In full cells, anode and cathode may contribute to capacity fade and "capacity loss". Electrolyte oxidation makes a minor contribution to low Coulombic efficiencies of cathodes at high voltage. The type of active material, rather than the cut-off and operation potentials determine HV performance. The practical cathode capacity should be derived from the charge capacity, and not from the discharge capacity. The contribution of Active Lithium Losses (Q_(ALL)) to Irrev. Capacities (Q_(IRR) and Q_(AIC)) can be determined → "IRLC-Method". Simple, but in the community uncommon electrochemical techniques reveal that "common wisdom" may need a thorough re-thinking.
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