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ATOMFAIR® a very large pile of circular silver colored pure aluminum battery conductive spacers scattered on a white background.

Pure Aluminum Battery Spacers 15.8×0.5mm 99.5% ATOMFAIR®

$114.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Research grade 99.5% pure aluminum spacers (15.8×0.5mm) per ASTM B209. Tolerance ±0.02 mm, resistivity 2.7×10⁻⁸ Ω·m. For CR2032 coin cells. Order now.

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Description

ATOMFAIR® Pure Aluminum Battery Conductive Spacers

RESEARCH GRADE MATERIAL

Product Overview
Premium pure aluminum conductive spacers (15.8 × 0.5 mm) for battery research. Manufactured from 99.5% industrial pure aluminum with dimensional tolerance ±0.02 mm and volume resistivity 2.7×10⁻⁸ Ω·m, featuring no electrochemical side reactions within standard operating windows. Engineered to provide superior conductive contact and electrochemical stability to effectively suppress high-voltage current collector corrosion, delivering standardized hardware support for precision experiments requiring high contact resistance performance. Customizable sizing variants are available upon request. If you require other sizes, models, and materials, please email inquiry@atomfair.com for customization.

ATOMFAIR® Pure Aluminum Battery Conductive Spacers
ITEM DESCRIPTION
Product Name ATOMFAIR® Pure Aluminum Battery Conductive Spacers
Material 99.5% Industrial Pure Aluminum (Compliant with ASTM B209)
Dimensions (Diameter × Thickness) 15.8 × 0.5 mm (Default)
Model Compatibility CR2032 (Compatible with all CR20 Series Internal Dimensions)
Packaging Specification 100 Pieces/Pack
Core Performance Parameters Dimensional Tolerance ±0.02 mm
Volume Resistivity 2.7×10⁻⁸ Ω·m
No Electrochemical Side Reactions
High Mechanical Strength
Optimal Application Scenarios Precision experiments requiring high contact resistance, conventional Li-ion/Na-ion batteries, and protection of high-voltage current collectors
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 experiments requiring high contact resistance performance, conventional Li-ion/Na-ion battery research, and protection of high-voltage current collectors in demanding electrochemical environments.
PACKAGING: 100 pieces/pack. 100% dimensional inspection, surface quality verification, 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®

This spacer must be used within standard electrochemical operating windows to prevent side reactions. It is specifically dimensioned for CR20 series coin cell assemblies with a tolerance of ±0.02 mm.

  • Compatibility Constraint: The spacer is compatible only with CR20 series coin cell assemblies; deviation may cause poor contact.
  • Handling Precision: The ±0.02 mm dimensional tolerance must be preserved during handling to ensure consistent performance.
  • Operating Window: Electrochemical stability is maintained only within standard operating windows; exceeding these may induce side reactions.

How does the ±0.02 mm dimensional tolerance of ATOMFAIR pure aluminum spacers affect contact pressure uniformity and experimental reproducibility in coin cell assembly?

The ±0.02 mm tolerance ensures uniform contact pressure across the electrode stack by eliminating assembly gaps and uneven loading between batches. This strict dimensional control directly reduces systematic errors in electrochemical testing, as verified by 100% dimensional inspection before shipment.

Are ATOMFAIR pure aluminum spacers electrochemically compatible with sodium-ion battery electrolytes and high-voltage cathode materials?

Yes, these spacers are specifically optimized for conventional Li-ion and Na-ion battery research. They have been verified by constant potential polarization and cyclic voltammetry to exhibit no electrochemical side reactions within the -0.5 V to 5.0 V window, making them suitable for protecting high-voltage current collectors in demanding electrolytes.

Can ATOMFAIR pure aluminum spacers be used directly in an argon-filled glovebox without additional cleaning or surface treatment?

Yes, the spacers are shipped oil-free, burr-free, and impurity-free after 100% dimensional and surface quality inspection. They are designed for direct use in battery assembly inside gloveboxes, eliminating the need for pre-cleaning or surface preparation.

These pure aluminum spacers (99.5%) provide precise dimensional tolerance (±0.02 mm) and verified electrochemical stability from -0.5 V to 5.0 V, making them suitable for standard coin cell testing; however, the 0.5 mm thickness demands careful handling to avoid deformation, and performance beyond the tested voltage window may introduce side reactions.

Positive

  • High-precision dimensional tolerance: All spacers are held to ±0.02 mm tolerance, ensuring consistent mechanical contact and eliminating assembly gaps across batches.
  • Verified electrochemical compatibility: Constant potential and cyclic voltammetry tests confirm no side reactions within -0.5 V to 5.0 V, preventing interference in Li-ion/Na-ion cell performance.

Trade-offs

  • Thin geometry requires careful handling: The 0.5 mm thickness and pure aluminum construction make the spacers susceptible to bending or deformation if not handled with proper tweezers or during automated assembly.
  • Limited voltage window for absolute stability: Electrochemical stability is only verified between -0.5 V and 5.0 V; outside this range (e.g., high-voltage cathodes >5 V) aluminum may corrode or participate in side reactions.

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.

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

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