Hydrogen Absorption over Li – Carbon Complexes

2002 ◽  
Vol 730 ◽  
Author(s):  
J.Z. Luo ◽  
P. Chen ◽  
Z.T. Xiong ◽  
K.L. Tan ◽  
J.Y. Lin
Keyword(s):  
Carbon Nanotubes ◽  
Low Temperature ◽  
Carbon Content ◽  
Reaction Temperature ◽  
Hydrogen Absorption ◽  
Specific Area ◽  
Intercalation Compounds ◽  
Lithium Metal ◽  
Remarkable Reduction

AbstractA remarkable reduction in reaction temperature was found for the hydrogenation of Li metal in Li-C mixture. H2 uptake started at 50°C, became vigorous at 150°C and slowed down at temperatures above 200°C. In-situ XRD characterizations revealed that Li-C intercalation compounds such as LiC6 and LiC12 existed in the Li-C samples, and LiH formed after the hydrogenation taking place. Increasing the carbon content in the Li-C mixture, from Li/C = 10:1 to 5:1 and then to 2:1, would enhance the reactivity of hydrogenation accordingly. Carbon nanotubes, with smaller size and larger specific area, showed even greater enhancement of the hydrogenation of lithium metal than graphite. The mechanism for the low temperature hydrogenation of Li-C samples was studied and discussed.

A novel method for synthesis of carbon nanotubes: Low temperature solid pyrolysis

1997 ◽  
Vol 12 (7) ◽  
pp. 1678-1680 ◽  
Author(s):  
Y. L. Li ◽  
Y. D. Yu ◽  
Y. Liang
Keyword(s):  
Carbon Nanotubes ◽  
Low Temperature ◽  
Arc Discharge ◽  
Graphite Furnace ◽  
Silicon Carbonitride ◽  
New Method ◽  
Synthesis Process ◽  
Novel Method ◽  
Synthesis Of Carbon Nanotubes

We report a novel method for the synthesis of carbon nanotubes: low temperature solid pyrolysis. By pyrolysis of hexamethyldisilazane-derived silicon carbonitride powders in a graphite furnace, we synthesized carbon nanotubes at 1400 °C. This new method has advantages of in situ growth of the carbon nanotubes, is stable in the synthesis process, and is technically simpler than conventional arc-discharge methods.

In situ low-temperature hydrothermal synthesis of LiMn2O4 nanocomposites based on graphene oxide/carbon nanotubes hydrogel and its capacities

2020 ◽  
Vol 35 (18) ◽  
pp. 2516-2527
Author(s):  
Kelei Wang ◽  
Lei Hua ◽  
Zhongbing Wang ◽  
Guanping Jin ◽  
Chunnian Chen
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Low Temperature

Abstract

Low Temperature Synthesis of Nano-Carbon Materials Using a Water-Soluble Catalyst Support by Chemical Vapor Deposition

2012 ◽  
Vol 490-495 ◽  
pp. 3311-3314
Author(s):  
Lei Shan Chen ◽  
Cun Jing Wang
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Low Temperature ◽  
Reaction Temperature ◽  
Carbon Materials ◽  
Chemical Vapor ◽  
Catalytic Decomposition ◽  
Water Soluble ◽  
Graphene Layers ◽  
Nano Carbon

Nano-carbon materials were synthesized by catalytic decomposition of acetylene at low temperature 400 °C and 420 °C using iron supported on sodium chloride as catalyst. The samples were examined by X-ray diffraction, scanning electron microscopy and high resolution transmission electron microscopy. The results show that nano onion-like fullerenes encapsulating Fe cores with diameters in the range 20-50 nm were obtained when the reaction temperature was 400 °C and there were no carbon nanotubes in the product. These onion-like fullerenes are composed of concentric graphene layers with an interlayer distance of 0.348 nm between the layers. When the reaction temperature was 420 °C, carbon nanotubes with a structure of rope and low graphitization degree were obtained.

Sign in / Sign up

Export Citation Format

Share Document