Au-Coated CR20 Coin Cell Case Sets 0.5–2μm ATOMFAIR®

ATOMFAIR AU-COATED COIN CELL CASE SETS 0.5-2ΜM GOLD

RESEARCH GRADE MATERIAL

Product Overview

ATOMFAIR® Au-Coated Coin Cell Case Sets 0.5-2μm Gold is a coin cell case set for battery research and laboratory procurement. Key specifications include Product Name: ATOMFAIR® Au-Coated Coin Cell Case Sets; Case Material & Coating: Gold-Coated (0.5–2 μm, Contact Resistance ≤1 mΩ) on 316L/304 Stainless Steel Substrate; Included Components: Au-Coated Positive Case + Au-Coated Negative Case + 15.8 × 0.5 mm Spacers + 15.4 × 1.1 mm Springs; Packaging Specification: 10 Sets/Pack; Customization Options: For other sizes, models, and materials, please email to request customization.. It is organized for Lab Accessories & Consumables workflows.

ATOMFAIR® Au-Coated Coin Cell Case Sets

ITEM	DESCRIPTION
Product Name	ATOMFAIR® Au-Coated Coin Cell Case Sets
Case Material & Coating	Gold-Coated (0.5–2 μm, Contact Resistance ≤1 mΩ) on 316L/304 Stainless Steel Substrate
Included Components	Au-Coated Positive Case + Au-Coated Negative Case + 15.8 × 0.5 mm Spacers + 15.4 × 1.1 mm Springs
Packaging Specification	10 Sets/Pack
Intended Use	Wide electrochemical window testing, ultra-precision electrochemical experiments, EIS, micro-current testing, in-situ characterization, and rigorous R&D applications
Customization Options	For other sizes, models, and materials, please email to request customization.

Research-Grade Core Quality Advantages

Uniform High-Precision Tolerance Control: All component dimensions strictly controlled within ±0.02 mm, ensuring perfect matching across different batches and components, completely eliminating assembly gaps and uneven pressure issues caused by dimensional errors.
Full Material Gradient Coverage: Provides a complete material selection from basic to high-end, allowing flexible selection based on corrosivity, voltage range, and testing precision requirements of your experimental system, avoiding experimental failure due to mismatched consumables.
Rigorous Electrochemical Compatibility Verification: All materials have undergone constant potential polarization, cyclic voltammetry, and other electrochemical tests to ensure no side reactions within a -0.5 V to 5.0 V voltage range, guaranteeing no interference with battery performance test results.
Standardized Batch Production: Fully automated production and quality control ensures highly consistent product performance within and across batches, effectively reducing experimental systematic errors.

APPLICATION SCOPE: Precision assembly and standardized testing for ultra-precision electrochemical experiments, EIS measurements, micro-current testing, in-situ characterization, and all rigorous R&D applications requiring wide electrochemical windows with superior chemical stability and minimal contact resistance.

PACKAGING: 10 sets/pack. 100% dimensional inspection, coating thickness verification, sealing performance testing, and appearance inspection before shipment, ensuring oil-free, burr-free, and impurity-free conditions. Can be used directly for battery assembly inside gloveboxes.

IMPORTANT NOTICE: This series is a one-stop assembly solution for coin cells dedicated to electrochemical research. Default accompanying accessories are made of 304 stainless steel. If other materials or special dimensions are required, please email for customization.

This series is a one-stop assembly solution for coin cells dedicated to electrochemical research, comprehensively covering the three mainstream models CR2032, CR2025, and CR2016. It provides a full material and specification selection of three core components—positive/negative electrode cases, conductive spacers, and elastic springs. Independent purchase of single components is supported, and pre-matched complete assembly kits are also available. Fully compatible with all cutting-edge research systems, including conventional lithium-ion batteries, sodium-ion batteries, all-solid-state batteries, lithium-air batteries, and high-voltage batteries, it provides standardized hardware support for the accuracy and reproducibility of experimental data.

Important Note: Default accompanying accessories are made of 304 stainless steel. For accessories made of other materials, please email for customization.

