Editorial Technical Reference

Electrode Assembly

This page explains how Electrode Assembly is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A critical component within a solid-state cell module that facilitates electrochemical reactions by providing conductive pathways for electron and ion transfer.

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Product Specifications

Technical details and manufacturing context for Electrode Assembly

Definition
The electrode assembly is a core structural and functional element of a solid-state cell module, consisting of anode and cathode layers separated by a solid electrolyte. It enables the storage and release of electrical energy through reversible electrochemical reactions, with the solid-state design offering enhanced safety, energy density, and thermal stability compared to liquid electrolyte systems. The assembly typically includes current collectors made of copper or aluminum foil, which serve as the external electrical interface. The anode material is commonly lithium metal or graphite, while the cathode is a lithium transition metal oxide. The solid electrolyte, which can be ceramic or polymer-based, provides ionic conductivity while preventing direct contact between the electrodes. This configuration mitigates risks such as dendrite formation and thermal runaway, which are concerns in conventional liquid electrolyte batteries. The electrode assembly is characterized by parameters such as rated capacity (50–200 Ah), nominal voltage (3.2–3.7 V), internal resistance (0.5–5 mΩ), operating temperature (-20 to 60 °C), maximum charge and discharge rates (1–3 C and 3–10 C, respectively), cycle life (2000–5000 cycles at 80% depth of discharge), electrode thickness (50–200 µm), active material loading (10–30 mg/cm²), porosity (25–45%), tensile strength (10–50 MPa), electrode dimensions (100–300 mm), and weight (50–500 g). These values are reference ranges that must be confirmed for the specific model and application. The assembly is designed to meet standards such as IEC 62660-1, IEC 62660-2, and IEC 61951-1, which serve as procurement and verification references. For any application, it is essential to verify model-specific values and standards with the legal manufacturer or supplier.
Working Principle
During charging, lithium ions migrate from the cathode through the solid electrolyte to the anode, where they are stored. During discharging, ions move back to the cathode, releasing electrons that flow through an external circuit to power devices. The solid electrolyte prevents dendrite formation and thermal runaway.
Common Materials
Lithium metal or graphite (anode), Lithium transition metal oxide (cathode), Ceramic or polymer solid electrolyte, Current collectors (copper/aluminum foil)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Capacity50–200 AhDetermines energy storage capabilityIEC 62660-1
Nominal Voltage3.2–3.7 VTypical for Li-ion chemistriesIEC 62660-1
Internal Resistance0.5–5 Lower is better for power deliveryIEC 61951-1
Operating Temperature-20–60 °COutside range degrades performanceIEC 62660-2
Max Charge Rate1–3 CHigher C-rate enables faster chargingIEC 62660-1
Max Discharge Rate3–10 CSustained high rates generate heatIEC 62660-1
Cycle Life2000–5000 cyclesAt 80% depth of dischargeIEC 62660-1
Electrode Thickness50–200 µmAffects energy density and rate capability
Active Material Loading10–30 mg/cm²Higher loading increases capacity but reduces rate
Porosity25–45 %Critical for electrolyte wetting
Tensile Strength10–50 MPaEnsures mechanical integrity during windingASTM D882
Electrode Dimensions100–300 mmLength and width per cell design
Weight50–500 gAffects gravimetric energy density

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Anode Layer Part
    Stores lithium ions during charging and releases them during discharging
    Material: Lithium metal or graphite composite
  • Cathode Layer Part
    Provides lithium ions during charging and accepts them during discharging
    Material: Lithium transition metal oxide (e.g., NMC, LFP)
  • Solid Electrolyte Separator
    Conducts lithium ions while preventing electrical short circuits
    Material: Ceramic (e.g., LLZO) or polymer electrolyte
  • Current Collectors Part
    Provide electrical connection to external circuit
    Material: Copper foil (anode), Aluminum foil (cathode)

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 5 bar
temperature: -20°C to +60°C
slurry concentration: Up to 60% solids by weight
Media Compatibility
✓ Lithium-ion electrolytes ✓ Solid polymer electrolytes ✓ Ceramic solid electrolytes
Unsuitable: Aqueous acidic environments
Sizing Data Required
  • Cell voltage requirement
  • Current density specification
  • Electrode active material loading

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Electrical arcing damage
Cause: Insufficient insulation or improper gap maintenance leading to uncontrolled electrical discharge, causing localized melting and pitting of electrode surfaces.
Thermal fatigue cracking
Cause: Repeated heating and cooling cycles during operation causing expansion/contraction stresses that exceed material endurance limits, particularly at joints or material transitions.
Maintenance Indicators
  • Irregular or unstable electrical readings (voltage spikes, current fluctuations) during normal operation
  • Visible discoloration (blueing or blackening) or surface degradation on electrode surfaces
Engineering Tips
  • Implement regular infrared thermography inspections to detect abnormal thermal patterns and prevent thermal stress failures before they occur
  • Establish precision cleaning protocols using appropriate solvents and methods to prevent contamination buildup that can lead to arcing or insulation breakdown

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ASTM E3-11 - Standard Guide for Preparation of Metallographic Specimens CE Marking - Directive 2014/35/EU (Low Voltage Directive)

Quoted from the published standard.

Manufacturing Precision
  • Electrode gap: +/-0.05mm
  • Surface roughness: Ra 0.8μm max
Quality Inspection
  • Dimensional verification with CMM (Coordinate Measuring Machine)
  • Electrical resistance testing per ASTM B193

Manufacturers of Electrode Assembly

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Frequently Asked Questions

What materials are used in the electrode assembly?

The anode is typically lithium metal or graphite, the cathode is a lithium transition metal oxide, and the solid electrolyte is ceramic or polymer-based. Current collectors are copper or aluminum foil.

What are the typical rated capacity and voltage ranges?

The rated capacity ranges from 50 to 200 Ah, and the nominal voltage is between 3.2 and 3.7 V, according to IEC 62660-1.

How does the solid electrolyte improve safety?

The solid electrolyte prevents dendrite formation and thermal runaway, which are risks in liquid electrolyte systems, thereby enhancing safety and thermal stability.

Which standards apply to this component?

Relevant standards include IEC 62660-1 for capacity and voltage, IEC 62660-2 for operating temperature, and IEC 61951-1 for internal resistance. These are verification references; actual compliance must be confirmed with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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