Electrochemical Characterization of Batteries

The charge of 2 mole of Li when it oxidizes to LI⁺ is ______ Ah

Mathematical Equivalence

ON

During EIS (Electrochemical Impedance Spectroscopy), the current leads voltage by _______⁰ for a capacitor

Mathematical Equivalence

ON

If the solution resistance between the anode and the cathode is 10 mΩ, when 10 C passes continuously every second, the IR drop is _________ mV.

Mathematical Equivalence

ON

If a capacitor is charged at 100 mA, it goes from 0 to 1 V at 10 mV/s scan rate. Calculate the charge stored in the capacitor (in coulomb).

Mathematical Equivalence

ON

In a Li | electrolyte | Li symmetric cell, if the initial and steady-state currents are 100 mA and 50 mA respectively. Calculate the transport number of Li⁺, assuming the interface has not changed during the measurement.

Mathematical Equivalence

ON

The correct expression for the impedance of the R-C parallel circuit is

What is the impedance of an RC parallel circuit at infinite frequency?

Mathematical Equivalence

ON

Mathematical Equivalence

ON

A supercapacitor initially has a voltage of 0 V. When charged at 100 mA, the voltage increases with a slope of 10 mV/s up to 1 V. Once the supercapacitor is fully charged, when it is allowed to reach a steady state, its voltage is 0.8 V. When discharged at the same rate of 100 mA, it takes the same amount of time as charging to discharge completely. What is the slope of the discharge curve in mV/s?

Mathematical Equivalence

ON

After being fully charged to 1 V, a supercapacitor relaxes to 0.8 V and discharges back to 0 V at the same current as charging current, but in half the time of charge. If the voltage efficiency of the system is 80%, what is its energy efficiency in percentage?

Mathematical Equivalence

ON