I. Positive/Negative Electrode Cases

Type Classification	Material / Special Structure	Compatible Models	Core Performance Parameters	Optimal Application Scenarios
Basic Universal	304 Stainless Steel	CR2032/CR2025/CR2016	Dimensional Tolerance ±0.02 mm Sealing Pressure ≥5 MPa Operating Temp. -40°C to 120°C	Conventional Li-ion/Na-ion batteries, aqueous battery basic testing, batch prototype preparation
Basic Universal	316L Stainless Steel	CR2032/CR2025/CR2016	Dimensional Tolerance ±0.02 mm Sealing Pressure ≥6 MPa Operating Temp. -40°C to 150°C	Sulfide solid-state batteries, high-voltage batteries (>4.5 V), long-term cycling tests, highly corrosive systems
High-Performance Coated	Aluminum Coated	CR2032/CR2025/CR2016	Coating Thickness 5–10 μm Adhesion ≥5B Grade Volume Resistivity ≤3×10⁻⁸ Ω·m	Lightweight batteries, low contact resistance precision testing, systems sensitive to metal ion contamination
High-Performance Coated	Titanium Coated	CR2032/CR2025/CR2016	Coating Thickness 3–8 μm Excellent Biocompatibility Resistant to Strong Acid/Base Corrosion	Bio-batteries, aqueous zinc batteries, strongly acidic/alkaline electrolyte systems
High-Performance Coated	Nickel Coated	CR2032/CR2025/CR2016	Coating Thickness 5–12 μm Excellent Weldability Atmospheric Corrosion Resistant	Battery structures requiring tab welding, pilot-scale batch production, routine electrochemical testing
High-Performance Coated	Gold Coated	CR2032/CR2025/CR2016	Coating Thickness 0.5–2 μm Contact Resistance ≤1 mΩ Superior Chemical Stability	Ultra-precision electrochemical testing, EIS testing, micro-current testing, in-situ characterization
Specialized Research	Li-Air Mesh Type	CR2032/CR2025/CR2016	Pore Size 0.2–0.5 μm Waterproof Rating IP67 Uniform Gas Distribution Design	Lithium-air batteries, lithium-oxygen batteries, gas-involved reaction battery systems
Specialized Research	polyimide Window Type	CR2032/CR2025/CR2016	Window Thickness 25–50 μm Optical Transmittance ≥85% Electrolyte Corrosion Resistant	In-situ optical characterization, in-situ Raman/IR spectroscopy, in-situ microscopy observation

II. Conductive Spacers

Default Size: Φ15.8 × 0.5 mm, compatible with the internal dimensions of all CR20 series cell cases. Other thicknesses and special sizes are customizable; please email for customization.

Material	Available Size (Diameter × Thickness)	Core Performance Parameters	Optimal Application Scenarios
99.5% Industrial Pure Aluminum	Φ15.8 × 0.5 mm (Default)	Dimensional Tolerance ±0.02 mm Volume Resistivity 2.7×10⁻⁸ Ω·m No Electrochemical Side Reactions	Precision experiments requiring high contact resistance, conventional Li-ion/Na-ion batteries
304 Stainless Steel	Φ15.8 × 0.5 mm (Default)	Dimensional Tolerance ±0.02 mm High Mechanical Strength General Corrosion Resistant	Most routine testing scenarios, aqueous batteries, low-to-medium voltage systems
316L Stainless Steel	Φ15.8 × 0.5 mm (Default)	Dimensional Tolerance ±0.02 mm Sulfide/Chloride Ion Corrosion Resistant High Temperature Resistant	Sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, long-term cycling tests

III. Elastic Springs

Default Size: φ15.4 × 0.3 mm, compatible with the internal dimensions of all CR20 series cell cases. Other heights and special sizes are customizable; please email for customization.

Spring Type	Available Materials	Available Size (Diameter × Free Height)	Core Performance Parameters	Optimal Application Scenarios
Wave Spring (Belleville)	Al Coated / 304 SS / 316L SS / Au Coated SS	φ15.4 × 1.1 mm (Default)	Spring Force Range 5 N–30 N Large Contact Area Small Footprint Fatigue Life ≥10,000 cycles	Most routine testing, thin electrodes, low-loading batteries; universal preferred choice
Conical Spring	Al Coated / 304 SS / 316L SS / Au Coated SS	φ15.4 × 1.1 mm (Default)	Spring Force Range 10 N–50 N Good Self-Centering Strong Anti-Buckling Fatigue Life ≥10,000 cycles	Thick electrodes, high-loading batteries, vibration environment testing, systems requiring precise pressure control

