ATOMFAIR® 304/316L Stainless Steel Conductive Spacers

RESEARCH GRADE MATERIAL

Product Overview

Premium 304/316L stainless steel conductive spacers (15.8 × 0.5 mm) for battery research. Manufactured from high-grade stainless steel compliant with ASTM A240, featuring dimensional tolerance ±0.02 mm, superior flatness, and excellent corrosion resistance to ensure uniform current distribution across electrode interfaces. The 304 variant offers high mechanical strength and general corrosion resistance for most routine testing scenarios, while the 316L variant provides enhanced sulfide/chloride ion corrosion resistance and high-temperature tolerance for demanding electrochemical environments. Customizable sizing variants are available upon request. If you require other sizes, models, and materials, please email inquiry@atomfair.com for customization.

ATOMFAIR® 304/316L Stainless Steel Conductive Spacers

ITEM	DESCRIPTION
Product Name	ATOMFAIR® 304/316L Stainless Steel Conductive Spacers
Material Options	304 Stainless Steel / 316L Stainless Steel (Compliant with ASTM A240)
Dimensions (Diameter × Thickness)	15.8 × 0.5 mm (Default)
Model Compatibility	CR2032 (Compatible with all CR20 Series Internal Dimensions)
Packaging Specification	1000 Pieces/Pack
Core Performance Parameters	Dimensional Tolerance ±0.02 mm High Mechanical Strength Superior Flatness for Uniform Current Distribution 304: General Corrosion Resistant 316L: Sulfide/Chloride Ion Corrosion Resistant, High Temperature Resistant
Optimal Application Scenarios	304: Most routine testing, aqueous batteries, low-to-medium voltage systems 316L: Sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, long-term cycling tests
Customization Options	For other sizes, models, and materials, please email inquiry@atomfair.com 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 most routine electrochemical testing scenarios, aqueous batteries, low-to-medium voltage systems, sulfide solid-state batteries, high-voltage batteries, highly corrosive systems, and long-term cycling tests requiring uniform current distribution.

PACKAGING: 1000 pieces/pack. 100% dimensional inspection, flatness verification, surface quality inspection, 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 inquiry@atomfair.com 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 inquiry@atomfair.com 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	Kapton 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 inquiry@atomfair.com 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 inquiry@atomfair.com 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	Kapton 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 quotations.

EMAIL: inquiry@atomfair.com

Manufacturer: Atomfair LLC

Brand: ATOMFAIR®

Stainless Steel Conductive Spacers

304/316L Stainless Steel Conductive Spacers 15.8×0.5mm ATOMFAIR®