Soft Electret Gel For Low Frequency Vibrational Energy Harvesters

[摘要] A soft electret material was obtained by solidifying ionic liquid in a polymer network and immobilizing cations (+) on the surface. When a piece of soft electret gel is sandwiched between a pair of electrodes, a large amount of charge is induced in an electrical-double-layer capacitor (1.0-10 μF/cm2) appearing at the interface of the electrode and the ionic liquid gel without an external voltage source. By retracting the electrode repeatedly, we obtained a current output of a few μAp-p/cm2stably.

[发布机构] SAGINOMIYA SEISAKUSHO, INC., 535 Sasai, Sayama, Saitama; 350-1395, Japan^1;Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa; 240-0196, Japan^2;CIRMM, IIS, University of Tokyo, 4-6-1 Komaba, Tokyo, Meguro; 153-8505, Japan^3

[效力级别] 能源学

[关键词] Current output;Electret materials;Electrical double layer capacitor;External voltages;Large amounts;Low-frequency;Polymer networks;Vibrational energies