IV. Complete Assembly Kit Specifications

Kit Type	Included Components	Corresponding Battery Model	Configurable Options
Standard Assembly Kit	Positive Case + Negative Case + Spacer + Spring	CR2032/CR2025/CR2016	All materials freely combinable Spacer thickness customizable Spring height customizable
Li-Air Dedicated Kit	Mesh Positive Case + Negative Case + Waterproof Breathable Membrane + Spacer + Spring	CR2032/CR2025/CR2016	304/316L SS material optional Spacer thickness customizable Spring height customizable
In-Situ Characterization Kit	polyimide Window Cell Case + Gold Coated Spacer + Gold Coated Spring	CR2032/CR2025/CR2016	Window thickness optional Spacer thickness customizable Spring height customizable

International Quality Standards

Stainless steel materials comply with ASTM A240 international standard.
Pure aluminum materials comply with ASTM B209 international standard.
All coating thicknesses are uniform, with adhesion meeting ASTM B571 standard.
100% dimensional inspection, sealing performance testing, and appearance inspection before shipment.
Oil-free, burr-free, and impurity-free; ready for direct use in glovebox battery assembly.

TAILORED SOLUTIONS FOR RESEARCH

Contact our engineering team for technical support or official institutional quotations.

EMAIL: INQUIRY@ATOMFAIR.COM

Manufacturer: Atomfair LLC

Brand: ATOMFAIR®

The gold-coated cases are validated for electrochemical stability within -0.5 V to 5.0 V. The components are delivered oil-free and burr-free for direct glovebox use.

Electrochemical Voltage Window: The gold-coated stainless steel cases exhibit no side reactions within a -0.5 V to 5.0 V voltage range.
Contact Resistance: The gold coating maintains a contact resistance ≤1 mΩ when free from contamination and mechanical damage.
Dimensional Tolerance: All case and accessory components are manufactured to ±0.02 mm tolerance for consistent assembly pressure.
Surface Cleanliness: The cases are supplied oil-free, burr-free, and impurity-free for immediate assembly in glovebox environments.
Chemical Stability: The 316L/304 stainless steel substrate and gold coating provide superior chemical stability against common battery electrolytes.

FAQ

How does the 0.5–2 μm gold coating thickness on these coin cell cases affect their electrochemical performance in ultra-precision EIS testing?

The gold coating thickness of 0.5–2 μm achieves a contact resistance of ≤1 mΩ, providing superior chemical stability that minimizes interfacial noise. This enables accurate, low-impedance measurements in ultra-precision EIS and micro-current testing without side reactions within the verified -0.5 V to 5.0 V electrochemical window.

Are these Au-coated coin cell case sets compatible with standard CR2032, CR2025, and CR2016 battery configurations?

Yes, they are fully compatible with all CR20 series models. The included spacers (Φ15.8 × 0.5 mm) and wave springs (φ15.4 × 1.1 mm) are the standard internal dimensions for CR2032, CR2025, and CR2016 coin cells, and the gold-coated cases themselves are designed for these form factors.

What pre-assembly preparation is required for these gold-coated coin cell cases before use in a glovebox?

No additional preparation is needed. Each set undergoes 100% dimensional inspection, coating thickness verification, and sealing testing, ensuring an oil-free, burr-free, and impurity-free condition. They can be directly transferred into a glovebox and used immediately for battery assembly.

Assessment

ATOMFAIR Au-Coated Coin Cell Case Sets (0.5-2 μm gold on 316L/304 SS) provide ultra-low contact resistance (≤1 mΩ) and wide electrochemical stability (-0.5V to 5.0V) for high-precision EIS and micro-current testing. However, the included spacers and springs are standard 304 stainless steel, not gold-coated, and the thin gold coating requires careful handling to avoid abrasion.

Positive

Ultra-low contact resistance gold coating: Gold coating thickness of 0.5–2 μm achieves contact resistance ≤1 mΩ, enabling precise electrochemical impedance spectroscopy (EIS) and micro-current measurements with minimal ohmic drop.
Wide electrochemical stability window: All materials are verified free of side reactions from -0.5 V to 5.0 V, ensuring no interference in rigorous R&D applications such as high-voltage or wide-potential-window testing.

Trade-offs

Default spacers/springs are 304 SS, not gold-coated: The included spacers and springs are made of 304 stainless steel, which may introduce dissimilar metal contact and increase overall cell resistance unless customized to gold-coated alternatives.
Thin gold coating requires careful handling: The 0.5–2 μm gold layer is soft and can be scratched or worn during repeated assembly or if debris is present, potentially degrading contact reliability over time.

Quality Standards & Performance Verification

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Shipping & Returns

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).