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  • Wang, ZhenKTH,Fiberteknologi,KTH Royal Inst Technol, Sweden (author)

Dynamic Networks of Cellulose Nanofibrils Enable Highly Conductive and Strong Polymer Gel Electrolytes for Lithium-Ion Batteries

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • Wiley,2023
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-338472
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-338472URI
  • https://doi.org/10.1002/adfm.202212806DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-217313URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-193979URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20231115
  • Funding Agencies|Digital Cellulose Centre, a Vinnova (Swedish Innovation Agency) [2016-05193]; Knut and Alice Wallenbergs Research Foundation; Wallenberg Wood Science Centre at KTH [KAW 2018.0452-WWSC 2.0]; A-forsk foundation [19-320]
  • Tunable dynamic networks of cellulose nanofibrils (CNFs) are utilized to prepare high-performance polymer gel electrolytes. By swelling an anisotropically dewatered, but never dried, CNF gel in acidic salt solutions, a highly sparse network is constructed with a fraction of CNFs as low as 0.9%, taking advantage of the very high aspect ratio and the ultra-thin thickness of the CNFs (micrometers long and 2–4 nm thick). These CNF networks expose high interfacial areas and can accommodate massive amounts of the ionic conductive liquid polyethylene glycol-based electrolyte into strong homogeneous gel electrolytes. In addition to the reinforced mechanical properties, the presence of the CNFs simultaneously enhances the ionic conductivity due to their excellent strong water-binding capacity according to computational simulations. This strategy renders the electrolyte a room-temperature ionic conductivity of 0.61 ± 0.12 mS cm−1 which is one of the highest among polymer gel electrolytes. The electrolyte shows superior performances as a separator for lithium iron phosphate half-cells in high specific capacity (161 mAh g−1 at 0.1C), excellent rate capability (5C), and cycling stability (94% capacity retention after 300 cycles at 1C) at 60 °C, as well as stable room temperature cycling performance and considerably improved safety compared with commercial liquid electrolyte systems.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Heasman, PatrickLinköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten(Swepub:liu)pathe59 (author)
  • Rostami, JowanKTH,Fiberteknologi,KTH Royal Inst Technol, Sweden(Swepub:kth)u15z5t0e (author)
  • Benselfelt, TobiasKTH,Fiberteknologi,KTH Royal Inst Technol, Sweden(Swepub:kth)u1t85aim (author)
  • Linares, MathieuLinköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten(Swepub:liu)matli20 (author)
  • Li, HailongStockholms universitet,Fysikum,Department of Physics, AlbaNova University Center, Stockholm University, Stockholm, 10691, Sweden,Stockholm Univ, Sweden(Swepub:su)hali8905 (author)
  • Iakunkov, ArtemKTH,Fiberteknologi,KTH Royal Inst Technol, Sweden(Swepub:kth)u1cuh06t (author)
  • Sellman, Farhiya AlexKTH,Fiberteknologi,Wallenberg Wood Science Center,KTH Royal Inst Technol, Sweden; KTH Royal Inst Technol, Sweden(Swepub:kth)u1dvhkda (author)
  • Östmans, RebeccaKTH,Fiberteknologi,Wallenberg Wood Science Center,KTH Royal Inst Technol, Sweden; KTH Royal Inst Technol, Sweden(Swepub:kth)u1fichan (author)
  • Hamedi, Mahiar MaxKTH,Fiberteknologi,KTH Royal Inst Technol, Sweden(Swepub:kth)u1q9et3c (author)
  • Zozoulenko, IgorLinköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten,Wallenberg Wood Science Center(Swepub:liu)igozo50 (author)
  • Wågberg, Lars,1956-KTH,Fiberteknologi,Wallenberg Wood Science Center,KTH Royal Inst Technol, Sweden; KTH Royal Inst Technol, Sweden(Swepub:kth)u14jbte3 (author)
  • KTHFiberteknologi (creator_code:org_t)

Related titles

  • In:Advanced Functional Materials: Wiley33:301616-301X1616-3028

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