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Morphological Evolution and Solid-Electrolyte Interphase Formation on LiNi0.6Mn0.2Co0.2O2 Cathodes Using Highly Concentrated Ionic Liquid Electrolytes.
Hasanpoor, Meisam; Saurel, Damien; Barreno, Rosalía Cid; Fraysse, Kilian; Echeverría, María; Jáuregui, Maria; Bonilla, Francisco; Greene, George W; Kerr, Robert; Forsyth, Maria; Howlett, Patrick C.
Afiliación
  • Hasanpoor M; Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
  • Saurel D; CIC energiGUNE, Albert Einstein 48, Technology Park of Álava,, Vitoria-Gasteiz 01510, Spain.
  • Barreno RC; CIC energiGUNE, Albert Einstein 48, Technology Park of Álava,, Vitoria-Gasteiz 01510, Spain.
  • Fraysse K; Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
  • Echeverría M; CIC energiGUNE, Albert Einstein 48, Technology Park of Álava,, Vitoria-Gasteiz 01510, Spain.
  • Jáuregui M; CIC energiGUNE, Albert Einstein 48, Technology Park of Álava,, Vitoria-Gasteiz 01510, Spain.
  • Bonilla F; CIC energiGUNE, Albert Einstein 48, Technology Park of Álava,, Vitoria-Gasteiz 01510, Spain.
  • Greene GW; Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
  • Kerr R; Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
  • Forsyth M; Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
  • Howlett PC; Institute for Frontier Materials, Deakin University, 221 Burwood Highway, Burwood, Victoria 3125, Australia.
ACS Appl Mater Interfaces ; 14(11): 13196-13205, 2022 Mar 23.
Article en En | MEDLINE | ID: mdl-35274926
Employing high-voltage Ni-rich cathodes in Li metal batteries (LMBs) requires stabilization of the electrode/electrolyte interfaces at both electrodes. A stable solid-electrolyte interphase (SEI) and suppression of active material pulverization remain the greatest challenges to achieving efficient long-term cycling. Herein, studies of NMC622 (1 mAh cm-2) cathodes were performed using highly concentrated N-methyl-N-propylpyrrolidinium bis(fluorosulfonyl)imide (C3mpyrFSI) 50 mol % lithium bis(fluorosulfonyl)imide (LiFSI) ionic liquid electrolyte (ILE). The resulting SEI formed at the cathode enabled promising cycling performance (98.13% capacity retention after 100 cycles), and a low degree of ion mixing and lattice expansion was observed, even at an elevated temperature of 50 °C. Fitting of acquired impedance spectra indicated that the SEI resistivity (RSEI) had a low and stable contribution to the internal resistivity of the system, whereas active material pulverization and secondary grain isolation significantly increased the charge transfer resistance (RCT) throughout cycling.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2022 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Estados Unidos
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2022 Tipo del documento: Article País de afiliación: Australia Pais de publicación: Estados Unidos