The performance of pseudocapacitors usually depends largely on careful manipulation of nanoarchitectures and suitable composition of the active materials. Herein, NiTi layered double hydroxide (LDH) thin films with uniform density were synthesized by a process including two hydrothermal treatment steps and the composition of the hexagonal NiTi-LDH nanosheets was tunable in a relatively wide range. The obtained NiTi-LDH films on nickel foam show a high areal capacitance of 10.37 F cm À2 at 5 mA cm À2 , and good cycling stability (86% of its initial value was preserved after 1000 chargedischarge cycles), much better than b-Ni(OH) 2 and basic nickel hydroxides carbonate {Ni 2 (OH) 2 CO 3 $4H 2 O} films. It is indicated that NH 3 $H 2 O in the reaction solution played some important roles including enlarging the particle size, focusing the size distribution, and regulating the stacking modes of NiTi-LDH on nickel foam. This work demonstrated the importance of homogeneous dispersion of Ti atoms in layered nanostructures used in supercapacitors.
High-entropy oxides (HEOs), a class of compounds that include five or more elemental species, have gained increasing attractions for the capability of optimizing target properties. To date, even though some...
Amine-containing compounds including polymers, oligomers and small molecules, without conventional fluorophores, are found to emit strong visible fluorescence after a one-step heat treatment. Furthermore, our results demonstrate for the first time that not only tertiary amine groups but also primary and secondary amine groups can act as fluorescent moieties.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.