential of 520 mV and a short-circuit current density of 30.625 μA/cm 2 at 85% RH. Also, the device charges a 10 μF capacitor from 150 mV at 51% RH to 500 mV at 85% RH in 6 s at a rate of 52.5 mV/s. Moreover, the output can be scaled by connecting devices in series and parallel configurations. A 527 nm green LED was powered by connecting five devices in series at 75% RH. This indicates a potential for utilizing these moisture-toelectricity conversion devices in powering low-energy requirement devices.

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