GT05 Square Solid-State Battery Test Cell – PEEK, 34×40mm, 500MPa | Xnergy

Name: GT05 Square Solid-State Battery Test Cell – PEEK, 500 MPa

Mold Type: Square-Form Pressure Jig + Integrated Test Cell

Product Code: XN-BM-GT05

Description:

The GT05 is a square-form solid-state battery test cell engineered for research on planar (non-circular) electrode samples. Unlike circular-pellet molds (GT01–GT04) which constrain researchers to round geometries, the GT05 features a defined 30 × 40 mm rectangular bonding area — supporting square or rectangular electrode coupons that better match scale-up production geometries. As a result, this mold delivers research data more representative of pouch-cell and large-format solid-state battery designs than circular pellet molds. The GT05 is rated to ≤ 500 MPa maximum working pressure and ≤ 250 °C maximum operating temperature, supporting both ambient and elevated-temperature solid-state battery studies. Furthermore, the square-form architecture is particularly well-suited for electrode polishing and surface characterization studies, where flat, defined-area electrode coupons enable consistent surface preparation across samples. Customization and modification are available on request.

Application:

The GT05 mold is designed for square/rectangular-electrode solid-state battery research, including planar electrode pellet pressing and densification with defined-area coupons, full-cell solid-state battery assembly with rectangular sample geometry that more closely matches pouch and large-format cell designs, electrode polishing and surface characterization studies under controlled stack pressure, in-situ electrochemical testing under sustained pressure (impedance spectroscopy, cyclic voltammetry, galvanostatic cycling), elevated-temperature solid-state battery characterization up to 250 °C, and academic studies of edge effects and area-scaling behavior in solid-state battery cells.

Specifications:

Values measured by Xnergy. Typical values for reference; not guaranteed unless otherwise specified.

Characteristics:

Square-form architecture for production-relevant geometry

Unlike circular-pellet molds that constrain researchers to round geometries, the GT05 provides a 30 × 40 mm rectangular bonding area — directly representative of pouch-cell and large-format solid-state battery designs. As a result, research data obtained with the GT05 transfers more reliably to scale-up production geometries, reducing the gap between lab-scale studies and commercial cell development.

Defined bonding area for repeatable electrode polishing and surface studies

The flat, defined 30 × 40 mm bonding area is particularly well-suited for electrode polishing and surface characterization studies, where consistent surface preparation across samples is critical for meaningful comparison. Therefore, this mold supports research workflows including XPS surface analysis, SEM imaging of polished cross-sections, contact-angle measurements, and other characterization techniques that require defined planar electrode coupons.

Wide working temperature range (up to 250 °C)

The 250 °C upper temperature limit accommodates elevated-temperature solid-state battery testing, including sulfide electrolyte sintering studies, polymer electrolyte glass-transition characterization, and high-temperature cycling validation. Consequently, this mold supports both room-temperature ionic-conductor research and high-temperature solid-state battery development without requiring specialized high-temperature fixtures.

Strong compressive strength (≤ 500 MPa)

The GT05 is rated to 500 MPa maximum working pressure — sufficient for densifying sulfide-based solid electrolytes, oxide-based pellets, and composite cathodes that require high compaction across the larger square bonding area. Furthermore, the rectangular geometry distributes pressure uniformly across a defined planar surface, eliminating the radial pressure gradients inherent to circular-pellet molds.

Compact PEEK + stainless steel structure

The combination of stainless steel frame and PEEK insulating sleeve delivers excellent mechanical rigidity, chemical stability against lithium-metal anodes and sulfide solid electrolytes, and high dielectric strength for accurate electrochemical impedance measurements. Therefore, the GT05 maintains the chemical and electrical performance characteristics of Xnergy’s circular-pellet GT-series while extending the platform to square-form sample geometries.

Optimized for stacked-cell assemblies

With a 75 mm assembly height, the GT05 provides sufficient vertical clearance for full-cell solid-state battery stacks (cathode + solid electrolyte + anode + current collectors) within the rectangular geometry. As a result, this mold supports complete full-cell research, not just single-component pellet pressing.

Customization and modification on request

The GT05 supports customization and modification on request — including custom bonding-area dimensions, alternative insulating sleeve materials, modified frame heights, and specialized component arrangements. Therefore, researchers with non-standard square or rectangular cell geometries or specialized experimental setups can obtain a tailored configuration to match their experimental requirements.

Recommended Operating Procedure:

1. Clean all mold components with isopropyl alcohol and dry thoroughly before each use. 2. Apply a thin layer of vacuum grease or anti-seize compound between the contacting surfaces and the PEEK sleeve to reduce friction. 3. Inside an argon-filled glovebox, load the bottom electrode current collector (cut to fit the 30 × 40 mm bonding area), then sequentially add cathode powder or cast electrode, solid electrolyte powder/pellet/film, and anode (lithium foil or anode powder/cast electrode). 4. Insert the top pressure plate and apply the target pressure using a hydraulic press (do not exceed 500 MPa). 5. Tighten the locking screws on the frame to maintain stack pressure during transfer out of the glovebox. 6. Perform electrochemical measurements at the required temperature (do not exceed 250 °C). 7. After testing, release pressure gradually, disassemble in the glovebox, and clean all components with alcohol before storage.

Packaging & Storage:

Each GT05 mold ships fully assembled in a protective foam-lined case with all components, including the stainless steel frame, PEEK sleeve, sealing O-rings, and locking knobs. Therefore, store in a dry environment (15–25 °C, RH < 40 %) protected from dust and moisture. After each use, clean components with isopropyl alcohol, apply a thin layer of vacuum grease to metal surfaces, and store in the original case to prevent oxidation and corrosion.

Safety:

For research and industrial laboratory use only. Do not exceed the maximum working pressure (500 MPa) or maximum operating temperature (250 °C) — exceeding these limits may result in mold damage, sample loss, or personal injury. Always wear appropriate PPE (safety glasses, gloves) when applying pressure or operating at elevated temperature. When working with lithium-metal anodes, sulfide electrolytes, or other reactive materials, perform all assembly and disassembly inside an argon-filled glovebox. Refer to the included user manual for complete safety and operating instructions.

Note: Specifications listed above are typical and for reference only. Actual performance and pressure requirements depend on solid electrolyte chemistry, electrode thickness, and target densification level — consult published literature for guidance on optimal pressure and temperature conditions for specific solid-state battery systems. For researchers exploring complete solid-state battery research workflows, see also Xnergy’s related products: GT01 Standard Solid-State Battery Mold, GT01-TC Ceramic Solid-State Battery Mold, GT02 Standard Solid-State Battery Mold, GT02-TC Ceramic Solid-State Battery Mold, GT03 High-Pressure Solid-State Battery Mold, GT04 Three-Electrode Solid-State Battery Mold, YL02 CG Square Flow Battery Mold, and YT01 Swagelok Dual-Electrode Mold. Browse the full Battery Mold category for all configurations.