Fig. 4
From: Probing electrochemical reactions in organic cathode materials via in operando infrared spectroscopy

Electrochemical performance of Mg–PAQS battery and the ATR difference spectra. a Specific capacity (left y-axis) and Coulombic efficiency (right y-axis) with cycle number for PAQS in Mg–organic battery. b Selected galvanostatic discharge/charge cycles for the same battery. c Selected difference spectra for the PAQS cathode during cycling in the Mg battery