Hydrothermally prepared binary metal hydroxide electrode with a rational design and an innovative structure for electrochemical capacitors

The development of highly effective electrodes with new structures and rational designs is a major challenge for materials researchers in the twenty-first century, as it will aid in the improvement of energy storage device efficiency. Materials having high conductivity, a large surface area, a large number of pores, a network structure, and good stability are usually considered to be suitable for practical usage in modern electrochemical capacitors (ECCs). The ever-increasing need for high-performance ECCs has prompted materials researchers to create and design a new class of materials with integrated features. We manufacture a new honeycomb-like Co/Ni-LDH material in this paper and deposit it directly onto carbon cloth (CC, Co/Ni-LDH@CC) through the hydrothermal process to develop the binder-free and flexible electrode for ECC applications. Chemical composition, texture, thermal stability, shape, surface area, and the nature of atomic and molecular interaction in the produced Co/Ni-LDH@CC sample were all investigated using EDX, PXRD, TGA, FESEM, BET, and TGA techniques, respectively. In terms of application, our self-supporting and flexible electrode has an outstanding gravimetric capacity (C_g) of 1916 F/g and a remarkable preservation of 96.6% at the end of 6000 testing cycles. Our integrated electrode, in addition, has a better rate capability, as shown by the fact that it retains 69.15% of capacitance even after a fifteen-fold rise in the applied current density. The Co/Ni-LDH electrode's excellent electrochemical activity is a result of its self-supporting design, higher electronic conduction, non-resistive current collector, larger surface area, network structure, and very porous bulk.