Supplementary Data: Electrochemical and XPS datasets for pyrogenic carbon redox properties across soil depth

Electrochemical and spectroscopic datasets for pyrogenic carbon (PyC) and soil samples, including electron accepting capacity, electron donating capacity and electron exchange capacity across soil depth and treatments; raw X-ray photoelectron spectroscopy intensities together with background and peak deconvolution outputs for PyC and aged PyC; scan rate dependent cyclic voltammetry parameters used for kinetic analysis and the derived electron transfer rate constants (kc) for PyC, aged PyC, and control versus PyC amended soils in topsoil and subsoil horizons; and raw CV curves for PyC, aged PyC, and for control and PyC amended soils from topsoil and subsoil at multiple scan rates.