Gravity-Induced Self-Charging in Carbon Nanotube/Polymer Supercapacitors

Gao, Dan; Liu, Ruhao; Yu, Wei; Luo, Zhiling; Liu, Changhong; Fan, Shanhui

doi:10.1021/acs.jpcc.8b11644

Cited by 24 publications

(19 citation statements)

References 40 publications

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“…The charging mechanism of a supercapacitor allows us to charge it with abundant energy sources available in nature, like light, thermal, vibration, or even gravitational energy [ 185 , 186 , 187 , 188 ]. In the thermal harvesting device family, the potential to have a Soret effect occurring in the electrolyte of the supercapacitor is attractive since it can be compared with having a high Seebeck coefficient in a thermoelectric device.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

“…Another unexpected energy source that may self-charge the supercapacitor is gravitational energy. Dan et al recently reported the gravity-induced self-charging of a CNT/PANI supercapacitor [ 186 ]. The mechanism of the potential buildup is due to the directional ionic movement by gravity or any other exerted mechanical forces.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

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Carbon-Based Quantum Dots for Supercapacitors: Recent Advances and Future Challenges

et al. 2021

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Carbon-based Quantum dots (C-QDs) are carbon-based materials that experience the quantum confinement effect, which results in superior optoelectronic properties. In recent years, C-QDs have attracted attention significantly and have shown great application potential as a high-performance supercapacitor device. C-QDs (either as a bare electrode or composite) give a new way to boost supercapacitor performances in higher specific capacitance, high energy density, and good durability. This review comprehensively summarizes the up-to-date progress in C-QD applications either in a bare condition or as a composite with other materials for supercapacitors. The current state of the three distinct C-QD families used for supercapacitors including carbon quantum dots, carbon dots, and graphene quantum dots is highlighted. Two main properties of C-QDs (structural and electrical properties) are presented and analyzed, with a focus on the contribution to supercapacitor performances. Finally, we discuss and outline the remaining major challenges and future perspectives for this growing field with the hope of stimulating further research progress.

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Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

Carbon-Based Quantum Dots for Supercapacitors: Recent Advances and Future Challenges

et al. 2021

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“…According to our previous work, a kind of sandwich‐like hydrocapacitor based on PANI/CNT electrodes and PVA–H 2 SO 4 gel whose upstream of water flow showed positive potential was studied. The PVA–H 2 SO 4 gel contained PVA and 1 m H 2 SO 4 aqueous solution, and the lone pairs of electron in PVA chains would attract and bind H + first, so the negative ions would be allowed to pass, whereas H + would be rejected when water moves, which is different from the device in this study.…”

Section: Resultsmentioning

confidence: 94%

Energy Harvesting and Storage by Water Infiltration of Eggshell Membrane

2020

Self Cite

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As a domestic waste in daily life, eggshell membrane (ESM) is a unique biomaterial due to its biocompatibility, bioadsorption, and the structure of interwoven and coalescing fibers with many pores which can be utilized in many fields. Herein, a new kind of potentially biocompatible energy harvesting and storage device based on polymer polyaniline/carbon nanotube (PANI/CNT) composite electrodes and ESM is designed. Without external electric power, a single device can extract a maximal output voltage of 0.26 V from water osmosis. The energy can be stored directly and released circularly, and the output voltage can achieve superposition by integrating devices in series. This self‐charging bioelectric phenomenon can be explained by the membrane potential of the ESM induced by water movement. Due to the biocompatible feature of the ESM, and sufficiently high electric output, this study provides a new idea for sustainable and biocompatible energy harvesting and storage devices.

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“…The strategy of electrochemical interfaces customization also provides other avenues for performance improvement. 126 In other words, the all-in-one power device integrating the energy harvesting function of fuel cell with high energy density and the energy storage function of supercapacitor with high power operation has seen rapid development in recent decades. As shown in Figure 7E, the devices employing dual-function electrodes for charge storing and catalysis in place of traditional single-function anode and cathode.…”

Section: 4mentioning

confidence: 99%

Recent advances in highly integrated energy conversion and storage system

Shao

2022

SusMat

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The vigorous development in the field of energy conversion and storage devices directly contributes to the full utilization and convenient use of clean energy. However, some drawbacks of independent energy conversion and storage devices, including unstable, insufficient energy output and dependence on external power supply, are difficult to overcome by self‐optimization, thus, hindering their further development and direct application. Coincidentally, the combination of above two devices can solve these problems, which conforms to their intrinsic needs for development. At the same time, the pursuit of portability and miniaturization also promotes the development of the power system toward a highly integrated direction. Therefore, we introduce several integration modes of energy conversion and storage systems, with emphasis on all‐in‐one power system, possessing the highest integration in this review. From the aspect of device configuration, working mechanisms and their performances, the all‐in‐one power systems based on different energy sources (e.g., mechanical, solar, thermal, and chemical energy) are discussed and analyzed. Finally, the design strategies are summarized and the potential development directions in the future are proposed. This review aims to provide a comprehensive overview of highly integrated energy conversion and storage system, and seeks to point out the opportunities and orientations of future research in this field.

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Gravity-Induced Self-Charging in Carbon Nanotube/Polymer Supercapacitors

Cited by 24 publications

References 40 publications

Carbon-Based Quantum Dots for Supercapacitors: Recent Advances and Future Challenges

Carbon-Based Quantum Dots for Supercapacitors: Recent Advances and Future Challenges

Energy Harvesting and Storage by Water Infiltration of Eggshell Membrane

Recent advances in highly integrated energy conversion and storage system

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