Boosting the Capacitive Performance of Cobalt(Ⅱ) Phthalocyanine by Non-peripheral Octamethyl Substitution for Supercapacitors
作者机构：School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbinHeilongjiang 150001China Deportment of ChemistrySouthern University of Science and TechnologyShenzhenGuangdong 518055China Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electricol Energy Materials and DevicesSouthern University of Science and TechnologyShenzhenGuangdong 518055China
出 版 物：《Chinese Journal of Chemistry》 (中国化学（英文版）)
年 卷 期：2021年第39卷第5期
页 面：1265-1272页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：the National Natural Science Foundation of China(No.21975116) the Guangdong-Hong Kong-Macao Joint Laboratory(No.2019B121205001) the Major Program of Guangdong Basic and Applied Research(No.2019B030302009)
主 题：Phthalocyanines Methylation Nanostructures Supercapacitors Electrochemistry
摘 要：In this paper,pristine cobalt(Ⅱ)phthalocyanine(CoPc)and non-peripheral octamethyl substituted CoPc(N-CoMe_(2)Pc)are the focus of electrochemical *** and N-CoMe_(2)Pc nanorods(NR)were synthesized by a facile precipitation process from sublimated bulk phthalocyanine powders and their electrochemical properties were *** to the large specific surface area,the capacitance performance of the nanorods was significantly higher than that of the sublimated powder sample.N-CoMe_(2)Pc powder exhibited better pseudocapacity compared with CoPc powder and CoPc NR,which is attributed to enhanced charge transfer rate and im-proved redox activity after the introduction of octamethyl substituents on phthalocyanine *** maximum specific capacitance value was achieved by N-CoMe_(2)Pc NR based electrode,exhibiting 210.2 F g^(-1) capacitance at 5 mV s^(-1) scan rate and 156.1 F g^(-1) at 0.25 A g^(-1) current density,and also showing high efficiency and satisfactory *** results indicate that according to proper molecular design,N-CoMe_(2)Pc NR could be applied as the potential candidate for electrode material in supercapacitors.
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