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Related Concept Videos

Network Covalent Solids02:18

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...

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Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material
10:53

Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

Published on: February 5, 2019

Graphene-network-backboned architectures for high-performance lithium storage.

Yongji Gong1, Shubin Yang, Zheng Liu

  • 1Department of Chemistry, Rice University, 6100 Main Street, Houston, TX 77005, USA.

Advanced Materials (Deerfield Beach, Fla.)
|June 15, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed graphene-network-backboned hybrid materials for high-performance lithium-ion batteries. These materials offer excellent capacity, rapid charging, and extended cycle life, advancing battery technology.

Keywords:
3D architecturesgrapheneiron oxidelithium storagemolybdenum disulfide

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10:23

Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies

Published on: November 5, 2015

Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Graphene-based hybrid architectures are promising for energy storage applications.
  • Developing materials with high surface area and stable structures is crucial for battery performance.

Purpose of the Study:

  • To fabricate graphene-network-backboned hybrid architectures using a hydrothermal method.
  • To investigate the electrochemical properties of MoS₂/graphene and FeOx/graphene for lithium-ion batteries.

Main Methods:

  • Hydrothermal synthesis of MoS₂/graphene and FeOx/graphene.
  • Characterization of material structure, surface area, and porosity.
  • Electrochemical testing for lithium-ion battery performance evaluation.

Main Results:

  • Achieved high specific surface area and porous structures with continuous graphene networks.
  • Demonstrated high reversible capacity (approx. 1100 mA h g⁻¹) for lithium-ion batteries.
  • Exhibited high-rate capabilities (full charge/discharge in 25-45 s) and long cycle life (1500 cycles).

Conclusions:

  • The fabricated graphene-network-backboned hybrid architectures show significant potential for advanced lithium-ion batteries.
  • The unique structural features contribute to superior electrochemical performance, including capacity, rate capability, and cycle stability.