Facial preparation of electrochemically stable NiO/ZnO hybrid electrode exhibiting excellent redox activity for enhanced glucose detection

Enhanced Energy Storage Performance through Controlled Composition and Synthesis of 3D Mixed Metal-Oxide Microspheres

“…To address these challenges, researchers have explored the formation of layered binary transition metal compounds (BTMCs) by combining transition metal compounds with other electrode materials known for exceptional electrical conductivity and high specific capacitance, such as Ni-Fe MOF [20], Ni/Co-MOF@aminated MXene [21] NiCo-MOF/MXene heterostructures [22], Ni-Cu nanocomposite-modified MXene [19], transition metal quantum dots@ graphene composite [23], and dual-metal MOF-derived Co-Ni/rGO [24]. These BTMC composites have shown remarkable results in supercapacitor applications, demonstrating enhanced energy density, capacitance retention, and stability after numerous cycles [24][25][26][27].…”

“…Additionally, they are electrochemically stable, cost-effective, and abundantly available in nature [25]. Moreover, when shaped into nanostructures such as nanoflowers, nanosheets, and nanoflakes, Co 2 O 3 exhibits further enhanced electrochemical properties [26]. Conversely, NiO shows great potential for energy storage applications due to its ideal band-edge potential for generating redox-active O 2 − and OH − radicals, which enhance active sites in electrochemical reactions [26].…”

“…Moreover, when shaped into nanostructures such as nanoflowers, nanosheets, and nanoflakes, Co 2 O 3 exhibits further enhanced electrochemical properties [26]. Conversely, NiO shows great potential for energy storage applications due to its ideal band-edge potential for generating redox-active O 2 − and OH − radicals, which enhance active sites in electrochemical reactions [26]. However, the sluggish electrochemical kinetics of NiO pose challenges for charge transfer, particularly due to slow ion storage kinetics and rapid volume changes during charging/discharging processes [37].…”

“…However, the sluggish electrochemical kinetics of NiO pose challenges for charge transfer, particularly due to slow ion storage kinetics and rapid volume changes during charging/discharging processes [37]. These challenges can be addressed by controlling crystal size and engineering NiO into three-dimensional (3D) architectures [26,38]. As crystal size affects surface area, crucial for electrochemical reactions.…”