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Polyoxometalates‐Based Semi‐flexible Metal‐Semiconductor Triboelectric Nanogenerators for Low Frequency and Small Amplitude Mechanical Energy Harvesting
Author(s) -
Ma Chunhui,
Wang Ting,
Li Fengrui,
Guan Hongyu,
Chen Weichao,
Zhang Lu,
Zheng Yuxiao,
Wang Chunlei,
Tang Qingxin,
Chen Weilin
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202100719
Subject(s) - triboelectric effect , materials science , semiconductor , polymer , metal , nanotechnology , optoelectronics , mechanical engineering , electrical engineering , composite material , metallurgy , engineering
The development of high‐performance and low‐cost durable triboelectric nanogenerators (TENGs) is essential for converting mechanical energy into electrical energy. Many organic polymer friction materials used widely have thermal stability problems, which makes TENGs with semiconductors as friction materials stand out. Here, we report a semi‐flexible TENG based on metal and TiO 2 modified by polyoxometalates (POMs) as pure inorganic friction materials. Six different POMs are firstly selected to modify the friction materials of TENGs, and the output performance of TENGs with different POMs‐modified semiconductors and different metals as friction materials are tested. Compared with the unmodified TENGs, the open‐circuit voltage ( V OC ) of the optimal Ag‐K 6 P 2 Mo 18 O 62 (P 2 Mo 18 )/TiO 2 TENG device is increased by more than 4 times, which is mainly attributed to the strong electron‐accepting and storage capabilities of POMs. This study has demonstrated that TENGs modified by POMs have potential application prospects and provided a new method for increasing the electrical output of TENGs.