Flexible Self-Charging, Ultrafast, High-Power-Density Ceramic Capacitor System
- Authors
- Peddigari, Mahesh; Park, Jung Hwan; Han, Jae Hyun; Jeong, Chang Kyu; Jang, Jongmoon; Min, Yuho; Kim, Jong-Woo; Ahn, Cheol-Woo; Choi, Jong-Jin; Hahn, Byung-Dong; Park, Sang Yeong; Yoon, Woon-Ha; Park, Dong-Soo; Jeong, Dae-Yong; Ryu, Jungho; Lee, Keon Jae; Hwang, Geon-Tae
- Issue Date
- 9-Apr-2021
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS ENERGY LETTERS, v.6, no.4, pp 1383 - 1391
- Pages
- 9
- Journal Title
- ACS ENERGY LETTERS
- Volume
- 6
- Number
- 4
- Start Page
- 1383
- End Page
- 1391
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/25865
- DOI
- 10.1021/acsenergylett.1c00170
- ISSN
- 2380-8195
- Abstract
- Flexible self-charging capacitor systems, which exhibit the combined functions of energy generation and storage, are considered a promising solution for powering flexible self-powered electronics. Here, we present a new approach to demonstrate a flexible self-charging, ultrafast, and high-power-density (SUHP) capacitor system by integrating an aerosol-deposited nanograined relaxor ferroelectric Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMN-PT) capacitor and piezoelectric Pb(Zr-x,Ti1-x)O-3 (PZT) harvester. The as-designed flexible SUHP capacitor system can generate electric energy with an open-circuit voltage of 172 V and a short-circuit current of 21 mu A under a biomechanical bending force of human fingers. This energy can be stored in the integrated flexible capacitor part and then discharged with a high energy density of 2.58 J/cm(3) within an ultrafast time of 480 ns. Moreover, a high power density of 5.38 MW/cm(3) from the flexible SUHP capacitor suggests that the proposed approach for self-charging and energy storage may be an efficacious way to drive future flexible pulsed-power electronic devices.
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Collections - Department of Mechanical Design Engineering > 1. Journal Articles
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