Kim, Do-Heon Kim, Jin-Kyeom Choi, Sung Yeol Yang, Ya Song, Hyun-Cheol Park, Hye Sung Shim, Minseob Baik, Jeong Min 2024-01-19T08:00:46Z 2024-01-19T08:00:46Z 2024-01-18 2024-02 1614-6832 https://pubs.kist.re.kr/handle/201004/112952 Reducing the impedance of a triboelectric nanogenerator (TENG) without power loss is crucial for enhancing its energy conversion efficiency and overall performance. In this paper, a novel signal management structure, based on a newly designed sliding-mode TENG, aimed at effectively reducing impedance by converting narrow, instantaneous signals into broader ones is presented. This transformation is accomplished by adding a grounded electrode connected to a high-inductive inductor and fine-tuning the parasitic capacitance of the dielectric material. Utilizing a highly resistive material like P(VDF-TrFE), a significant improvement in the TENG's performance is achieved, resulting in an increase of output power to 0.352 mW and a decrease in impedance from 3.2 to 0.3 M Omega. This results in a threefold increase in charging speed, which can be attributed to the reduced charge loss and improved matching at lower impedance. Based on these promising findings, the enhanced TENG is successfully connected to power a system for electrochemical CO2 reduction for CO production. This system effectively reduces the required electrochemical reduction potential by approximate to 15% under real environments. English Wiley-VCH Verlag Addressing Triboelectric Nanogenerator Impedance for Efficient CO2 Utilization Article 10.1002/aenm.202304012 1 Advanced Energy Materials, v.14, no.8 Advanced Energy Materials 14 8 N scie scopus 001137284700001 2-s2.0-85181467672 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Energy & Fuels Materials Science Physics Article ENERGY POWER SYSTEMS parasitic capacitance signal management structure triboelectric nanogenerator CO2 reduction impedance reduction