High-Pressure Solid-State Battery Assembly Mold for Laboratory Research – GT03

Name: High-Pressure Solid-State Battery Assembly Mold for Laboratory Research – GT03

Mold Type: High-Pressure Jig with Voltage Stabilizing Plate + Integrated Test Cell

Product Code: XN-BM-GT03

Description:

The GT03 is the high-pressure flagship of Xnergy’s GT-series solid-state battery assembly molds, engineered for demanding research conditions where elevated pressure and long-term stack-pressure stability are critical. As a result, the GT03 delivers 800 MPa maximum working pressure and 250 °C maximum operating temperature — substantially exceeding the rated capacity of standard GT01 and GT02 molds. The defining feature of the GT03 is its integrated voltage stabilizing plate (pressure-stabilizing plate), which uses a sprung four-column structure to maintain uniform stack pressure across the cell during long-duration cycling — even as the electrode stack thickness changes due to lithium plating, expansion, or relaxation. The GT03 offers better pressure stability than GT01 and GT02, making it the preferred choice for sulfide-electrolyte densification, oxide-pellet pressing near full theoretical density, and lithium-metal solid-state battery cycling experiments where dendrite suppression depends on consistent stack pressure. Furthermore, the mold accommodates interior diameters from 6 mm to 20 mm (commonly 10 mm or 12 mm), making it suitable for a wide range of pellet sizes used in academic and industrial solid-state battery laboratories. Customization and modification are available on request.

Application:

The GT03 mold is designed for high-pressure laboratory-scale solid-state battery research, including sulfide solid electrolyte densification at 500–800 MPa for maximum ionic conductivity, oxide solid electrolyte pellet pressing near full theoretical density, full-cell solid-state battery assembly with sustained stack pressure for long-duration cycling, lithium-metal solid-state battery research where consistent stack pressure is critical for suppressing dendrite growth, elevated-temperature solid-state battery characterization up to 250 °C (sulfide-system cycling, polymer-electrolyte glass-transition studies), and academic studies of solid-electrolyte/electrode interfacial resistance under variable pressure conditions exceeding standard mold ratings.

Specifications:

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

Available Configurations:

Characteristics:

Integrated voltage stabilizing plate for superior pressure stability

The GT03’s defining feature is its integrated voltage stabilizing plate (pressure-stabilizing plate) — a sprung four-column structure that maintains uniform stack pressure across the cell during long-duration cycling, even as electrode stack thickness changes due to lithium plating, electrode expansion, or relaxation. As a result, the GT03 delivers substantially better pressure stability than GT01 and GT02, making it the preferred choice for long-cycle solid-state battery research where consistent stack pressure determines cycling outcomes.

High maximum working pressure (800 MPa)

The GT03 is rated to 800 MPa maximum working pressure — significantly exceeding the 500 MPa rating of GT01 and GT02. Therefore, this mold supports sulfide-electrolyte densification at the upper end of the pressure range, oxide-pellet pressing near full theoretical density (which typically requires 600–800 MPa), and aggressive compaction studies that exceed the capacity of standard mold designs.

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.

Tall, robust form factor for stacked-cell assemblies

With a 40 mm sleeve diameter and 200 mm assembly height, the GT03 features a substantially taller and more robust form factor than GT01 and GT02 — providing additional vertical clearance for thick cell stacks, multi-layer electrode assemblies, and the integrated voltage stabilizing plate. As a result, the GT03 is well-suited for full-cell solid-state battery research where electrode stack thickness, sustained pressure, and long-cycle stability are simultaneously required.

High-strength special-steel pushing rod

The pushing rod is fabricated from high-strength special steel rather than the standard No. 4 mold steel used in GT01 and GT02. Therefore, this upgraded rod material delivers the dimensional stability and fatigue resistance required for sustained operation at 800 MPa — an operational regime that exceeds the safe working envelope of standard mold-steel components.

Excellent insulating property via PEEK sleeve

The polyether ether ketone (PEEK) insulating sleeve provides high dielectric strength to ensure complete electrical isolation between the working and counter electrodes — a critical requirement for accurate electrochemical impedance measurements. Furthermore, PEEK delivers excellent chemical stability and mechanical resilience under the elevated stack pressures generated by the voltage stabilizing plate.

Stainless steel frame for long-term laboratory use

The outer frame is constructed from stainless steel, providing excellent mechanical rigidity, corrosion resistance in glovebox environments, and long service life under repeated assembly/disassembly cycles at high pressure. Therefore, this mold is well-suited for high-throughput laboratory environments where reliability and ease of cleaning are critical.

Customization and modification on request

The GT03 supports customization and modification on request — including custom interior diameters, alternative insulating sleeve materials, modified frame heights, and specialized component arrangements. Therefore, researchers with non-standard 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 pushing rod and the PEEK sleeve to reduce friction. 3. Inside an argon-filled glovebox, load the bottom electrode current collector, then sequentially add cathode powder, solid electrolyte powder/pellet, and anode (lithium foil or anode powder). 4. Insert the top pushing rod and apply the target pressure using a hydraulic press (do not exceed 800 MPa). 5. Engage the voltage stabilizing plate to maintain uniform stack pressure. 6. Tighten the locking screws on the frame to lock in stack pressure during transfer out of the glovebox. 7. Perform electrochemical measurements at the required temperature (do not exceed 250 °C). 8. After testing, release pressure gradually, disassemble in the glovebox, and clean all components with alcohol before storage.

Packaging & Storage:

Each GT03 mold ships fully assembled in a protective foam-lined case with all components, including the stainless steel frame, voltage stabilizing plate assembly, PEEK sleeve, special-steel pushing rods, 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 (800 MPa) or maximum operating temperature (250 °C) — exceeding these limits may result in mold damage, sample loss, or personal injury. The GT03 operates at substantially higher pressures than GT01 and GT02; always wear appropriate PPE (safety glasses, gloves) when applying pressure or operating at elevated temperature, and ensure the voltage stabilizing plate is correctly engaged before pressurizing. 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, pellet 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, GT04 Three-Electrode Solid-State Battery Mold, YP01 Circular Tablet Pressing Die, GT08 In-Situ Optical Battery Observation Cell, YT02 Swagelok Three-Electrode Mold, and YT05 Dual-Electrolyte Swagelok Battery Mold. Browse the full Battery Mold category for all configurations.