Tin disulfide piezoelectric nanogenerators for biomechanical energy harvesting and intelligent human-robot interface applications

• Published in: Nano energy Vol. 75; p. 104879
• Main Authors: Yang, Po-Kang, Chou, Sui-An, Hsu, Ching-Hung, Mathew, Roshan Jesus, Chiang, Kuan-Hsuan, Yang, Jung-Yen, Chen, Yit-Tsong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2020
• Subjects: Enabling sensing technology; Energy harvesting; Human-machine interface; Piezoelectricity; Tin disulfide; Two-dimensional materials; Two-dimensional materials; Enabling sensing technology; Tin disulfide; Piezoelectricity; Energy harvesting; Human-machine interface
• ISSN: 2211-2855
• DOI: 10.1016/j.nanoen.2020.104879

Tin disulfide nanosheets (SnS2 NSs), belonging to a new family of layered metal dichalcogenides, have evoked considerable attention in multidisplinary scientific applications because of their high electron mobility, excellent chemical stability, and wide accessibility to optoelectronic devices. However, despite the prediction of SnS2 to possess excellent piezoelectricity, only very few attempts have been made to investigate the electromechanical characterisitcs of SnS2. Herein, we report the experimental investigation of the intrinsic piezoelectricity of SnS2 NSs, which were synthesized with a facile chemical vapor deposition (CVD) method. The prominent inverse piezoelectricity of SnS2 NSs was measured via piezoresponse force microscpoy (PFM). To further evaluate the piezoelectric performance, SnS2 NSs were integrated into a piezoelectric nanogenerator (PENG) device to display the energy harvesting and active sensing capabilities. Most importantly, the SnS2 PENG device was utilized to explore the synchronous human-robot control of a smart sign language system, which demonstrates great potential for the future applications in human-machine interface and enabling sensing technology. Single-crystalline few-layered SnS2 nanosheets were synthesized via a facile chemical vapor deposition (CVD) method. The intrinsic piezoelectricity of the CVD-grown SnS2 nanosheets was characterized by piezoresponsive force microscopy (PFM). The SnS2 nanosheets were further integrated into a piezoelectric nanogenerator (PENG) device for diverse applications, such as self-powered biomechanical energy harvester, human-machine interface control, and enabling robotic sensing technology.s. [Display omitted] •Single-crystalline few-layered SnS2 nanosheets were synthesized via a facile chemical vapor deposition (CVD) method.•The piezoelectricity of the CVD-grown SnS2 nanosheets characterized by piezoresponsive force microscopy is reported.•A SnS2-piezoelectric nanogenerator (PENG) holds great potential for the future human-machine interface applications.