Triboelectric Nanogenerator for Sustainable Wastewater Treatment via a Self‐Powered Electrochemical Process

Chen, Shuwen; Wang, Ning; Ma, Long; Li, Tao; Willander, Magnus; Yang, Jie; Cao, Xia; Wang, Zhong Lin

doi:10.1002/aenm.201501778

Cited by 94 publications

(79 citation statements)

References 34 publications

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“…[42,54] On the rotator board, there was a radial array of copper gratings (3.0 cm long with a central angle of 2°). [42,54] On the rotator board, there was a radial array of copper gratings (3.0 cm long with a central angle of 2°).…”

Section: Methodsmentioning

confidence: 99%

Suppressing Lithium Dendrite Growth via Sinusoidal Ripple Current Produced by Triboelectric Nanogenerators

Zhang

Wang

2019

Advanced Energy Materials

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growth with severe electrolyte consumption in most liquid organic electrolytes, especially in carbonate-based ones. [4][5][6][7] To realize viable application of Li metal anodes, continuous effort has been made for years to understand the mechanism of Li deposition and tackle the formation of dendrites. [8][9][10][11] To this end, much work has been devoted in designing Li hosts and substrates, [12][13][14][15] using electrolyte additives [16][17][18][19][20] or solid electrolytes, [21][22][23] and introducing protection films. [24][25][26][27][28][29] For examples, Guo et al. reported that 3D Cu with a large number of charge centers and nucleation sites facilitate the formation of relatively even Li surface. [12] Zhang and co-workers demonstrated a self-healing electrostatic shield mechanism for dendrite-free lithium deposition by controlling Li-ion diffusion on the electrode surface. [20] In recent years, the effect of charging methods on suppressing dendrite growth during Li deposition has attracted increasing attention. [30][31][32] He et al. studied the effectiveness of pulse current charging on dendrite suppression by choosing proper on/ off times of the pulses. [30] Whittingham and co-workers also showed that pulse current charging improves lithium cycling efficiency under diffusion-controlled conditions. [31] Miller et al. employed a coarse-grained simulation model to prove that shorter pulse durations can lead to lower tendency of dendrite formation. [32] This is further confirmed by Hoffmann et al. who demonstrated that 1 ms pulse charging can inhibit the dendrite propagation more effectively than 20 ms pulse or constant current charging. [33] A more recent work by Maraschky and Akolkar indicated that pulsed current may mitigate the concentration depletion of Li ions within the solid electrolyte interphase (SEI), because the diffusion time constant of Li ions has a value of 1 ms for a 10 nm thick SEI and thereby the concentration gradient of Li ions formed across the SEI during charging can be nullified within 1 ms of rest period. [34] The above simulation and experimental studies suggest that interval charging could improve homogeneous nucleation of Li by controlling the diffusion process, therefore high-frequency pulse charging is beneficial for suppressing the growth of Li dendrites.Recently, rotary triboelectric nanogenerators (R-TENGs) originating from contact electrification have been developed and successfully demonstrated as mechanical energy harvesters. [35][36][37] A unique character of R-TENGs is that their voltage and current outputs are high-frequency sinusoidal waveforms. Despite that the effect of sinusoidal ripple current

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Section: Methodsmentioning

confidence: 99%

Suppressing Lithium Dendrite Growth via Sinusoidal Ripple Current Produced by Triboelectric Nanogenerators

Zhang

Wang

2019

Advanced Energy Materials

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“…However, it requires an external power source. There are few studies that demonstrate triboelectric‐powered water treatment . It is notable that water flow can also be used to generate electricity using triboelectric effect and this can be subsequently utilized in electrocatalysis for treatment of water.…”

Section: Introductionmentioning

confidence: 99%

“…However, it requires an external powers ource.T here are few studies that demonstrate triboelectric-powered water treatment. [35][36][37][38][39][40] It is notable that water flow can also be used to generate electricity using triboelectric effect and this can be subsequently utilizedinelectrocatalysis for treatment of water. Here,w ei ntroduce electrocatalytic wastewater treatment powered by aw ater-driven triboelectric generator (WD-TEG).…”

Section: Introductionmentioning

confidence: 99%

A Water‐Driven Triboelectric Generator for Electrocatalytic Wastewater Treatment

Kushwaha

Kumar

et al. 2018

Energy Tech

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Triboelectric generators (TEGs) have been shown to be advantageous at energy harvesting for sensors and portable devices. Here, a water‐driven triboelectric generator (WD‐TEG) powered wastewater treatment reactor that harvests energy from the water flow via the triboelectric effect is introduced. The WD‐TEG is an efficient and green approach towards wastewater treatment. With the electricity generated from WD‐TEG, a degradation efficiency of up to 80 % for estrogenic pollutants, estriol, and 17‐β estradiol is achieved within just 150 min. The effect of water rotation on degradation rate is also investigated. The observed results show that triboelectric coupled electrochemical systems can be promising solution for wastewater treatment.

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“…TENG is particularly advantageous at low operation frequency (<5 Hz) in comparison with the traditional EMG, so that it is most effective for power generation utilizing the actions existing in nature and in our living environment . A variety of TENGs and related self‐powered systems have been reported based on four fundamental working modes that can scavenge mechanical energy from mechanical triggering, human motion, wind blowing, water flowing, and so on . These features make TENG far different from another important member of the nanogenerator family, namely, piezoelectric nanogenerator .…”

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confidence: 99%

Inductor‐Free Wireless Energy Delivery via Maxwell's Displacement Current from an Electrodeless Triboelectric Nanogenerator

et al. 2018

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Wireless power delivery has been a dream technology for applications in medical science, security, radio frequency identification (RFID), and the internet of things, and is usually based on induction coils and/or antenna. Here, a new approach is demonstrated for wireless power delivery by using the Maxwell's displacement current generated by an electrodeless triboelectric nanogenerator (TENG) that directly harvests ambient mechanical energy. A rotary electrodeless TENG is fabricated using the contact and sliding mode with a segmented structure. Due to the leakage of electric field between the segments during relative rotation, the generated Maxwell's displacement current in free space is collected by metal collectors. At a gap distance of 3 cm, the output wireless current density and voltage can reach 7 µA cm and 65 V, respectively. A larger rotary electrodeless TENG and flexible wearable electrodeless TENG are demonstrated to power light-emitting diodes (LEDs) through wireless energy delivery. This innovative discovery opens a new avenue for noncontact, wireless energy transmission for applications in portable and wearable electronics.

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Triboelectric Nanogenerator for Sustainable Wastewater Treatment via a Self‐Powered Electrochemical Process

Cited by 94 publications

References 34 publications

Suppressing Lithium Dendrite Growth via Sinusoidal Ripple Current Produced by Triboelectric Nanogenerators

Suppressing Lithium Dendrite Growth via Sinusoidal Ripple Current Produced by Triboelectric Nanogenerators

A Water‐Driven Triboelectric Generator for Electrocatalytic Wastewater Treatment

Inductor‐Free Wireless Energy Delivery via Maxwell's Displacement Current from an Electrodeless Triboelectric Nanogenerator

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