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Bioinspired Ultrastrong Nanocomposite Membranes for Salinity Gradient Energy Harvesting from Organic Solutions

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journal contribution
posted on 2020-05-01, 00:00 authored by Cheng Chen, Dan LiuDan Liu, Guoliang Yang, J Wang, Lifeng WangLifeng Wang, Weiwei LeiWeiwei Lei
Efforts to extract energy from waste organic solutions can not only support clean environments but also help to alleviate the energy crisis. Here, a bioinspired ultrastrong nanocomposite membrane is developed via the layer-by-layer method based on aramid nanofiber-graphene oxide (AGO) with good mechanical properties for salinity gradient energy harvesting from organic solutions. Benefiting from the 1D and 2D network interlocking arrangement, the AGO membrane shows an unprecedented mechanical stress of 688 MPa and maintains its integrity after soaking in organic solvents for 24 h. Impressively, when LiCl is diluted in methanol, the AGO membrane device with a working area of 113 mm2 produces a current and a measured power generation of 28 ± 11 µA and 3140 ± 960 nW (Cfeed = 2 mol L−1), respectively. Thus, the working area of the AGO membrane for salinity gradient energy harvesting and temperature-related energy harvesting enables its use in practical applications. In addition, 14 cells with the methanol-LiCl solution (Cfeed = 1 mol L−1) can produce a voltage up to 1.82 V to light a liquid crystal display. Therefore, this AGO nanocomposite membrane presents a promising avenue to harvest salinity gradient energy from organic solutions.

History

Journal

Advanced Energy Materials

Volume

10

Issue

18

Article number

1904098

Pagination

1 - 7

Publisher

Wiley

Location

Hoboken, N.J.

ISSN

1614-6832

eISSN

1614-6840

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2020, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim