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Comparative Study of the Supercapacitive Performance of Three Ferrocene‐Based Structures: Targeted Design of a Conductive Ferrocene‐Functionalized Coordination Polymer as a Supercapacitor Electrode
Author(s) -
Miao Qian,
Rouhani Farzaneh,
MoghanniBavilOlyaei Hamed,
Liu KuanGuan,
Gao XueMei,
Li JingZhe,
Hu XiuDe,
Jin ZhiMin,
Hu MaoLin,
Morsali Ali
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202001109
Subject(s) - supercapacitor , capacitance , ferrocene , materials science , electrode , electrolyte , electrochemistry , nanotechnology , energy storage , power density , conductivity , chemical engineering , capacitor , chemistry , electrical engineering , voltage , power (physics) , physics , quantum mechanics , engineering
As redox‐active based supercapacitors are known as highly desirable next‐generation supercapacitor electrodes, the targeted design of two ferrocene‐functionalized (Fc(COOH) 2 ) clusters based on coinage metals, [(PPh 3 ) 2 AgO 2 CFcCO 2 Ag(PPh 3 ) 2 ] 2 ⋅ 7 CH 3 OH (SC 1 : super capacitor) and [(PPh 3 ) 3 CuO 2 CFcCO 2 Cu(PPh 3 ) 3 ] ⋅ 3 CH 3 OH (SC 2 ), is reported. Both structures are fully characterized by various techniques. The structures are utilized as energy storage electrode materials, giving 130 F g −1 and 210 F g −1 specific capacitance at 1.5 A g −1 in Na 2 SO 4 electrolyte, respectively. The obtained results show that the presence of Cu I instead of Ag I improves the supercapacitive performance of the cluster. Further, to improve the conductivity, the PSC 2 ([(PPh 3 ) 2 CuO 2 CFcCO 2 ] ∞ ), a polymeric structure of SC 2 , was synthesized and used as an energy storage electrode. PSC 2 displays high conductivity and gives 455 F g −1 capacitance at 3 A g −1 . The PSC 2 as a supercapacitor electrode presents a high power density (2416 W kg −1 ), high energy density (161 Wh kg −1 ), and long cycle life over 4000 cycles (93 %). These results could lead to the amplification of high‐performance supercapacitors in new areas to develop real applications and stimulate the use of the targeted design of coordination polymers without hybridization or compositions with additive materials.