The stability rate of 75% for the CoNi-LDH@Co-MOF composite, which is considered low, could be due to several factors. One possible reason is the inherent structural mismatch between CoNi-LDH and Co-MOF, leading to mechanical stress and degradation during electrochemical cycling. Additionally, the weak interfacial bonding between the LDH layers and the MOF framework might result in poor adhesion, causing detachment or delamination over time. The composite might also be experiencing significant volume changes during charge-discharge cycles, contributing to mechanical instability. Chemical instability, particularly the dissolution of LDH in the electrolyte, could further degrade the composite's performance. Electrochemical reactions within the composite might lead to the formation of by-products or changes in oxidation states that negatively impact stability.

Thank you, Muhammad Zubair Nawaz, for your response.