Battery R&D Services

Battery Cell Assembly & Testing

NEI offers cost-effective and comprehensive battery characterization & electrochemical testing services, which includes custom electrode sheet fabrication, as well as lithium-ion coin cell and pouch cell fabrication and testing. Our extensive battery research and characterization facility, with multi-channel cell testers, provide you with the tools you need to implement your materials into the next generation of batteries.

The product engineers and scientists at NEI have extensive backgrounds in fundamental materials science and battery testing at the cell level, enabling us to make correlations between materials characteristics and cell performance. This unique ability, coupled with our vast experience in manufacturing custom tailored materials, helps us offer you insight in to how to better optimize your materials in order to attain the best cell performance.

Describe your battery testing needs to us by completing the Request Form and a representative will get back to you immediately – all work is done in a highly confidential manner (view & download our NDA).

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Testing Services

NEI offers the following electrochemical testing services:

  • Cycle life
  • Voltage profile
  • Charge and discharge cycling
  • Rate capability
  • Cyclic voltammetry (CV)
  • Electrochemical Impedance Spectroscopy (EIS) at RT
  • Electrochemical Impedance Spectroscopy (EIS) vs. Temperature (-10°C to +150°C)
  • Customize electrolyte’s composition
  • Cell testing at different temperatures (-20°C to +100°C)
  • Separator variation – thickness, material
  • Cell failure analysis
Electrode Fabrication

NEI’s battery cell preparation and testing includes industry standard tape coating. Electrode tapes can be custom fabricated to the customer’s specification, including modifications in the composition of the tapes, such as:

  • Active material loading (80 – 95%)
  • Coating / tape thickness
  • Tape porosity or density
  • Binder type (aqueous / non-aqueous)
  • Binder content
  • Choice of current collector
Cell Fabrication Services
Some of the Cell Fabrication services that NEI provides, includes:
  • 2032 Coin Cells – choice of anode chemistry, Li, Li-ion, Silicon, Oxide
  • Pouch Cells – up to 2 Ah with standard and custom cell components
  • Use customer’s active and passive materials to fabricate coin and pouch cells
  • Modify electrolyte composition to avoid/mitigate gassing and side reactions
Available Services

A full list of our battery characterization & cell testing services can be found in the table below.

Characterization / Test

Options

Lead Time
Half & Full Cell Testing (coin & pouch cells)• Capacity (under constant current) at room temperature
• Capacity (under constant current) at high or low temperatures
• Capacity retention (under different current densities) at room temperature
• Capacity retention (under different current densities) at high or low temperatures
• Rate capability testing
• Cycle life		• Varies (depending on parameters)
• Varies (depending on parameters)
• Varies (depending on parameters)
• Varies (depending on parameters)
• Varies (depending on parameters)
• Varies (depending on parameters)
Ionic Conductivity• Single point (room temperature)
• Multiple points (-20°C to 100°C)		• 2 - 3 business days
• 4 - 5 business days
Electrochemical Impedance Spectroscopy (EIS)• Temperature Range: -10°C to 150°C• 3 - 5 business days
Particle Size Analysis (Microtrac S3500)
(Range: 10nm - 1000μm)		• Water-based Dispersion
• Alcohol-based (ethanol or isopropanol)
• Special Solvent		• 3 - 5 business days
• 3 - 5 business days
• Varies (contact)
BET Surface Area• Single Point
• Multiple Points
• Pore Size Distribution (need multiple points)		• 3 - 5 business days
• 3 - 5 business days
• 3 - 5 business days
X-ray Diffraction (XRD)• XRD Pattern Acquisition
• Data Analysis (phase identification)
• Data Analysis (crystallite size)
• Crystal Density		• 1 - 2 business days
• 2 - 3 business days
• 1 - 2 business days
• 1 - 2 business days
Thermal Gravimetric Analysis (TGA)• One Heating Condition
• Multiple Heating Conditions (different rate, soak, or temperature)		• 3 - 5 business days
• Varies (contact)
Differential Scanning Calorimetry (DSC)• Glass Transition Temperature and Melting Point of Polymer
• Enthalpy		• 2 - 3 business days
• Varies (contact us)
Infrared Spectroscopy• Transmission Range (Wavenumber: 500 - 4000 cm-1)
• IR spectra functional group analysis		• 1 - 2 business days
• 4 - 5 business days
Scanning Electron Microscopy (SEM)• 3 Micrographs (200x - 50,000x)
• Each Additional Micrograph
• Elemental Mapping (EDS at a single magnification)		• 5 - 10 business days
• Varies (contact)
• Varies (contact)
Optical Microscopy• Bright field (Mag.: 50x, 200x, 500x, & 1000x)
• Additional images using light polarizer
• Interference contrast image
• Dark field images		• 2 - 3 business days
• 2 - 3 business days
• 2 - 3 business days
• 2 - 3 business days
UV-Vis Spectroscopy (Range: 190 - 1100 nm)• Water soluble solids• 1 - 2 business days
Tap Density• N/A• 1 business day
Powder Density (Helium Pycnometer)• N/A• 1 - 2 business days
Quote Form

Quote Form

Describe your battery cell testing needs to us by completing the form below (* – required fields). Your intellectual property rights are fully protected at all times.

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