Mechanoelectric transduction of ionic polymer-graphene compositesensor with ionic liquid as electrolyte

0505442 - FZÚ 2020 RIV CH eng J - Journal Article
He, Q. - Vokoun, David - Stalbaum, T. - Kim, K.J. - Fedorchenko, Alexander I. - Zhou, X. - Yu, M. - Dai, Z.
Mechanoelectric transduction of ionic polymer-graphene compositesensor with ionic liquid as electrolyte.
Sensors and Actuators A - Physical. Roč. 286, Feb (2019), s. 68-77. ISSN 0924-4247. E-ISSN 1873-3069
R&D Projects: GA ČR GB14-36566G
Institutional support: RVO:68378271 ; RVO:61388998
Keywords : ionic polymer-graphene film composite * mechanoelectric transduction * graphene film * ionic liquid * sensor
OECD category: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; Thermodynamics (UT-L)
Impact factor: 2.904, year: 2019
Method of publishing: Limited access
https://doi.org/10.1016/j.sna.2018.12.014

An ionic polymer-graphene film composite (IPGC) sensor comprised of an ionic polymer membrane sandwiched between two graphene electrodes was fabricated and a physical mechanoelectrical model was presented. Experimental verification indicates that as the frequency of input displacement increases from 2 to 10 Hz, the voltage output increases from 2.95 to 13.56 mV under the peak-to-peak amplitude of sinusoidal vibration. Compared with conventional ionic polymer metal composite (IPMC) sensor, IPGC in this work generates 2.74∼4.52 times higher output voltage, which is attributed to high initial cation concentration (∼4250 mol/m3). IPGC shows the relatively stable mechanoelectrical property because of the crackless graphene electrode and the stable ionic liquid. Model analysis shows a fair agreement between the simulated and measured data. This paper provides the understanding of the transduction mechanism.
Permanent Link: http://hdl.handle.net/11104/0296942