Study of interfacial design for direct-current tribovoltaic generators

Xu, Xinwen; Li, Jun; Tao, Xingling; Yan, Qi; Wu, Hsiao-Ling; Guan, Zhengxin; Liu, Liqiang; Chen, Xiangyu; Ou‐Yang, Wei

doi:10.1016/j.nanoen.2022.106957

Cited by 36 publications

(20 citation statements)

References 56 publications

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“…Tribovoltaic nanogenerator (TVNG) can generate direct-current (DC) due to the tribovoltaic effect, which has great features of low matching resistance, high current density, and continuous output performance, showing its great potential to solve the power supply problem for distributed electronic devices. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] However, the solidsolid hard contact of TVNG will cause the interlocking between atoms on the contact interface, resulting in the increase of friction stress and aggravation of wear problem. [28] The severe wear problem will cause rapid attenuation of output performance, thus, it is difficult for TVNG to realize long-term operation with high current density.…”

mentioning

confidence: 99%

Simultaneously Enhancing Direct‐Current Density and Lifetime of Tribovotaic Nanogenerator via Interface Lubrication

Qiao

Zhao

Zhou

et al. 2022

Adv Funct Materials

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Tribovoltaic nanogenerators (TVNGs) present great properties such as high direct‐current density and continuous output performance, which has great potential to solve the power supply problem for miniaturized electronic devices. However, the severe wear problem of TVNG causes rapid attenuation of current density, which is difficult to realize long‐term operation with high output. In this work, an effective strategy via interface lubrication is proposed to enhance the direct‐current density and lifetime of TVNGs simultaneously. The water‐based graphene oxide solution is utilized as a lubricant, which can increase the sliding surface carriers to enhance current density, and reduce the wear between the copper and the silicon wafer surface due to its excellent lubrication performance. Hence, the TVNG can generate peak current density output ≈775 mA m−2, accompanied with 31 mC m−2 transfer charges density. The TVNG via interface lubrication can maintain high current output after 30 000 cycles. In addition, it can combine with triboelectric nanogenerator to constitute a dual‐type signal sensor, which can be used to monitor bridge vibration and goods’ weight. This study provides an effective method to solve the wear problem of TVNG and improve direct‐current density simultaneously, which will accelerate the practical application of TVNGs in the future.

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mentioning

confidence: 99%

Simultaneously Enhancing Direct‐Current Density and Lifetime of Tribovotaic Nanogenerator via Interface Lubrication

Qiao

Zhao

Zhou

et al. 2022

Adv Funct Materials

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“…We previously developed a flexible tribovoltaic generator based on the sliding motion at metal–semiconducting polymer interfaces, 19 and several recent studies also reported similar devices with different organic semiconductors. 20–22 Still, further research is required. Second, the wearing durability of tribovoltaic devices has not been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Durable flexible direct current generation through the tribovoltaic effect in contact-separation mode

Meng

Pan

et al. 2022

Energy Environ. Sci.

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“…Various sensors and wearable electronic devices are flourishing to meet the needs of the Internet of Things era where everything is connected. [ 1–5 ] Harvesting micromechanical energy such as vibration, wind, and water wave energy, which are widely distributed in the environment to power these electronic devices instead of one‐time energy sources such as fossil fuels is a very clean and sustainable solution. [ 6,7 ] Many traditional energy conversion technologies such as electromagnetic generators, [ 8 ] piezoelectric generators, [ 9 ] and photovoltaic generators [ 10 ] emerge as the times require.…”

Section: Introductionmentioning

confidence: 99%

“…Various sensors and wearable electronic devices are flourishing to meet the needs of the Internet of Things era where everything is connected. [1][2][3][4][5] Harvesting micromechanical energy such as vibration, wind, and water wave energy, which are widely distributed in the environment to power these electronic devices instead of one-time energy sources such as fossil pump effect. Based on both effects, the surface charge density of the FC-TENG could arrive at a higher value of 2.85 mC m −2 in ambient environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Ferromagnetic‐Based Charge‐Accumulation Triboelectric Nanogenerator With Ultrahigh Surface Charge Density

Liu

et al. 2022

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An encouraging micro‐energy harvesting technology, the triboelectric nanogenerator (TENG), has been proven to transfer ambient environmental micro‐energy into electricity, but a low surface charge density results in low performance and limits the practical application of TENG. Here, a ferromagnetic‐based charge‐accumulation TENG (FC–TENG) is proposed with ultrahigh surface charge density and performances. The FC–TENG introduces a ferromagnetic media to enhance the output charge by magnetization effect. Meanwhile, the charge can also be continuously accumulated by the charge pump effects. Based on these two effects, an ultra‐high surface charge density of 2.85 mC m−2 is obtained under ambient atmospheric conditions using an ultra‐thin PET film (3 µm) and deposited Permalloy ferromagnetic electrodes. Meanwhile, the surface charge density of the FC–TENG can always maintain more than 1.5 mC m−2, even if the relative humidity arrives at 90%. This work provides a prospective technical mode to enhance the surface charge density of TENG, which would shed a new insight and guidance on the high‐performance TENG for various environmental conditions such as the ocean, industrial manufacturing, aerospace, and rail traffic.

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Study of interfacial design for direct-current tribovoltaic generators

Cited by 36 publications

References 56 publications

Simultaneously Enhancing Direct‐Current Density and Lifetime of Tribovotaic Nanogenerator via Interface Lubrication

Simultaneously Enhancing Direct‐Current Density and Lifetime of Tribovotaic Nanogenerator via Interface Lubrication

Durable flexible direct current generation through the tribovoltaic effect in contact-separation mode

Ferromagnetic‐Based Charge‐Accumulation Triboelectric Nanogenerator With Ultrahigh Surface Charge Density

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