A model for impedance of the cathode catalyst layer (CCL) with poor electronic conductivity sigma(e) is developed. In the case of small cell current, an analytical expression for the CCL impedance is derived. At small currents, finite ae increases the static cell resistivity by the value 1/(3 sigma(e)). In addition, the CCL exhibits a pure ohmic resistivity, which is equivalent to proton and electronic resistivities connected in parallel. Finite sigma(e) distorts the shape of the Nyquist spectrum in the HF domain; the CCL proton conductivity sigma(p) can no longer be determined simply as a projection of the straight HF line onto the real axis. However, o(p) arid sigma(e) can be tound by fitting the model equations to the experimental spectra.