Three Electrode Electrochemical Voltage Spectroscopy (TEVS): evaluation of a model lithium ion system

摘要: Abstract Lithium ion cells incorporate two intercalation type electrodes which each demonstrate voltage profiles are directly dependent on their relative states-of-charge. A new electrochemical technique, Three Electrode Electrochemical Voltage Spectroscopy (TEVS) is described allows detailed information to be derived for both within a single experiment. Only minor modifications conventional electrode cell designs necessary implementation of this technique. During the experimental procedure, pseudo-open circuit (ocv) and corresponding differential capacity plots can collected. model lithium cell, namely Li 1 − x Mn 2 O 4 + system, has been initially investigated using This system cycled utilizing approximate 3 V vs. ranges. Around = 0.68 in Li1 xMn2O4 was under prevailing TEVS test conditions. The collected data compared previously reported findings two-electrode utilized counter electrodes.