P-doped g-C3N4 has been successfully synthesized using hexachlorocyclotriphosphazene, a low cost and environmentally benign compound, as phosphorus source, and guanidiniumhydrochloride as g-C3N4 precursor, via a thermally induced copolymerization route.
The structure of a TiAl3Hx complex for the formation of a TiAl3 binary phase that could play important roles in the reversible de-/hydrogenation of Ti-doped NaAlH4 has been identified on the basis of first principles density functional theory studies.
The facet-dependent performance has aroused great interest in the fields of catalyst, lithium ion battery and electrochemical sensor. In this study, the well-defined Co 3 O 4 cubes with exposed (001) plane and octahedrons with exposed (111) plane have been successfully synthesized and the facet-dependent electrocatalytic performance of Co 3 O 4 for rechargeable Li−O 2 battery has been comprehensively investigated by the combination of experiments and theoretical calculations. The Li−O 2 battery cathode catalyzed by Co 3 O 4 octahedron with exposed (111) plane shows much higher specific capacity, cycling performance, and rate capability than Co 3 O 4 cube with exposed (001) plane, which may be largely attributed to the richer Co 2+ and more active sites on (111) plane of Co 3 O 4 octahedrons. The DFT-based first-principles calculations further indicate that Co 3 O 4 (111) has a lower activation barrier of O 2 desorption in oxygen evolution reaction (OER) than Co 3 O 4 (001), which is very important to refresh active sites of catalyst and generate a better cyclic performance. Also, our calculations indicate that Co 3 O 4 (111) surface has a stronger absorption ability for Li 2 O 2 than Co 3 O 4 (001), which may be an explanation for a larger initial capacity in Co 3 O 4 (111) plane by experimental observation.
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.