Park, Jaehyun Joo, Se Hun Kang, Minsung Park, Ju Hyun Kim, Bumjung Kwak, Sang Kyu Ahn, Seokhoon Kang, Seok Ju 2024-01-19T10:32:40Z 2024-01-19T10:32:40Z 2023-01-03 2022-12 2380-8195 https://pubs.kist.re.kr/handle/201004/114224 We investigate the potential of a methoxy-group-coordinated contorted hexabenzocoronene (OCH3- cHBC) derivative as a promising pseudocapacitive Li-ion hosting organic electrode. By inserting a polar methoxy group at the end of each peripheral aromatic ring of cHBC, the strong negative electrostatic potential near the oxygen atom enabled us to modulate the pseudocapacitive characteristics of the OCH3-cHBC electrode with enhanced specific capacity. Particularly, benefiting from the electron-donating group, a Li-ion capacitor (LIC) consisting of an OCH3-cHBC anode with a double-layer capacitor cathode could be readily fabricated. It exhibited reliable energy and power densities as well as an ultralong lifetime of over 13000 cycles without significant degradation. The promising electrochemical results enriched the strategic molecular approach of polycyclic aromatic hydrocarbons, altering the electrochemical energy storage systems and ensuring advanced LIC electrodes. English American Chemical Society Effects of Methoxy Substituents in Contorted Polycyclic Aromatic Hydrocarbons for Pseudocapacitive Charge Storage Article 10.1021/acsenergylett.2c01677 1 ACS Energy Letters, v.7, no.12, pp.4142 - 4149 ACS Energy Letters 7 12 4142 4149 N scie scopus 000894229600001 2-s2.0-85141534478 Chemistry, Physical Electrochemistry Energy & Fuels Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Science & Technology - Other Topics Materials Science Article ORGANIC ELECTRODE MATERIALS ION LI GRAPHENE ANODE CARBON DERIVATIVES CAPACITY CATHODE