Carbonization/oxidation-mediated synthesis of MOF-derived hollow nanocages of ZnO/N-doped carbon interwoven by carbon nanotubes for lithium-ion battery anodes

Abstract

Partial carbonization/oxidation-mediated treatment of ZIF-8 precursors generates hollow nanocages of ZnO/N-doped carbon for high performance lithium-ion battery anodes.

Recent Developments of Two-Dimensional Anode Materials and Their Composites in Lithium-Ion Batteries

“…Therefore, many researchers improve the electrochemical performance of TMOs by adding auxiliary conductive materials. Moon et al 156 synthesized a complex composite of hollow nanostructures that consisted of CNTs and nitrogen-doped ZnO (CZO; Figure 6a,b). CNTs could enhance the electrical conductivity and mechanical stability.…”

“…Experiments of TMOs applied in LIBs: (a) Synthesis process and (b) EIS of ZnO/N-doped C/CNTs. Panels a and b reproduced with permission from ref . Copyright 2019 The Royal Society of Chemistry.…”

Controlled synthesis of solid-shelled non-spherical and faceted microbubbles

“…Hollow-structured materials have been extensively investigated for decades because of their intriguing physicochemical properties 1,2 including low specific density, 3 large surface area, 4 high loading capacity, 5 and shorter mass and charge transport lengths. 6 These unique properties make them potentially useful in a variety of applications 7 such as catalysis, 8,9 energy storage, [10][11][12] lightweight structures, 3,13 thermal insulating materials, 14 and biomedical devices. 15 For a given volume, hollow shell structures (e.g., capsules or bubbles) are typically spherical to minimise their surface area due to surface tension.…”

Hierarchical ZnO@Hybrid Carbon Core–Shell Nanowire Array on a Graphene Fiber Microelectrode for Ultrasensitive Detection of 2,4,6-Trinitrotoluene

“…However, graphene materials have a low adsorption capacity for nitroaromatic compounds, resulting in low sensitivity and an unsatisfactory detection limit. − Zinc oxide (ZnO) nanocrystals are promising materials that have been widely investigated in chemiresistive sensing systems for explosive detection − because TNT can be strongly chemisorbed by ZnO through the interactions of surface Zn atoms with O atoms of TNT . Unfortunately, the poor electrical conductivity and low electrochemical activity of ZnO seriously limit its application in detecting explosives. , Hybridizing ZnO nanocrystals with conductive carbon materials, such as graphene, carbon fiber, carbon nanotubes, and nitrogen (N)-doped carbon, has proved to be a cheap and effective approach to improve the sensing performance of ZnO. Such composite materials effectively exploit the structural merits of the individual components and increase the conductivity of ZnO nanocrystals, thus enhancing analytical performance.…”

“…11 Unfortunately, the poor electrical conductivity and low electrochemical activity of ZnO seriously limit its application in detecting explosives. 12,13 Hybridizing ZnO nanocrystals with conductive carbon materials, such as graphene, 13 carbon fiber, 14 carbon nanotubes, 15 and nitrogen (N)-doped carbon, 16 has proved to be a cheap and effective approach to improve the sensing performance of ZnO. Such composite materials effectively exploit the structural merits of the individual components and increase the conductivity of ZnO nanocryst- als, thus enhancing analytical performance.…”