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Greener, Safer and Better Performing Aqueous Binder for Positive Electrode Manufacturing of Sodium Ion Batteries.
Xu, Ruochen; Pamidi, Venkat; Tang, Yushu; Fuchs, Stefan; Stein, Helge S; Dasari, Bosubabu; Zhao-Karger, Zhirong; Behara, Santosh; Hu, Yang; Trivedi, Shivam; Anji Reddy, M; Barpanda, Prabeer; Fichtner, Maximilian.
Afiliación
  • Xu R; Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081, Ulm, Germany.
  • Pamidi V; Technical University of Munich, Lichtenbergstraße 4, 85748, Garching, Germany.
  • Tang Y; Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081, Ulm, Germany.
  • Fuchs S; Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021, Karlsruhe, Germany.
  • Stein HS; Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany.
  • Dasari B; Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081, Ulm, Germany.
  • Zhao-Karger Z; Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology (KIT), Fritz-Haber Weg 2, 76131, Karlsruhe, Germany.
  • Behara S; Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081, Ulm, Germany.
  • Hu Y; Institute of Physical Chemistry (IPC), Karlsruhe Institute of Technology (KIT), Fritz-Haber Weg 2, 76131, Karlsruhe, Germany.
  • Trivedi S; Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081, Ulm, Germany.
  • Anji Reddy M; Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021, Karlsruhe, Germany.
  • Barpanda P; Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081, Ulm, Germany.
  • Fichtner M; Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021, Karlsruhe, Germany.
ChemSusChem ; 17(8): e202301154, 2024 Apr 22.
Article en En | MEDLINE | ID: mdl-38179813
ABSTRACT
P2-type cobalt-free MnNi-based layered oxides are promising cathode materials for sodium-ion batteries (SIBs) due to their high reversible capacity and well chemical stability. However, the phase transformations during repeated (dis)charge steps lead to rapid capacity decay and deteriorated Na+ diffusion kinetics. Moreover, the electrode manufacturing based on polyvinylidene difluoride (PVDF) binder system has been reported with severely defluorination issue as well as the energy intensive and expensive process due to the use of toxic and volatile N-methyl-2-pyrrolidone (NMP) solvent. It calls for designing a sustainable, better performing, and cost-effective binder for positive electrode manufacturing. In this work, we investigated inorganic sodium metasilicate (SMS) as a viable binder in conjunction with P2-Na0.67Mn0.55Ni0.25Fe0.1Ti0.1O2 (NMNFT) cathode material for SIBs. The NMNFT-SMS electrode delivered a superior electrochemical performance compared to carboxy methylcellulose (CMC) and PVDF based electrodes with a reversible capacity of ~161 mAh/g and retaining ~83 % after 200 cycles. Lower cell impedance and faster Na+ diffusion was also observed in this binder system. Meanwhile, with the assistance of TEM technique, SMS is suggested to form a uniform and stable nanoscale layer over the cathode particle surface, protecting the particle from exfoliation/cracking due to electrolyte attack. It effectively maintained the electrode connectivity and suppressed early phase transitions during cycling as confirmed by operando XRD study. With these findings, SMS binder can be proposed as a powerful multifunctional binder to enable positive electrode manufacturing of SIBs and to overall reduce battery manufacturing costs.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ChemSusChem Asunto de la revista: QUIMICA / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ChemSusChem Asunto de la revista: QUIMICA / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania