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Advances in Nanofluids for Energy Storage and Conversion Applications

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "D1: Advanced Energy Materials".

Deadline for manuscript submissions: closed (21 November 2022) | Viewed by 2735

Special Issue Editor

Department of Chemistry and Biochemistry, University of Wisconsin Lacrosse, Wisconsin, WI 54601, USA
Interests: catalysis; redox flow battery; nanofluids; energy storage; electrochemistry

Special Issue Information

Dear Colleagues,

Nanofluids have been historically investigated for their superior thermal properties, such as thermal conductivity and heat transfer, and typically considered for use in industrial and automotive cooling applications. More recently, suspensions of functional nanomaterials have been investigated as media for chemical reactions, thermal storage media, solar harvesting applications, electrochemical energy storage solutions, and in biomedicines/foods. A variety of nanoparticle materials in suspensions have been studied, including metals, metal oxides and different forms of carbon, such as graphene and nanotubes. A variety of base fluids have also been tested, including water, alcohols, glycols, oils, and their mixtures. Complex and novel behaviors exhibited by such nanofluids have resulted in multiple theories being formulated in attempt to explain their thermophysical properties such as viscosity and thermal conductivity.

Energy storage and conversion systems represent a very broad topic, and the use of nanofluids in such applications is rapidly developing through multidisciplinary approaches. This Special Issue aims to motivate researchers who have recently been exploring areas related to energy storage and conversion systems that utilize novel aspects of nanofluids, including methods for modification, advanced characterization and the use of additives for tuning properties, including—but not limited to—rheology, thermal, electrical and ionic conductivity. We invite authors to submit their original research articles, review articles and perspective articles pertaining to the use of nanofluids in energy storage and conversion devices.

Dr. Sujat Sen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanofluids
  • redox flow batteries
  • viscosity
  • heat transfer
  • energy storage and conversion
  • nanoparticles
  • electrochemistry
  • thermal conductivity

Published Papers (1 paper)

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Research

13 pages, 1979 KiB  
Article
Nickel Hydroxide Nanofluid Cathodes with High Solid Loadings and Low Viscosity for Energy Storage Applications
by Sujat Sen, Elahe Moazzen, Sinjin Acuna, Evan Draxler, Carlo U. Segre and Elena V. Timofeeva
Energies 2022, 15(13), 4728; https://doi.org/10.3390/en15134728 - 28 Jun 2022
Cited by 2 | Viewed by 2075
Abstract
Nanofluid electrodes with high loading of active solid materials have significant potential as high energy density flow battery electrolytes; however, two key criteria need to be met: they must have a manageable viscosity for pumping and simultaneously exhibit good electrochemical activity. A typical [...] Read more.
Nanofluid electrodes with high loading of active solid materials have significant potential as high energy density flow battery electrolytes; however, two key criteria need to be met: they must have a manageable viscosity for pumping and simultaneously exhibit good electrochemical activity. A typical dispersion of nickel hydroxide nanoparticles (~100 nm) is limited to 5–10 wt.% of solids, above which it has a paste-like consistency, incompatible with flow applications. We report on the successful formulation of stable dispersions of a nano-scale nickel hydroxide cathode (β-Ni(OH)2) with up to 60 wt.% of solids and low viscosity (32 cP at 25 °C), utilizing a surface graft of small organic molecules. The fraction of grafting moiety is less than 3 wt.% of the nanoparticle weight, and its presence is crucial for the colloidal stability and low viscosity of suspensions. Electrochemical testing of the pristine and modified β-Ni(OH)2 nanoparticles in the form of solid casted electrodes were found to be comparable with the latter exhibiting a maximum discharge capacity of ~237 mAh/g over 50 consecutive charge–discharge cycles, close to the theoretical capacity of 289 mAh/g. Full article
(This article belongs to the Special Issue Advances in Nanofluids for Energy Storage and Conversion Applications)
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