Cold sintering of a Li-ion cathode: LiFePO4-composite with high volumetric capacity

Thermosetting polymers in cold sintering: The fabrication of ZnO‐polydimethylsiloxane composites

“…CSP bridges the gap between processing temperatures of an important number of ceramics and polymers, offering a unique opportunity for the discovery, design, and fabrication of new composites with engineered grain boundaries. As an example, Randall et al investigated the potential of the CSP to several new ceramic‐polymer composites, including the Li‐ion battery electrolyte Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 ‐(‐CH 2 CF 2 ‐) x [‐CF 2 CF(CF 3 )‐] y , Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) or Li 1+ x + y Al x Ti 2− x Si y P 3‐ y O 12 (LATP) with bis(trifluoromethanesulfonyl)imide (LiTFSI) salts showing similar room temperature conductivity (10 −4 S·cm −1 ) as conventionally sintered ceramics, Li‐ion cathode LiFePO 4 ‐Polyvinylidene fluoride with enhanced electrochemical performances, semiconductor V 2 O 5 ‐poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate composites with engineered mechanical, thermal, and electronic properties . These studies highlight the new opportunities for high ceramic volume fraction (v/v >95%) ceramic‐thermoplastic polymer composites enabled by cold sintering.…”

“…5 Al 0.5 Ge 1.5 (PO 4 ) 3 -(-CH 2 CF 2 -) x [-CF 2 CF(CF 3 )-] y , 16 Li 1. 5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) or Li 1+x+y Al x Ti 2−x Si y P 3y O 12 (LATP) with bis(trifluoromethanesulfonyl)imide (LiTFSI) salts showing similar room temperature conductivity (10 −4 S·cm −1 ) as conventionally sintered ceramics, 17 Li-ion cathode LiFePO 4 -Polyvinylidene fluoride with enhanced electrochemical performances, 18 semiconductor V 2 O 5 -poly(3,4-ethylenedioxythiophene) polystyrene sulfonate composites with engineered mechanical, thermal, and electronic properties. 19 These studies highlight the new opportunities for high ceramic volume fraction (v/v >95%) ceramic-thermoplastic polymer composites enabled by cold sintering.…”

Cold Sintering of a Covalently Bonded MoS2/Graphite Composite as a High Capacity Li–Ion Electrode

“…which resulted in a successful consolidation of LAGP electrolytes at substantially reduced temperature, either with and without a polymeric phase of PVDF (Polyvinyldiflouride) ,. The exemplary studies followed by another remarkable consolidation process of CSP with a LiFePO 4 cathode which achieved 170mAh/g specific capacity with ∼89% relative density, as reported at Seo et al ,. The CSP technique accomplished densification in more than 60 inorganic compounds.…”

“…Recently, a “Cold sintering process (CSP)” was developed as a promising technique to fabricate ceramics at low temperatures and one attractive application area is the fabrication of high volumetric density battery cathodes and solid state electrolytes . The CSP method involves a transient liquid phase sintering approach that enables to densify ceramics up to 80%–99% relative densities, at extremely low sintering temperatures <300 °C with low to intermediate uniaxial pressures (50–500 MPa) .…”

“…In addition, it can provide sustainable manufacturing solutions with comparatively low sintering temperatures as well as the ability to enable multilayer devices when employing forming techniques such as tape casting and screen printing methods ,. As a result, CSP unlocks routes for a wide variety of materials and extends the scope of the application areas from microwave dielectrics, thermoelectrics, ferroelectrics, semiconductors, refractories, ionic conductors to battery electrodes, and electrolytes …”