[Carbon Bao said] New idea for silicon-based anode design: asphalt light component inhibits silicon volume expansion through self-delithiation
Release time:
2024-04-07
Silicon has received widespread attention due to its ultra-high theoretical specific capacity, but the huge volume change during silicon intercalation and deintercalation leads to rapid electrode failure. Carbon coating can effectively solve this problem, and the mechanical limitation provided by carbon coating reduces the volume change caused by repeated expansion and contraction of silicon, and avoids the occurrence of irreversible side reactions. Among the many carbon sources, pitch-derived carbon has been proven to be a robust coating that can withstand large expansion stresses during lithium intercalation.
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