Metal–Organic Framework‐Derived Co3V2O8@CuV2O6 Hybrid Architecture as a Multifunctional Binder‐Free Electrode for Li‐Ion Batteries and Hybrid Supercapacitors

• Published in: Small (Weinheim an der Bergstrasse, Germany) Germany), 2020-12, Vol.16 (48), p.n/a
• Main Authors: Sekhar, S. Chandra, Ramulu, Bhimanaboina, Narsimulu, D., Arbaz, Shaik Junied, Yu, Jae Su
• Format: Article
• Language: English
• Subjects: Anodes; Bicycles; Charge transfer; Direct current; Electrochemical analysis; Electrode materials; Electronic components; Energy harvesting; Heat treatment; hybrid supercapacitors; Lithium-ion batteries; Li‐ion batteries; Metal foams; Metal oxides; Metal-organic frameworks; mixed metal vanadates; Nanorods; Nanotechnology; Porosity; Prisms; solution‐processing methods; Supercapacitors; Topology; Valence
• ISSN: 1613-6810; 1613-6829
• DOI: 10.1002/smll.202003983

Metal–organic frameworks (MOFs) are promising materials in diverse fields because of their constructive traits of varied structural topologies, high porosity, and high surface area. MOFs are also an ideal precursor/template to derive porous and functional morphologies. Herein, Co3V2O8 nanohexagonal prisms are grafted on CuV2O6 nanorod arrays (CuV‐CoV)‐grown copper foam (CF) using solution‐processing methods, followed by thermal treatment. Direct preparation of active material on CF can potentially eliminate electrochemically inactive and non‐conductive binders, leading to improved charge‐transfer rate. Furthermore, solution‐processing methods are simple and cost‐effective. Owing to versatile valence states and good redox activity, the vanadium‐incorporated mixed metal oxides (CuV‐CoV) exhibited superior electrochemical performance in lithium (Li)‐ion battery and supercapacitor (SC) studies. Furthermore, hollow carbon particles (HCPs) derived from MOF particles (MOF‐HCPs) are used as the anode material in SCs. A hybrid SC (HSC) fabricated with CuV‐CoV and MOF‐HCP materials exhibited noteworthy electrochemical properties. Moreover, a solid‐state HSC (SSHSC) is constructed and its real‐time feasibility is investigated by harvesting the dynamic energy of a bicycle with the help of a direct current generator. The charged SSHSCs potentially powered various electronic components. Metal–organic framework (MOF)‐derived cobalt vanadate porous nanoparticles are grafted on vertically grown copper vanadate architecture (Co3V2O8@CuV2O6) using simple solution‐processing methods. The Co3V2O8@CuV2O6 material demonstrates superior electrochemical performance in both lithium‐ion battery and supercapacitor (SC) studies. Moreover, MOF‐derived carbon serves as an anode in SC. A solid‐state SC fabricated with Co3V2O8@CuV2O6 and MOF‐derived carbon demonstrates good electrochemical response and real‐time applications as well.