1,2,4,5-benzene-tetra-carboxylic acid and 2-methylimidazole bi-linker intercalated redox active copper organic framework for advanced battery-supercapacitor hybrids

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Vol. 941; p. 117505
• Main Authors: Zahir Iqbal, Muhammad, Waqas Khan, Muhammad, Shaheen, Misbah, Sharif, Shahzad, Mohammad Wabaidur, Saikh, Ansari, Mohd Zahid, Aftab, Sikandar
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.07.2023
• Subjects: Battery; Energy storage; mixed ligands MOF; MOFs; Supercapacitors; Supercapacitors; MOFs; mixed ligands MOF; Battery; Energy storage
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2023.117505

[Display omitted] •Copper intercalated bi-linker pyromellitic acid and 2-methylimidazole redox active organic framework is synthesized.•The formation of bi-linker copper MOF is confirmed via multiple structural characterizations.•The bi-linker copper MOF is tested in three-electrode assembly, and a hybrid supercapacitor is also fabricated.•The bi-linker copper MOF hybrid device displayed an excellent specific energy and power density of 52 Wh kg−1 and 4000 W kg−1, respectively.•Semi-empirical models provided further intuition into the performance of the hybrid device. Metal-organic frameworks (MOFs) are an attractive class of material that can certainly address the needs of today’s energy storage technologies and are seizing immense interest for numerous technological applications. MOFs are highly porous, and their structural pillars mainly comprise of a metal node and organic linker. With its intrinsic unique characteristics, MOFs’ properties such as its high surface area, porosity, morphology, and stability can be tailored as per desire. Herein, to the best of our knowledge, for the first time 1, 2, 4, 5-benzenetetracarboxylic acid (BTC) and 2-mthylimidazole (C4H6N2) bi-linker copper MOF (Cu-B-MI MOF) is being synthesized and implied to hybrid supercapacitor applications. The synthesized MOF with favorable pore dimensions and structure for ion intercalation is being characterized structurally, morphologically, elementally, and electrochemically. Following a thorough standard three-electrode electrochemical analysis, an asymmetric supercapacitor (Cu-B-MI MOF//activated carbon (AC)) is being fabricated which showcases a maximum specific energy and power density of 52 Wh kg−1 and 4000 W kg−1, respectively. The sublime outcomes of Cu-B-MI MOF elevate its competitiveness as cathode material for futuristic energy storage applications.