BaTiO3-Poly vinylidene fluoride (PVDF) solution was prepared by adding 0~25 wt% BaTiO3 nanopowder and 10 wt% PVDF powder in solvent. BaTiO3-PVDF film was fabricated by spreading the solution on a glass with a doctor blade. The output performance increased with increasing BaTiO3 concentration. When the BaTiO3 concentration was 20 wt%, the output voltage and current were 4.98 V and 1.03 μA at an applied force of 100 N. However, they decreased when the over 20 wt% BaTiO3 powder was added, due to the aggregation of particles. To enhance the output performance, the generator was poled with an electric field of 150~250 kV/cm at 100 °C for 12 h. The output performance increased with increasing electric field. The output voltage and current were 7.87 V and 2.5 μA when poled with a 200 kV/cm electric field. This result seems likely to be caused by the c-axis alignment of the BaTiO3 after poling treatment. XRD patterns of the poled BaTiO3-PVDF films showed that the intensity of the (002) peak increased under high electric field. However, when the generator was poled with 250 kV/cm, the output performance of the generator degraded due to breakdown of the BaTiO3-PVDF film. When the generator was matched with 800 Ω resistance, the power density of the generator reached 1.74 mW/m2. The generator was able to charge a 10 μF capacitor up to 1.11 V and turn on 10 red LEDs.

1. 서 론
2. 실험 방법
3. 결과 및 고찰
4. 결 론
Acknowledgement
References

• 김희태(경북대학교 에너지신소재화학공학과) | Hee-Tae Kim (Department of Energy Materials & Chemical Engineering, Kyungpook National University, Sangju 37224, Republic of Korea)
• 박상식(경북대학교 에너지신소재화학공학과, 경북대학교 미래과학기술융합학과) | Sang-Shik Park (Department of Energy Materials & Chemical Engineering, Kyungpook National University, Sangju 37224, Republic of Korea, Department of Advanced Science and Technology Convergence, Kyungpook National University, Sangju 37224, Republic of Korea) Corresponding author