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Simultaneously Enhancing Power Density and Durability of Sliding‐Mode Triboelectric Nanogenerator via Interface Liquid Lubrication
Advanced Energy Materials ( IF 27.8 ) Pub Date : 2020-10-16 , DOI: 10.1002/aenm.202002920
Linglin Zhou 1, 2 , Di Liu 1, 2 , Zhihao Zhao 1, 3 , Shaoxin Li 1, 2 , Yuebo Liu 1, 2 , Lu Liu 1, 2 , Yikui Gao 1, 2 , Zhong Lin Wang 1, 2, 4 , Jie Wang 1, 2
Affiliation  

The sliding‐mode triboelectric nanogenerator (TENG) exhibits higher charge transfer efficiency for extracting mechanical energy than the contact–separation mode TENG, but the energy loss induced by air breakdown as well as the inferior durability seriously limits its practical applications. Here, an effective strategy via interface liquid lubrication is proposed for enhancing output performance of both sliding‐mode alternative current TENG (AC‐TENG) and direct current TENG (DC‐TENG). Due to the improved breakdown field strength requirement and reduced electrostatic field strength in the microgap between the triboelectric layer and electrode, interface liquid lubrication suppresses the interfacial electrostatic breakdown and reduces charge loss after the triboelectrification process, and thus more electrostatic charges are harvested by the AC‐TENG via electrostatic induction and the DC‐TENG via electrostatic breakdown. The maximum output power density of the lubricated sliding‐mode TENG is enhanced by more than 50% (3.45 W m−2 Hz−1) compared to the device without lubrication, and shows excellent durability over more than 500 000 operation cycles. This work provides an effective approach to improve the electric performance and durability of sliding‐mode AC‐TENG and DC‐TENG, which further promotes the practical applications of TENGs.

中文翻译:

通过界面液体润滑同时提高滑动模式摩擦电纳米发电机的功率密度和耐用性

滑模摩擦电纳米发电机(TENG)在提取机械能方面具有比接触-分离模式TENG更高的电荷转移效率,但是由于空气击穿以及劣质的耐久性而导致的能量损失严重限制了其实际应用。在此,提出了一种通过界面液体润滑的有效策略,以提高滑模交流电TENG(AC-TENG)和直流电TENG(DC-TENG)的输出性能。由于改善了击穿电场强度要求,并降低了摩擦电层与电极之间的微间隙中的静电场强度,界面液体润滑可抑制界面静电击穿并减少摩擦起电后的电荷损失,因此,AC-TENG通过静电感应收集更多的静电荷,而DC-TENG通过静电击穿收集更多的静电荷。润滑的滑模TENG的最大输出功率密度提高了50%以上(3.45 W m与没有润滑的设备相比,为−2 Hz -1),并且在超过500 000个操作循环中显示出出色的耐久性。这项工作为提高滑模AC-TENG和DC-TENG的电气性能和耐用性提供了有效的方法,从而进一步促进了TENG的实际应用。
更新日期:2020-12-01
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