Cryoporometry for short T ₂ samples: A T ₁ filter method applied to battery electrode characterization.

ABSTRACT: The pore size distribution is often an important parameter for transport processes in porous media. Cryoporometry experiments can provide such data in the meso and macropore size up to 1 μm providing the sample temperature is finely controlled. We use a Peltier based system inserted directly into the NMR probe to control the temperature within 0.05 °C and impose temperature ramps down to 0.002 °C/min, necessary to characterize the largest pore sizes. The pore size information in the macropore range cannot be obtained from gas adsorption techniques while mercury injection is questionable for the material considered here. For porous materials made of paramagnetic minerals such as lithium-iron phosphate (LiFePO₄, LFP) or nickel-manganese-cobalt oxides (NMC) and saturated with octam

SUBMITTER: Fleury M 

PROVIDER: S-EPMC12848263 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature