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Hitachi

Hitachi High-Tech GLOBAL

Lithium-Ion Rechargeable Battery Solution: Analyzers for R&D

Evaluation of physical properties

Thermal analyzer

TA7000 Series

Measuring thermophysical properties of electrolytes, separators, and exterior materials.

TA7000 series, thermal analyzer, can evaluate the basic thermophysical properties of components such as electrolytes, separators, and exterior materials in lithium-ion batteries. With its thermogravimetry (TG), it is possible to measure the composition ratio of materials and simulate lifetime degradation.

TA7000 Series

This thermal analyzer can also be used for safety evaluation by observation of heat generation behavior of electrolyte and cathode material using differential scanning calorimetry (DSC). Comparing the DSC results, the electrolyte including cathodematerials generates heat at the lower temperature side than electrolyte alone. This is because the oxygen is released by thermal decomposition of cathode and the electrolyte is oxidatively decomposed. In this way, with the use of DSC, you can evaluate the thermal stability of a lithium-ion battery from the observed thermal decomposition onset temperature.

DSC result for electrolyte only, DSC result of cathode material + electrolyte

Concentration Analysis

Atomic absorption spectrophotometer (AA)

ZA3000

Measurement of trace impurity concentrations in materials

With ZA3000, you can obtain highly reliable data by using polarized Zeeman electric heating atomic absorption spectrometry that can accurately correct for background absorption. In addition to measuring the concentration of impurities in the active material, ZA3000 can also measure the concentration of impurities such as Mg in lithium hexafluorophosphate used in electrolytes. It can be applied to research and development of various materials at the battery design stage and quality control during production.

ZA3000

Measurement is possible at the level of trace components (Mg: 1 ppm) in LiPF6.