Core-shell-structured Co@Co4N nanoparticles encapsulated into MnO-modified porous N-doping carbon nanocubes as bifunctional catalysts for rechargeable Zn–air batteries

Constructing Bimetallic ZIF‐Derived Zn,Co‐Containing N‐Doped Porous Carbon Nanocube as the Lithiophilic Host to Stabilize Li Metal Anodes in Li−O2 Batteries

“…Interestingly, the surface amounts of N-6 + NÀ Q and NÀ Co in Zn/CoÀ N@PCN were higher than those for CoÀ N@CN, which could be beneficial to the nucleation process of metallic Li electrodeposition. [49] Moreover, the high-resolution Zn 2p XPS spectra shown in Figure 2f further confirm the Zn residue in Zn/CoÀ N@PCN. N 2 isothermal adsorption and desorption curves of CoÀ N@CN and Zn/CoÀ N@PCN were also carried out to measure their pore-related parameters.…”

Co@C,MnO-NAC via selective wrapping for effective oxygen electrocatalysis in rechargeable Zn–air batteries

“…2d). 43 In addition, there is an interesting phenomenon that Co nanoparticles were wrapped by a carbon shell while MnO nanoparticles existed on the surface of carbon layers. These special structural characteristics make Co and MnO work independently for catalyzing the ORR and OER, respectively.…”

Chemically Dual-Modified Biochar for the Effective Removal of Cr(VI) in Solution

“…In Figure 3 a, the graphite crystal plane diffraction peaks ((002) and (100)) were measured to be 23° and 43°, respectively, for both BC and KBC [ 23 ]. Notably, the remarkable diffraction peaks of Al 2 O 3 appeared at 18.71° (JCPDS: 88–1609) and 28.42° (JCPDS: 88–0107), and the peak situated at 40.49° is assigned to MnO [ 24 ]. Previous studies have found that the existence of metal oxides on the surface of biochar could enhance the removal capacity of anions via coordination reaction [ 25 ].…”