Highly porous polymer cryogel based tribopositive material for high performance triboelectric nanogenerators

Haider, Zeeshan; Haleem, Abdul; Ahmad, Rafi u Shan; Farooq, Umar; Shi, Lin; Claver, Uzabakiriho Pierre; Memon, Kashan; Fareed, Azam; Khan, Irfan; Mbogba, Momoh Karmah; Hossain, Safwan; Farooq, Faryal; Ali, Wajahat; Abid, Muhammad; Qadir, Akeel; He, Wei‐Dong; Luo, Jikui; Zhao, Gang

doi:10.1016/j.nanoen.2019.104294

Cited by 50 publications

(15 citation statements)

References 81 publications

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“…[22] Among these generators, the TENG can be fabricated by using a wide variety of materials, and it carries several advantages such as low cost, easy fabrication, high output voltage, high conversion efficiency, and a broad application area. [23][24][25][26][27][28][29][30] However, there are some challenges to use TENG effectively as a power supplier for electronic devices. The TENG cannot operate in the absence of physical movements due to its discrete peak-type of electrical output [31] and a low output current from the high internal resistance.…”

Section: Boosting a Power Performance Of A Hybrid Nanogenerator Via Fmentioning

confidence: 99%

Boosting a Power Performance of a Hybrid Nanogenerator via Frictional Heat Combining a Triboelectricity and Thermoelectricity toward Advanced Smart Sensors

Kim

Byun

et al. 2020

Adv Materials Technologies

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The demand for a well‐equipped healthcare system is increasing due to the requirement of instant treatment in emergency situations. Particularly, patients are advised to employ fall‐detection sensors and touch‐activated emergency alarms to reduce the mortality rate arising from unexpected falls and emergency conditions. Herein, smart sensors are successfully developed by scavenging the human motions and heat energy with the combination of a triboelectric nanogenerator (TENG) and a thermoelectric generator (TEG). The frictional heat energy produced from the contact and separation of TENG can be utilized as an input source for TEG. Thus, the hybrid tribo‐thermoelectric nanogenerator (HTTNG) generates two electrical outputs with a single primary input. As evidence of this, the flexible HTTNG delivers high output due to the synergistic effect of two generators, that is, through the high output voltage and current in TENG and TEG, respectively. The feasibility of HTTNG as a touch‐activated emergency alarm and a human fall‐detection sensor is successfully demonstrated. Furthermore, the HTTNG can be a promising self‐powered sensing device without any additional power source as well as a power supplier in the Internet of Things era. This hybrid nanogenerator can pave the way for efficient utilization in healthcare systems.

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Section: Boosting a Power Performance Of A Hybrid Nanogenerator Via Fmentioning

confidence: 99%

Boosting a Power Performance of a Hybrid Nanogenerator via Frictional Heat Combining a Triboelectricity and Thermoelectricity toward Advanced Smart Sensors

Kim

Byun

et al. 2020

Adv Materials Technologies

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“…26 High-porous cryogel films based on ultraviolet radiation and dissolution processes were synthesized by a new method and used as tribopositive material for TENG production. 27 On the other hand, with the spiral structure designed by separating the electrodes into smaller contacts, higher output performance can be achieved in TENGs, and it is possible to minimize the deformations by supporting the structure with soft materials (rubber, etc.). 28 The use of spongy and porous materials, nanofibers and composite materials is not very effective in improving the performance of TENG.…”

Section: Introductionmentioning

confidence: 99%

Aerogel based nanogenerators: Production methods, characterizations and applications

Korkmaz

Kariper

2020

Int J Energy Res

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Thanks to the nanogenerators known as state-of-the-art energy collecting devices, the mechanical energy in every environment can be converted into electrical energy. Some studies on the improvement of the performance of triboelectric and piezoelectric nanogenerators that convert mechanical energy to electrical energy revealed that aerogels brought significant outcomes in the development of nanogenerators. Aerogels, the lightest solid material known, provides a large surface area as the contact area of the nanogenerators, its adjustable porosity allows to improve electronic properties of the nanogenerators, showing its significance in electronics once again. At the same time, the use of aerogels, which is the best candidate in terms of flexibility and mechanical strength required in wearable electronics, in the production of nanogenerators continues to attract the attention of researchers. This study includes an introduction of aerogels and the discussions on the studies involving aerogel based nanogenerators. In the paper, the studies in the literature, focusing on the advantages of aerogel based nanogenerators and their current applications were collected. Three different types of aerogel nanogenerators production were observed to be produced. They are all based on aerogel electrodes produced from different materials, and the paper outlines them with basic working principles. This classification of aerogel nanogenerators and outlining the results will make a significant contribution to the literature and will be a good source for researchers who want to work in this field.

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“…Therefore, it is extremely important for the sensor to have self‐generating signals that can effectively support their work and many studies have been devoted to this aspect . It is well accepted that various available mechanical driving forces between materials have the characteristics of continuity, independence, extensiveness, and daily activities ranging from walking to running, from macroscopic large movements to small facial movements, accompanied by mechanical deformation, but it is often neglected and wasted due to its scattered form and low frequency . In regard of this, self‐driven sensors have been developed to convert the mechanical driving force into pulsed voltage signals, by analyzing the output electrical signals; information such as the pressure and frequency of the external driving force is obtained without external power sources.…”

Section: Introductionmentioning

confidence: 99%

“…Peng et al chose polyamide 66 and polypropylene nonwoven fabrics as triboelectric materials, and the response and recovery time of sensors were about 44.4 and 84.5 ms. It is generally accepted that the ideal wearable sensors should be of low cost, lightweight, and capable of mass production[2a,8b] in addition to good response performance and outstanding durability [23,26b,30]…”

Section: Introductionmentioning

confidence: 99%

Flexible Textile‐Based Self‐Driven Sensor Used for Human Motion Monitoring

Wang

2020

Energy Tech

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Flexible self‐driven sensors can respond to tiny vibrations such as sound waves, blood pressure, heartbeat, etc., and have attracted great attention for their promising applications in wearable devices, in which the electrical signals are triggered by mechanical strength and the coupling of triboelectric and electrostatic induction. Herein, flexible self‐driven sensors assembled with a chitosan (CS) film and polydimethylsiloxane (PDMS) film selected as positive and negative triboelectric layers, respectively, are presented. Conductive fabrics function as electrodes, and polyurethane (PU) foams function as flexible substrates which have advantages of simple integrated structures, ease of manufacturing, and relatively low costs. Tests confirm that the sensor has outstanding flexibility, excellent response performance, and remarkable stability. It is used for real‐time monitoring of human movements, and is based on textiles, providing wearing comfort and is operated without any external power sources as the output voltage of about 30 V can support it. Owing to these advantages, it is believed that a new and convenient strategy to fabricate a novel sensor based on available materials used for human activity detecting and healthcare monitoring is achieved.

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Highly porous polymer cryogel based tribopositive material for high performance triboelectric nanogenerators

Cited by 50 publications

References 81 publications

Boosting a Power Performance of a Hybrid Nanogenerator via Frictional Heat Combining a Triboelectricity and Thermoelectricity toward Advanced Smart Sensors

Boosting a Power Performance of a Hybrid Nanogenerator via Frictional Heat Combining a Triboelectricity and Thermoelectricity toward Advanced Smart Sensors

Aerogel based nanogenerators: Production methods, characterizations and applications

Flexible Textile‐Based Self‐Driven Sensor Used for Human Motion Monitoring

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