Structure–performance relationship in copper phthalocyanine-based supercapacitor electrodes: influence of substituent geometry from molecular design to electrochemical function
Articles > Article · 2026
Authors: Şirin Siyahjani-Gültekin, Berivan Arin Öztürmen, Damla Şahin, Gülşah Yilmaz, Bahar Tosun Ercan, Burak GÜLTEKİN, Zekeriya Biyiklioglu
Dalton Transactions, International, WoS, 2026, vol 55, pp 8292-8303
DOI: 10.1039/d5dt02965a
Summary
and retained 80% of its initial capacitance after 5000 cycles. Dunn analysis showed that n-TMe-Cu exhibits a substantially higher surface-controlled contribution than TMe-Cu, indicating that a larger fraction of charge storage proceeds through rapidly accessible interfacial pathways. In conjunction with the observed morphological differences between the two electrodes, these results suggest that non-peripheral substitution promotes a more electrochemically accessible electrode architecture and more favourable charge-storage kinetics. Overall, this study demonstrates that substituent geometry is a key molecular design parameter for regulating electrochemical utilization and rate performance in CuPc-based organic electrode materials.