@article{Chandra Sekhar2019, 
author = {S. Chandra Sekhar and Goli Nagaraju and Bhimanaboina Ramulu and Sk. Khaja Hussain and D. Narsimulu and Jae Su Yu},
title = {Multifunctional core-shell-like nanoarchitectures for hybrid supercapacitors with high capacity and long-term cycling durability},
year = {2019},
journal = {Nano Research},
volume = {12},
number = {10},
pages = {2597-2608},
keywords = {copper hydroxide, layered double hydroxides, core-shell, hybrid supercapacitors, energy density, self-powered devices},
url = {https://www.sciopen.com/article/10.1007/s12274-019-2492-7},
doi = {10.1007/s12274-019-2492-7},
abstract = {Transition metal oxide/hydroxide with multifunctional hierarchical nanostructures has attracted widespread attention in supercapacitors (SCs) because of their large accessible surface area, high electrochemical activity and superior redox chemistry. Herein, core-shell-like copper (Cu) hydroxide nanotube arrays grafted nickel aluminum layered double hydroxide nanosheets were facilely synthesized on porous Cu foam (CH NTAs@NiAl LDH NSs) for use as an efficient battery-type electrode in hybrid SCs. With the synergistic effects of NiAl LDH NSs on well-adhered CH NTAs/CF, the core-shell-like composite (prepared for 24 h) delivered a maximum areal capacity of 334.3 µAh/cm2 at a current density of 3 mA/cm2 in 2 M KOH electrolyte, which is comparatively higher than other samples synthesized at different growth times. Moreover, the core-shell-like CH NTAs@NiAl LDH NSs-24 demonstrated an outstanding cycling stability of 134.3% after 10, 000 cycles. Utilizing high capacity and stability of CH NTAs@NiAl LDH NSs-24, a pouch-type hybrid SC was further assembled with core-shell-like composite as a positive electrode and reduced graphene oxide as a negative electrode with a filter paper as a separator in aqueous alkaline electrolyte. The hybrid SC showed a high areal capacity of 250 µAh/cm2 at 2 mA/cm2 with maximum areal energy and power densities of 181.9 µWh/cm2 and 24, 991.5 µW/cm2, respectively. Successfully harvesting the solar energy via solar cell panel and subsequently delivering the stored energy to switching and proximity applications also demonstrated the real-time applicability of our hybrid SCs.}
}