Design of novel self-assembled MXene and ZIF67 derivative composites as efficient electroactive material of energy storage device

Pin-Yan Lee; Tsai-Mu Cheng; Sibidou Yougbaré; Lu-Yin Lin

doi:10.1016/j.jcis.2022.03.092

Design of novel self-assembled MXene and ZIF67 derivative composites as efficient electroactive material of energy storage device

J Colloid Interface Sci. 2022 Jul 15:618:219-228. doi: 10.1016/j.jcis.2022.03.092. Epub 2022 Mar 23.

Authors

Pin-Yan Lee¹, Tsai-Mu Cheng², Sibidou Yougbaré³, Lu-Yin Lin⁴

Affiliations

¹ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan.
² Graduate Institute for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan; Taipei Heart Institute, Taipei Medical University, Taipei 11031, Taiwan. Electronic address: tmcheng@tmu.edu.tw.
³ Institut de Recherche en Sciences de la Santé (IRSS-DRCO), Nanoro, 03 B.P 7192, Ouagadougou 03, Burkina Faso.
⁴ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, Taiwan. Electronic address: lylin@ntut.edu.tw.

PMID: 35339958
DOI: 10.1016/j.jcis.2022.03.092

Abstract

High surface area and tunable pore size are beneficial for metal organic frameworks (MOFs) as electroactive material of energy storage devices. Novel ZIF67 derivative proposed in our previous work, nickel cobalt fluoride coupled with ammonia ions (NCNF), is synthesized using ammonia fluoride to solve poor electrical conductivity of MOFs. MXene is commonly incorporated in pseudo-capacitive materials to enhance electrical conductivity and energy storage ability. In this study, it is the first time to design MXene and NCNF composites (MXene/NCNF) with different MXene amounts via incorporating MXene in growing process of NCNF. MXene and NCNF are combined via self-assembly in a simple room temperature solution process. The optimized MXene/NCNF electrode shows a higher specific capacitance of 1020.0 F g^-1 (170.0 mAh g^-1) than that of NCNF electrode (574.2 F g^-1 and 95.7 mAh g^-1) at 20 mV s^-1, due to excellent surface properties of MXene/NCNF with conductive network of MXene and high electrocapacitive performance of NCNF. A symmetric energy storage device composed of the optimized MXene/NCNF electrodes presents outstanding cycling stability with Coulombic efficiency of 100% during whole cycling process and a high capacitance retention of 99% after 6000 cycles. Excellent electrochemical performance and simple synthesis of MXene/NCNF open new blueprints for designing novel electrocapacitive materials for electrochemical applications.

Keywords: Ammonia fluoride; Energy storage device; MXene; Metal organic framework; Solution process; ZIF67 derivative.