Single-layer MoS2 nanopores as nanopower generators
Open accessAbstract
Making use of the osmotic pressure difference between fresh water and seawater is an attractive, renewable and clean way to generate power and is known as 'blue energy'. Another electrokinetic phenomenon, called the streaming potential, occurs when an electrolyte is driven through narrow pores either by a pressure gradient or by an osmotic potential resulting from a salt concentration gradient. For this task, membranes made of two-dimensional materials are expected to be the most efficient, because water transport through a membrane scales inversely with membrane thickness. Here we demonstrate the use of single-layer molybdenum disulfide (MoS2) nanopores as osmotic nanopower generators. We observe a large, osmotically induced current produced from a salt gradient with an estimated power density of up to 10(6) watts per square metre--a current that can be attributed mainly to the atomically thin membrane of MoS2. Low power requirements for nanoelectronic and optoelectric devices can be provided by a neighbouring nanogenerator that harvests energy from the local environment--for example, a piezoelectric zinc oxide nanowire array or single-layer MoS2 (ref. 12). We use our MoS2 nanopore generator to power a MoS2 transistor, thus demonstrating a self-powered nanosystem.
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“For practical use, the findings may remind people of the ionic specific effects in the development of new EDL-based nanotechnologies, especially those that are executed in confined spaces, such as the nanochannel-based power generator and DNA sequencing [75,76].”
Background
- Authors
- Feng, J., Graf, M., Liu, K., Ovchinnikov, D., Dumcenco, D., Heiranian, M., Nandigana, V., Aluru, N. R., Kis, A., & Radenovic, A.
- Affiliations
- École Polytechnique Fédérale de Lausanne (CH)
- University of Illinois Urbana-Champaign (US)
- Corresponding author
- Feng, Jiandong
- ORCID
- Venue
- Nature
- Published
- 2016-07-13
- Volume
- 536
- Issue
- 7615
- Pages
- 197-200
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2460650176
- Cited by
- 1,239
- References
- 45
- Citations by year
- 2026: 93 · 2025: 146 · 2024: 178 · 2023: 141 · 2022: 141 · 2021: 141 · 2020: 115 · 2019: 115 · 2018: 91 · 2017: 69 · 2016: 9
- FWCI
- 45.64
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Nature (publishedVersion)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
- Funders
- National Science Foundation (1545907, FP7/2007-2013, 1420882, 1264282, 1506619)
- European Commission (2007–2013, FP7 2007-2013, 318804, FP7/2007)
- École Polytechnique Fédérale de Lausanne
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (FP7/2007-2013, 157802, 147607, BIONIC BSCGI0_157802))
- University of Illinois at Urbana-Champaign
- FP7 Ideas: European Research Council (259398)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Nanopore and Nanochannel Transport Studies
- Physical Sciences › Environmental Science › Water Science and Technology › Membrane Separation Technologies
- Physical Sciences › Engineering › Biomedical Engineering › Membrane-based Ion Separation Techniques
- Keywords
- MoS2, salinity gradient energy, two-dimensional materials, salinity gradient, streaming potential, MoS2 transistors, energy harvesting, atomically thin membranes
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