Dual-template synthesis of Co(OH)2 with mesoporous nanowire structure and its application in supercapacitor

Co(OH)2 Nanosheets Coupled With CNT Arrays Grown on Ni Mesh for High-Rate Asymmetric Supercapacitors with Excellent Capacitive Behavior

“…Among various pseudocapacitive electrode materials, cobalt-based materials such as cobalt oxides and hydroxides are attractive candidate for high performance supercapacitors because of their high electroactivity and large theoretical capacity [16][17][18]. Intensive researches have been carried out on cobalt/nickel-based materials, including Co(OH) 2 /graphene [19,20], Co 3 O 4 @MWCNT [21], NiO-Zn [22] …”

Formation of hierarchical CoMoO4@MnO2 core–shell nanosheet arrays on nickel foam with markedly enhanced pseudocapacitive properties

“…Therefore, it is urgent to design and synthesize electrode materials with high power and energy densities. In general, there are three types of electrode materials for supercapacitors: carboneous materials, transition-metal oxides and hydroxides, and conducting polymers [8,9]. Compared with conventional carbon materials, metal oxides can provide higher energy density for SCs due to their multiple oxidation states for reversible Faradaic reactions.…”

Electrochemical preparation and energy storage properties of nanoporous Co(OH)2 via pulse current deposition

“…This porous structure is highly desirable for enhanced electrochemical reaction kinetics in supercapacitors due to the large surface area, easy access to the electrolyte, and reduced mass and charge diffusion distances [11]. Although the electrodeposition of Co(OH) 2 has been extensively studied under different conditions through a variation of synthesis parameters such as applied current density and potential as well as bath concentration, pH, and temperature [12][13][14], the use of pulse current (PC) for the deposition of Co(OH) 2 has not been reported in the literature. The additional operating parameters of PC such as current-on time (T on ), current-off time (T off ), duty cycle (h), and frequency (f) offer a facile, direct, and effective way to further precisely control the morphology of the electrodeposited film.…”