In situ encapsulation of core–shell-structured Co@Co₃O₄ into nitrogen-doped carbon polyhedra as a bifunctional catalyst for rechargeable Zn–air batteries

Abstract

Co@Co3O4@NC-900 is designed and used as a catalyst for bulk and flexible Zn–air batteries which display good electrochemical performance.

Direct growth of ordered N‐doped carbon nanotube arrays on carbon fiber cloth as a free‐standing and binder‐free air electrode for flexible quasi‐solid‐state rechargeable Zn‐Air batteries

“…27 According to the Raman spectroscopy, as shown in Figure 2B, three peaks below the wavenumbers of 800 cm −1 are observed, that is, 672, 514, and 465 cm −1 , which are attributed to the characteristic peaks of CoO. 11,33 The peaks at 1342 and 1594 cm −1 are attributed to the disordered and graphite carbon respectively, suggesting the presence of carbon in the samples. 18,34 The I D /I G ratio is an indication of the graphitization degree of the carbon.…”

Hard X-ray-based techniques for structural investigations of CO2 methanation catalysts prepared by MOF decomposition

“…12,[18][19][20] This gives access to an exceptional freedom to tune and optimize the properties of catalysts synthesized by this rather new strategy. The decomposition of metal-organic frameworks has already been used to create catalytically active nanoparticles, 21,22 electrode materials, 23,24 nanoporous carbon materials 25 and hybrid supercapacitors. 26 To our knowledge, energy-related applications of such materials have rarely been studied.…”

Fabrication of Macroporous Nafion Membrane from Silica Crystal for Ionic Polymer-Metal Composite Actuator

“…Figure 1 presents the typical preparation process for the macroporous Nafion film. First, monodispersed silica spheres were fabricated by the published method [8][9][10]. Second, the silica spheres (450 nm in diameter) in ethanol were organized them into close-packed arrays on the glass slide during the evaporation of ethanol at the room temperature for three days.…”