発電スイッチのための軟 X 線荷電された圧電エレクトレットに関する研究

抄録

A soft X-ray charged multilayered PTFE-based piezoelectret is proposed for kinetic energy harvesting. With the aid of the electrode embedded in the multilayered structure, higher surface charge density could be obtained with soft X-ray charging if compared with conventional corona charging. The output power of 0.5 μJ is obtained when pressed down by 0.3 mm in 0.2 s, which corresponds to the piezoelectric coefficient d₃₃ of 155 pC/N. An electromechanical model is also developed and the results are compared with the experimental data.