期刊
NANO ENERGY
卷 71, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.104610
关键词
Asymmetric ionic aerogel; Biological nanofibrils; Electricity harvest; Moisture
类别
资金
- National Natural Science Foundation of China [21474125, 51608509]
- Chinese 1000 Youth Talent Program
- Shandong Taishan Youth Scholar Program
- Shandong Provincial Natural Science Foundation [JQ201609]
- QIBEBT & Dalian National Laboratory For Clean Energy (DNL), CAS [QIBEBT I201916]
- 135 Projects Fund of CAS QIBEBT Director Innovation Foundation
- Shandong Collaborative Innovation Centre for Marine Biomass Fibre Materials and Textiles
Artificial asymmetric ionic membranes have attracted great interests in harvesting electricity from ubiquitous water activities, while mostly based on delicately-designed nanopores/nanochannels, either to harness saline water in mimic of cytomembranes or to harness moisture with carbon nanomaterials. Herein, fully biological asymmetric ionic aerogels were fabricated from biological oppositely-charged nanofibrils through a facile freeze-casting method. When exposing to moisture, these nanofibrils may be hydrated by capturing moisture and thus simulate the charged nanochannels for ion transport. Ion dissociation and diffusion ions would induce directional movement of charges, thereby leading to a potential up to 115 mV. With sustainability, biocompatibility and biodegradability, these biological nanogenerators may promise a low-cost and high-efficiency electricity harvest strategy from moist air, being capable of serving as self-powered wearable, biomedical and miniaturized electronic devices.
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