Incremental Capacity Analysis (ICA) is a powerful technique used to identify specific degradation modes in lithium-ion batteries by analyzing the derivative of the battery's capacity with respect to voltage (dQ/dV) during a slow, constant-current charge or discharge. This derivative reveals distinct peaks and valleys in the voltage range, each corresponding to specific phase transitions or electrochemical reactions within the battery. Changes in the position, height, and shape of these features over time provide valuable insights into the types and extent of degradation occurring within the battery. In a healthy lithium-ion battery, the ICA curve exhibits well-defined peaks associated with specific lithium intercalation/deintercalation processes at the positive and negative electrodes. As the battery degrades, these peaks shift, broaden, or diminish, indicating ch....
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