Fullerene‐Enhanced Triboelectric Nanogenerators,Advanced Materials Technologies

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Fullerene‐Enhanced Triboelectric Nanogenerators
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2020-06-18 , DOI: 10.1002/admt.202000295
Prakash Parajuli _{1,

2} , Bipin Sharma _{1,

2} , Herbert Behlow _{1,

2} , Apparao M. Rao _{1,

2}

Affiliation

Triboelectric nanogenerators (TENGs) convert mechanical energy, e.g., from human motions, into electrical power. The mechanical force brings two triboelectric materials with different electron affinities into contact, resulting in a voltage that can be used to power a device. Although progress has been made in identifying high‐performance triboelectric materials (e.g., polytetrafluoroethylene, MXenes, polyethylene terephthalate (PET), graphene‐impregnated polymers, and polyimide), the search for better triboelectric materials continues in order to harvest mechanical energy efficiently. Here, it is demonstrated that the output performance of a TENG can be enhanced by coating its triboelectric material surface with an important class of carbons, viz., zero‐dimensional C₆₀ fullerene, which is known for its high electron affinity. Specifically, a C₆₀ fullerene‐based TENG (F‐TENG) is fabricated and evaluated that supports a high open‐circuit voltage of ≈1.6 kV, short‐circuit current of ≈100 µA, instantaneous peak power density of ≈38 W m⁻², and charging of a 1 µF capacitor to 180 V under 8 min. Because of the superior power output of the F‐TENG, a digital watch can be powered continuously in real‐time, a task that cannot be performed with a similar‐sized TENG comprising PET and polyimide. Notably, a novel methodology based on the analysis of the TENG output waveforms is presented for determining the triboelectric charge, which can then be used to rank the electrode material in the tribolelectric series.

中文翻译：

富勒烯增强型摩擦电纳米发电机

摩擦电纳米发电机（TENGs）将机械能（例如来自人体运动的能）转换为电能。机械力使具有不同电子亲和力的两种摩擦电材料接触，从而产生可用于为设备供电的电压。尽管在识别高性能摩擦电材料（例如，聚四氟乙烯，MXenes，聚对苯二甲酸乙二醇酯（PET），石墨烯浸渍的聚合物和聚酰亚胺）方面已取得进展，但仍在继续寻求更好的摩擦电材料以有效地收集机械能。在此证明，通过在摩擦材料表面涂上重要的一类碳（零维C _60），可以提高TENG的输出性能。富勒烯，以其高电子亲和力而闻名。具体而言，制造并评估了基于C ₆₀富勒烯的TENG（F-TENG），该TENG支持约1.6 kV的高开路电压，约100 µA的短路电流，约38 W m的瞬时峰值功率密度^{- 2}，并在8分钟内将1 µF电容器充电至180V。由于F-TENG的强大功率输出，可以实时为数字手表连续供电，而使用包含PET和聚酰亚胺的类似尺寸的TENG不能完成这项任务。值得注意的是，提出了一种基于TENG输出波形分析的新颖方法来确定摩擦电荷，然后可以使用该方法对电极材料进行摩擦电串联排序。

更新日期：2020-08-10

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