Enhancing the Output Performance of Triboelectric Nanogenerator via Grating‐Electrode‐Enabled Surface Plasmon Excitation

Abstract

performance and relatively low cost have been demonstrated as a leading candidate for numerous applications in energy harvesting and self-powered sensing. [1][2][3][4][5] It plays an increasingly important role with the fast depletion of fossil fuels. As an energy harvester, the output characteristic of the TENGs is the key consideration, which involves two main aspects: the surface charge density [6][7][8] and the output impedance. [9,10] Till now, studies have been conducted on the improvement of the surface charge density, such as surface functionalization techniques including micropatterning surface, [11][12][13][14][15][16][17][18][19][20] plasma treatment, [21] or adding chemical functional groups. [22][23][24][25] Especially substantial researches on the TENGs have concentrated on making triboelectric layers into both micro-and nanoscale to achieve increased surface areas and roughness. [26] However, there is a lack of effective means to reduce the output impedance.Plasmonic energy conversion proposed as a high efficiency scheme to electron-hole separation opens up a wide range of applications in the field of subwavelength optics, [27] data storage, [28] nonlinear optics, [29] solar cells, [30] and Adv. Energy Mater. 2019, 9, 1902725 www.advenergymat.de www.advancedsciencenews.com

Progress inTENGtechnology—A journey from energy harvesting to nanoenergy and nanosystem

“…As a promising technique for energy scavenging from the ambient environment, TENG has shown great advantages while serving as a power supply for wireless sensor networks (WSN) and IoT with simple structure, relatively high efficiency of power density, cost‐efficiency, and good reliability 96,108,130,257 . However, the energy supplied only by TENG is still not enough due to insufficient sustainable power output and also low output current caused by the intrinsic characteristics of TENG 169,258,259 . Therefore, to increase the output power density and utilize various ambient energy sources more effectively, the integration of other energy scavenging mechanisms with triboelectric has been widely explored in the past few years, including piezoelectric, thermoelectric, solar cell, and EM 116,260‐262 .…”

Dynamical charge transfer for high‐performance triboelectric nanogenerators

“…There are also many promising effective charge enhancement schemes via various physical and chemical processes. [61][62][63] Actively control effective charge is a grand challenge and great opportunity for triboelectric materials research in the future.…”

Toward High‐Performance Triboelectric Nanogenerators by Engineering Interfaces at the Nanoscale: Looking into the Future Research Roadmap

“…However, this contact area has nanoscale interfaces that determine the final impact on the TENG’s properties. [ 12–38 ] The separation of these materials induces a dipole moment, which drives the charge (e.g., electrons) transfer by applying an external load onto the nanostructured interfaces of the two triboelectric materials. A TENG as a charge‐pump device could also provide current flow back and forth between the electrodes with a specific frequency to produce an alternating current (AC).…”