期刊
NANO ENERGY
卷 74, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.104845
关键词
Triboelectric nanogenerators; All-inorganic perovskite; Electron blocking layer; Energy conversion; Charge density
类别
资金
- Director Foundation from Qingdao National Laboratory for Marine Science and Technology [QNLM201702]
- Postdoctoral Research Foundation of China [2019M650231, 2019M663379]
- National Natural Science Foundation of China [61774139, U1802257]
- Natural Science Foundation of Guangdong Province [2019B151502061, 2020A151501082]
- Fundamental Research Funds for the Central Universities [21618409, 21619311]
Triboelectric nanogenerator (TENG) is an advanced energy conversion device to harvest low-frequent mechanical energy from nature, and boosting triboelectric charge density and regulating charge storage behavior are promising solutions to improve their output performances. In this work, rhombus Co(OH)(CO3)(0.5)/Pt/CsPbIBr2 multilayer nanoarray is tailored as a friction layer coupled with poly(vinylidene fluoride) to increase the in-depth distribution of triboelectric charges and to block the combination with induced positive charges on the electrode, the champion perovskite TENG achieves a short-circuit current density of 3.1 mu A cm(-2) , an opencircuit voltage of 243 V and a triboelectric charge density of 9.57 nC cm(-2) , which can instantaneously light up 61 commercial LEDs at per contact. Due to the reduced charge loss in metallic electrode and increased internalspace-charge zones of triboelectric charges in frictional layer assisted by the bottom Co(OH)(CO3)(0.5) and intercalated Pt layers, the tri-layered Co(OH)(CO3)(0.5)/Pt/CsPbIBr2 raises the power density peak by a factor of 4.5, reaching 2.04 W m(-2) at a contact frequency of 0.5 Hz. In addition, the perovskite TENGs demonstrate an excellent stability over 1350 cycles test in ambient atmosphere. This work may provide new insights on manufacturing semiconductor-featured TENG platforms.
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