Triboelectric energy harvesting from ambient mechanical sources relies on motion-generated surface charge transfer between materials with different electron affinities. In order to achieve highly efficient energy harvesting perfor-mance, choosing materials with a high surface charge density is crucial, and odd-numbered polyamides (Nylons), such as Nylon-11, are particularly prom-ising due to their strong electron-donating characteristics and the possibility to achieve dipolar alignment leading to high surface potential. The use of Nylon-11 as a material for triboelectric energy harvesting has been rather limited due to the extreme processing conditions required for film fabrication, and the high-voltage poling process required for dipole alignment. However, several methods to achieve “self-poled” Nylon-11 nanowires via facile nanoconfinement techniques have been demonstrated recently, leading to highly efficient Nylon-11 nanowire-based triboelectric nanogenerators. Here, we review the most recent advances in the fabrication of Nylon-11 nanowires, with a focus on how nanoconfinement-based fabrication methods can be used to control phase and crystallinity. These growth methods lead to self-poled nanowires without the requirement for subsequent electrical poling, facilitat-ing their integration into triboelectric energy harvesting devices. Strategies to fabricate Nylon-11 nanowires for applications in triboelectric devices can be extended to other polymeric families as well.
|Publication status||Published - 2020 Dec|
Bibliographical noteFunding Information:
This work was financially supported by the European Research Council through an ERC Starting Grant (ERC-2014-STG-639526, NANOGEN). S. K.-N. and Y. S. C. are grateful for financial support from this same grant. Y. S. C. acknowledges studentship funding through the Cambridge Commonwealth, European and International
(Associate Professor) of Device and Energy Materials in the Department of Materials Science, University of Cambridge. She received a BSc (Honors) in Physics in 2001 from the University of Calcutta, India, followed by MS (2004) and PhD (2009) degrees in Physics from the Indian Institute of Science, Bangalore. Following a postdoctoral appointment at the Department of Materials Science in Cambridge, she was awarded a prestigious Royal Society Dorothy Hodgkin Fellowship in 2012, and an ERC Starting Grant in 2015. Her research focuses on functional nanomaterials for applications in energy, sensing, and biomedicine.
Trust. S. K.-N. would also like to thank Cambridge Display Technology Limited (Company Number 02672530) for supporting this work.
Cambridge Commonwealth, European and International Trust; H2020 European Research Council, Grant/Award Number: ERC-2014-STG-639526.
© 2020 The Authors.
All Science Journal Classification (ASJC) codes
- Chemistry (miscellaneous)
- Physical and Theoretical Chemistry
- Materials Science (miscellaneous)