xoptix 220P Online Particle Size Analyzer for Battery Electrode Materials

Overview

The xoptix 220P Online Particle Size Analyzer is an industrial-grade, in-line laser diffraction system engineered for continuous, real-time characterization of particle size distribution (PSD) in battery electrode material production streams. Deployed directly in slurry lines or powder conveying systems, it operates without sample extraction or dilution—enabling true process analytical technology (PAT) implementation per FDA Guidance for Industry on PAT (2004). The instrument utilizes a robust, temperature-stabilized He-Ne laser source and a high-resolution multi-element detector array to capture forward- and side-scattered light patterns. These raw angular intensity profiles are processed using Mie theory-based inversion algorithms to generate volume-weighted PSD data (D10, D50, D90, span, and distribution width), updated at user-configurable intervals (1–60 seconds). Its optical design minimizes sensitivity to air bubbles, agglomerate breakage, and flow turbulence—critical for stable operation in high-viscosity cathode slurries (e.g., NMC, LFP, or silicon-carbon composites) and anode slurries containing graphite or lithium titanate.

Key Features

• In-line, non-invasive measurement via flow-through quartz measurement cell rated for pressures up to 10 bar and temperatures from 5 °C to 60 °C
• Automatic optical alignment and real-time drift compensation using internal reference beam monitoring
• IP65-rated stainless-steel housing with explosion-proof option (ATEX/IECEx Zone 2 certified variants available)
• Integrated ultrasonic probe for in situ de-agglomeration control during slurry measurement (optional)
• Self-diagnostic firmware with optical path integrity alerts, lens fouling detection, and laser power trending
• Calibration traceable to NIST-traceable PSL standards; factory verification report provided with each unit

Sample Compatibility & Compliance

The xoptix 220P supports continuous monitoring of aqueous and NMP-based electrode slurries (solid content 30–70 wt%), dry active materials (e.g., LiCoO₂, LiFePO₄, synthetic graphite), and binder-dispersed powders. It accommodates particle size ranges from 0.1 µm to 2,000 µm with sub-micron resolution in the fine fraction. All wetted parts conform to USP Class VI and FDA 21 CFR Part 110 requirements for pharmaceutical/battery-grade material contact. The system architecture complies with ISA-88 and ISA-95 frameworks for batch and continuous process integration. Data acquisition and reporting support ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and include full electronic audit trails for GLP/GMP-regulated environments.

Software & Data Management

The analyzer ships with xoptix ProcessView™ software—a Windows-based platform supporting local HMI operation and centralized server deployment. It provides real-time trend dashboards, SPC charting (X-bar/R, Cpk/Ppk), and automated deviation alerts triggered by user-defined PSD thresholds. Raw scattering data and processed distributions are stored in HDF5 format with embedded metadata (timestamp, flow rate, temperature, operator ID). Integration with MES/SCADA systems is achieved via OPC UA, Modbus TCP, or RESTful API. All software modules comply with FDA 21 CFR Part 11 requirements, including role-based access control, digital signature enforcement, and immutable record archiving.

Applications

• Real-time feedback control of milling and homogenization steps in cathode/anode slurry preparation
• Detection of agglomeration onset during slurry aging or storage
• Verification of batch-to-batch consistency prior to coating operations
• Correlation of in-line PSD trends with final electrode density, porosity, and electrochemical performance (e.g., C-rate capability, cycle life)
• Supporting DOE studies for binder selection, solvent ratio optimization, and dispersion protocol validation

FAQ

Can the xoptix 220P be installed on existing slurry lines without process interruption?
Yes—its clamp-mounted flow cell allows hot-tap installation using standard sanitary or tri-clamp fittings; no welding or line shutdown required.
Does it require periodic recalibration during routine operation?
No—built-in optical self-checks and reference beam stabilization eliminate routine recalibration; annual verification against traceable standards is recommended.
Is the system compatible with high-NMP-content cathode slurries?
Yes—the wetted materials (quartz, Hastelloy C-276, FKM seals) are chemically resistant to NMP, PVDF solutions, and conductive carbon dispersions.
How is data security ensured in regulated manufacturing environments?
ProcessView™ supports TLS 1.2 encryption, Windows Active Directory integration, and configurable retention policies aligned with 21 CFR Part 11 Annex 11 requirements.
Can it distinguish between primary particles and soft agglomerates in graphite slurries?
Within its operational hydrodynamic shear window (Re < 2,000), it reports hydrodynamic equivalent diameter; complementary offline SEM/DLS validation is recommended for mechanistic agglomerate analysis.