Highly durable direct-current power generation in polarity-controlled and soft-triggered rotational triboelectric nanogenerator
- Authors
- Han, Jae Yeon; Singh, Huidrom Hemojit; Won, Sukyoung; Kong, Dae Sol; Hu, Ying Chieh; Ko, Young Joon; Lee, Kyu-Tae; Wie, Jeong Jae; Jung, Jong Hoon
- Issue Date
- May-2022
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Triboelectric nanogenerator; Direct-current; Durability; Polarity-control; Soft-triggering; Rotational energy harvesting
- Citation
- APPLIED ENERGY, v.314, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED ENERGY
- Volume
- 314
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/188649
- DOI
- 10.1016/j.apenergy.2022.119006
- ISSN
- 0306-2619
- Abstract
- While the sliding-mode triboelectric nanogenerators (TENGs) have demonstrated one of the most efficient rotational energy harvesting devices, alternating-current (AC) generation and wear-off have been a long-standing bottleneck for practical applications. Here, we developed a polarity-controlled and soft-triggered (P-S) TENG for highly efficient and durable direct-current (DC) power generation. The P-S TENG consists of polytetrafluoro-ethylene (PTFE), nylon, and Cu films for triboelectrification, as well as another Cu film for charge-delivering electrode. The PTFE and nylon films were alternately attached to the outer acrylic cylinder, and four-segmented Cu films were attached to the inner acrylic cylinder. The P-S TENG generated a power-density of 0.32 mW/cm(2), which was 4-fold and 32-fold larger than that of paired alternate and single polarity TENG, respectively. Remarkably, the DC output of P-S TENG remained nearly constant, despite 372,000 rotations, which sharply contrasted with the substantial power decrease (47%) in hard-triggered TENG. This work provides an important advancement in a rotational TENG with high DC power generation and long-term durability.
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