A Novel High-Performance Anode Material with an Enlarged Potential Window for a Hybrid Energy Storage System
Abdul Mateen,
Muhammad Zubair,
Muhammad Saleem,
Alexandra Golubenkova,
Leonid Voskressensky,
Asma A. Alothman,
Mohamed Ouladsmane,
Awais Ahmad,
Muhammad Sufyan Javed
Affiliations
Abdul Mateen
Department of Physics and Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing 100084, China
Muhammad Zubair
Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
Muhammad Saleem
Department of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
Alexandra Golubenkova
Department of Organic Chemistry, Faculty of Science, Peoples Friendship University of Russia (RUDN University), Miklukho Maklaya Str., 117198 Moscow, Russia
Leonid Voskressensky
Department of Organic Chemistry, Faculty of Science, Peoples Friendship University of Russia (RUDN University), Miklukho Maklaya Str., 117198 Moscow, Russia
Asma A. Alothman
Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
Mohamed Ouladsmane
Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
Awais Ahmad
Departamento de Quimica Organica, Universidad de Cordoba, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, E14014 Cordoba, Spain
Muhammad Sufyan Javed
School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
Cobalt-iron (CoFe) layered double hydroxides (LDHs) have received much interest for supercapacitors (SCs) because of their ion-insertable layer structure. However, there is still a need for more effort to increase their potential window and overall electrochemical energy storage capability as SC electrodes. In this work, we present a straightforward approach to synthesizing CoFe-LDHs on zinc oxide seeded carbon cloth (ZnO@CC) via a one-step hydrothermal reaction; the obtained electrode is denoted as CoFe-LDH@ZnO@CC. The electrochemical energy storage properties of CoFe-LDH@ZnO@CC are tested as an anode material using a three-electrode setup for SC applications in 1 M Na2SO4 electrolyte. It can operate in a wider potential window reaching up to 1.6 V, exceeding most previously reported anode materials. The CoFe-LDH@ZnO@CC displayed capacitive charge storage accounting for 76% of the total charge stored at 20 mV/s. The CoFe-LDH@ZnO@CC anode delivered a maximum capacitance of 299.8 F/g at 2 A/g, outstanding cycle stability, and retained 97.7% of the initial capacitance value for 5000 cycles at 16 A/g. This study introduces a new strategy for structurally designing electroactive materials for energy storage devices, which might be useful as an anode for SCs.
