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Title: Control of formation of viscoelastic droplets and distribution of nano-inclusions in functional deposition for lithium–sulfur batteries

Journal Article · · Soft Matter
DOI:https://doi.org/10.1039/c9sm01212e· OSTI ID:1874094

The electrospray process produces micro/nanodroplets for various applications such as thin and uniform coatings, drug carriers and mass spectrometry. In this paper, we study the spray processes of viscoelastic jets using simulations and experiments. In discretized modeling, the jet is perturbed with axisymmetric instability and the growth of this instability causes the jet to break into droplets. For the experiments, a solution of polyvinyl alcohol in water is sprayed and is visualized using a high-speed camera. The droplet size distribution is studied from simulations with experiments for three spray cases: electrospray, air spray, and air-controlled electrospray. Our simulations and experiments reveal that the electric field is effective in reducing the droplet size, while air flow offers more jet break-ups and thus a larger number of droplets. As a result, air-controlled electrospray where these two driving forces are synergistically combined leads to a larger number of smaller droplets than electrospray or air spray. As a result, we applied three spray processes to obtain a deposition of sulfur/mesoporous carbon/graphene/polymer binder composites as a lithium sulfur battery cathode and demonstrated that air-controlled electrospray leads to a higher capacity and rate capability than other processes, exhibiting 800 mA h g–1 at 0.5C and 600 mA h g–1 at 2C.

Research Organization:
Cornell Univ., Ithaca, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); NSF MRSEC
Grant/Contract Number:
EE0008193
OSTI ID:
1874094
Alternate ID(s):
OSTI ID: 1546096
Journal Information:
Soft Matter, Vol. 15, Issue 32; ISSN 1744-683X
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (39)

Superhydrophobic electrosprayed PTFE journal November 2007
Transparent Superhydrophobic Films Based on Silica Nanoparticles journal June 2007
A facile approach to robust superhydrophobic 3D coatings via connective-particle formation using the electrospraying process journal January 2013
Electrosprayed Enzyme Coatings as Bioinspired Alternatives to Bioceramic Coatings for Orthopedic and Oral Implants journal March 2009
Direct synthesis and coating of advanced nanocomposite negative electrodes for Li-ion batteries via electrospraying journal December 2011
Electrostatic spray deposition of thin layers of cathode materials for lithium battery journal July 1996
Electrostatic spray deposition of porous Fe2O3 thin films as anode material with improved electrochemical performance for lithium–ion batteries journal September 2009
Electrospray ion source. Another variation on the free-jet theme journal September 1984
Electrospray ionization for mass spectrometry of large biomolecules journal October 1989
Disintegration of Water Drops in an Electric Field journal July 1964
Electrically Driven Jets journal December 1969
Taylor cone and jetting from liquid droplets in electrospinning of nanofibers journal November 2001
Axisymmetric instabilities of electrically driven viscoelastic jets journal August 2008
Axisymmetric instabilities in electrospinning of highly conducting, viscoelastic polymer solutions journal October 2009
Discretized modeling of beads-on-a-string morphology from electrically driven, conducting, and viscoelastic polymer jets journal April 2017
A model of steady state jet in the electrospinning process journal January 2000
Bending instability of electrically charged liquid jets of polymer solutions in electrospinning journal May 2000
Electrospinning and electrically forced jets. I. Stability theory journal August 2001
Stretching of a straight electrically charged viscoelastic jet journal December 2003
Electrospinning of viscoelastic Boger fluids: Modeling and experiments journal May 2006
Formation of beads-on-a-string structures during break-up of viscoelastic filaments journal June 2010
Efficient Lagrangian simulation of electrospray droplets dynamics journal May 2012
Numerical modeling and experimental validation of a universal secondary electrospray ionization source for mass spectrometric gas analysis in real-time journal February 2016
Discretized modeling of electrically driven viscoelastic jets in the initial stage of electrospinning journal May 2011
Discretized modeling for centrifugal spinning of viscoelastic liquids journal September 2017
Functional Dependence of Drag Coefficient of a Sphere on Reynolds Number journal January 1970
Controlling the Placement of Spherical Nanoparticles in Electrically Driven Polymer Jets and its Application to Li-Ion Battery Anodes journal August 2016
Preparation and properties of functionalized multiwalled carbon nanotubes/polypropylene nanocomposite bipolar plates for polymer electrolyte membrane fuel cells journal January 2010
Highly Conductive Graphene Nanoribbons by Longitudinal Splitting of Carbon Nanotubes Using Potassium Vapor journal January 2011
Rayleigh jets from levitated microdroplets journal January 2003
Effect of shear on nanoparticle dispersion in polymer melts: A coarse-grained molecular dynamics study journal January 2010
Block Copolymer Nanocomposites: Perspectives for Tailored Functional Materials journal June 2005
Simulating the morphology and mechanical properties of filled diblock copolymers journal March 2003
Polyisoprene-Polystyrene Diblock Copolymer Phase Diagram near the Order-Disorder Transition journal December 1995
A review on separators for lithium sulfur battery: Progress and prospects journal November 2016
Challenges and Prospects of Lithium–Sulfur Batteries journal June 2012
Sulphur–TiO2 yolk–shell nanoarchitecture with internal void space for long-cycle lithium–sulphur batteries journal January 2013
Poromechanical effect in the lithium–sulfur battery cathode journal December 2016
Compact high volumetric and areal capacity lithium sulfur batteries through rock salt induced nano-architectured sulfur hosts journal January 2017