24 2021.12
Polarization phenomenon in lithium batteries      Polarization is an important issue in chemical power sources, and opinions vary on the understanding of polarization in lithium batteries. Synthesizing documents and materials, we make the explanation as follows:      Voltage plateau reduction during discharge of lithium batteries is mainly resulted from the ohmic resistance and polarization resistance, and the ......
22 2021.12
Proton exchange membrane conductivity measurement   Proton exchange membrane fuel cells (PEMFC) use proton exchange membranes (PEM) as electrolytes, and their performance directly affects the battery performance, energy efficiency and service life of PEMFCs. The ion conductivity of proton exchange membranes is an important indicator of PEM performance. In this paper, the EIS impedance technique is used for testing. The principle is: im......

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