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首页> 外文期刊>Advanced energy materials >Boosting Power-Generating Performance of Triboelectric Nanogenerators via Artificial Control of Ferroelectric Polarization and Dielectric Properties
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Boosting Power-Generating Performance of Triboelectric Nanogenerators via Artificial Control of Ferroelectric Polarization and Dielectric Properties

机译：通过人工控制铁电极化和介电特性来提高摩擦电纳米发电机的发电性能

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摘要

Low output current represents a critical challenge that has interrupted the use of triboelectric nanogenerators (TNGs) in a wide range of applications as sustainable power sources. Many approaches (e.g., operation at high frequency, parallel stacks of individual devices, and hybridization with other energy harvesters) remain limited in solving the challenge of low output current from TNGs. Here, a nanocomposite material system having a superior surface charge density as a triboelectric active material is reported. The nanocomposite material consists of a high dielectric ceramic material, barium titanate, showing great charge-trapping capability, together with a ferroelectric copolymer matrix, Poly(vinylidenefluoride-co-trifluoroethylene) (P(VDF-TrFE)), with electrically manipulated polarization with strong triboelectric charge transfer characteristics. Based on a contact potential difference study showing that poled P(VDF-TrFE) has 18 times higher charge attracting properties, a fraction between two components is optimized. Boosting power-generating performance is achieved for 1130 V of output voltage and 1.5 mA of output current with this ferroelectric composite-based TNG, under 6 kgf of pushing force at 5 Hz. An enormously faster charging property than traditional polymer film-based TNGs is demonstrated in this study. Finally, the charging of a self-powering smartwatch with a charging management circuit system with no external power sources is demonstrated successfully.
机译：低输出电流代表了一项严峻的挑战，已经中断了摩擦电纳米发电机（TNG）在广泛的应用中作为可持续电源的使用。在解决来自TNG的低输出电流的挑战方面，许多方法（例如，高频操作，单个设备的并行堆栈以及与其他能量收集器的混合）仍然受到限制。在此，报道了具有优异的表面电荷密度的作为摩擦电活性物质的纳米复合材料系统。纳米复合材料由高介电陶瓷材料钛酸钡（具有出色的电荷捕获能力）以及铁电共聚物基质聚偏二氟乙烯-共三氟乙烯（P（VDF-TrFE））组成，并具有电操纵的极化特性。强大的摩擦电荷转移特性。根据一项接触电势差研究表明，极化P（VDF-TrFE）的电荷吸引性能高18倍，因此优化了两个组件之间的比例。使用这种基于铁电复合材料的TNG，在5 Hz的推力下6 kgf的压力下，对于1130 V的输出电压和1.5 mA的输出电流，可实现增强的发电性能。在这项研究中证明了比传统的基于聚合物膜的TNG更快的充电性能。最后，成功演示了具有充电管理电路系统且无需外部电源的自供电智能手表的充电。

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  • 来源
    《Advanced energy materials》 |2017年第2期|1600988.1-1600988.8|共8页
  • 作者

    Seung Wanchul; Yoon Hong-Joon; Kim Tae Yun; Ryu Hanjun; Kim Jihye; Lee Ju-Hyuck; Lee Jeong Hwan; Kim Sanghyun; Park Yun Kwon; Park Young Jun; Kim Sang-Woo;

  • 作者单位

    Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea;

    Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea;

    Sungkyunkwan Univ SKKU, SKKU Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea;

    Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea;

    Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea;

    Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea|Sungkyunkwan Univ SKKU, SKKU Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea;

    Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea|Sungkyunkwan Univ SKKU, SKKU Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea;

    Samsung Elect, Digital Media & Commun DMC R&D Ctr, Seoul 06765, South Korea;

    Samsung Elect, Digital Media & Commun DMC R&D Ctr, Seoul 06765, South Korea;

    Sungkyunkwan Univ SKKU, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea;

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  • 正文语种 eng
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  • 关键词

    dielectric; ferroelectric; nanocomposite; nanogenerators; triboelectricity;

    机译：电介质;铁电;纳米复合材料;纳米发电机;摩擦电;

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