ECS-HC Heating Split Testing Cell (Max. 200ºC, Φ10-30 mm), EHCHSTC Split Testing Cell (3-40 mm), EHCHRDPPDT500 (Copy)

A heating die for split coin cell testing (often referred to as a heated split-test cell or temperature-controlled pressure cell) is a specialized test fixture used in laboratory R&D. Unlike standard disposable CR2032 coin cells—which are crimped shut permanently—a split cell allows researchers to assemble, press, heat, electrochemically test, and disassemble battery materials without crimping. Adding an integrated heating jacket or internal cartridge heaters allows testing under controlled thermal and stack-pressure conditions.

Its key features are: (1) Heated Jacket/Collar: Wrapped heating bands or internal cartridge heaters surrounding the main stainless steel or titanium cell body, typically operating from ambient up to 150ºC-250ºC. (2) PID Temperature Controller: Uses an embedded thermocouple (K-type) sitting close to the sample cavity for precise temperature control (± 0.5 ºC). (3) Variable Pressure/Compression Spring: Features a top screw platen or calibrated spring mechanism to apply controlled stack pressure (ranging from a few MPa up to 100 MPa) during testing. (4) Electrical Insulation & Current Collectors: High-temperature PEEK or ceramic sleeves isolate the positive and negative poles, while gold-plated or titanium plungers act as current collectors and chemical-resistant contact faces.

The primary application fields are: (1) Solid-State Battery (SSB) R&D: Sulfide, halide, and oxide solid electrolytes often require elevated temperatures (50ºC-100ºC to boost ionic conductivity during Electrochemical Impedance Spectroscopy (EIS) and galvanostatic cycling. (2) Phase Transition & Thermal Stability: Evaluating rate performance, interfacial impedance, and lithium dendrite suppression under combined thermal and mechanical stack pressure. (3) In-Situ Degradation Diagnostics: Easy disassembly after cycling allows post-mortem characterization (SEM, XPS, XRD) of pristine electrode-electrolyte interfaces without damaging the sample during cell opening.