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Patterning Planar, Flexible Li-S Battery Full Cells on Laser-Induced Graphene Traces.

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Title: Patterning Planar, Flexible Li-S Battery Full Cells on Laser-Induced Graphene Traces.
Authors: Lau, Irene1 (AUTHOR), Campbell, Adam I. O.1 (AUTHOR), Ghosh, Debasis2 (AUTHOR) g.debasis@jainuniversity.ac.in, Pope, Michael A.1 (AUTHOR) michael.pope@uwaterloo.ca
Source: Nanomaterials (2079-4991). Jan2025, Vol. 15 Issue 1, p35. 19p.
Subjects: Lithium sulfur batteries, Electrochemical apparatus, Electronic equipment, Supersaturated solutions, Energy density
Abstract: Laser conversion of commercial polymers to laser-induced graphene (LIG) using inexpensive and accessible CO2 lasers has enabled the rapid prototyping of promising electronic and electrochemical devices. Frequently used to pattern interdigitated supercapacitors, few approaches have been developed to pattern batteries—in particular, full cells. Herein, we report an LIG-based approach to a planar, interdigitated Li-S battery. We show that sulfur can be deposited by selective nucleation and growth on the LIG cathode fingers in a supersaturated sulfur solution. Melt imbibition then leads to loadings as high as 3.9 mg/cm2 and 75 wt% sulfur. Lithium metal anodes are electrodeposited onto the LIG anode fingers by a silver-seeded, pulse-reverse-pulse method that enables loadings up to 10.5 mAh/cm2 to be deposited without short-circuiting the interdigitated structure. The resulting binder/separator-free flexible battery achieves a capacity of over 1 mAh/cm2 and an energy density of 200 mWh/cm3. Unfortunately, due to the use of near stoichiometric lithium, the cycle-life is sensitive to lithium degradation. While future work will be necessary to make this a practical, flexible battery, the interdigitated structure is well-suited to future operando and ex situ studies of Li-S and related battery chemistries. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Patterning Planar, Flexible Li-S Battery Full Cells on Laser-Induced Graphene Traces.
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  Data: <searchLink fieldCode="AR" term="%22Lau%2C+Irene%22">Lau, Irene</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Campbell%2C+Adam+I%2E+O%2E%22">Campbell, Adam I. O.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ghosh%2C+Debasis%22">Ghosh, Debasis</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> g.debasis@jainuniversity.ac.in</i><br /><searchLink fieldCode="AR" term="%22Pope%2C+Michael+A%2E%22">Pope, Michael A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> michael.pope@uwaterloo.ca</i>
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jan2025, Vol. 15 Issue 1, p35. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Lithium+sulfur+batteries%22">Lithium sulfur batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+apparatus%22">Electrochemical apparatus</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+equipment%22">Electronic equipment</searchLink><br /><searchLink fieldCode="DE" term="%22Supersaturated+solutions%22">Supersaturated solutions</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+density%22">Energy density</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Laser conversion of commercial polymers to laser-induced graphene (LIG) using inexpensive and accessible CO2 lasers has enabled the rapid prototyping of promising electronic and electrochemical devices. Frequently used to pattern interdigitated supercapacitors, few approaches have been developed to pattern batteries—in particular, full cells. Herein, we report an LIG-based approach to a planar, interdigitated Li-S battery. We show that sulfur can be deposited by selective nucleation and growth on the LIG cathode fingers in a supersaturated sulfur solution. Melt imbibition then leads to loadings as high as 3.9 mg/cm2 and 75 wt% sulfur. Lithium metal anodes are electrodeposited onto the LIG anode fingers by a silver-seeded, pulse-reverse-pulse method that enables loadings up to 10.5 mAh/cm2 to be deposited without short-circuiting the interdigitated structure. The resulting binder/separator-free flexible battery achieves a capacity of over 1 mAh/cm2 and an energy density of 200 mWh/cm3. Unfortunately, due to the use of near stoichiometric lithium, the cycle-life is sensitive to lithium degradation. While future work will be necessary to make this a practical, flexible battery, the interdigitated structure is well-suited to future operando and ex situ studies of Li-S and related battery chemistries. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano15010035
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        Text: English
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        Type: general
      – SubjectFull: Electrochemical apparatus
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      – SubjectFull: Electronic equipment
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      – SubjectFull: Supersaturated solutions
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              M: 01
              Text: Jan2025
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              Y: 2025
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