A Mechanism of Lithium Storage in Disordered Carbons

A Mechanism of Lithium Storage in Disordered Carbons

High-resolution electron microscopy and lithium-7 nuclear magnetic resonance measurements were carried out for a disordered carbon material, prepared by heat treatment of polyphenylene, in which lithium was stored electrochemically. The nuclear magnetic resonance spectrum suggests the existence of L...

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Veröffentlicht in:Science (American Association for the Advancement of Science) 1994-04, Vol.264 (5158), p.556-558
Hauptverfasser: Sato, Kenji, Noguchi, Minoru, Demachi, Atsushi, Oki, Naohiko, Endo, Morinobu
Format: Artikel
Sprache:eng
Schlagworte:
250903 - Energy Storage- Batteries- Materials, Components, & Auxiliaries
ALKALI METALS
AROMATICS
Carbon
Chemical equilibrium
Chemistry
Doping
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
Electrochemistry
Electrodes
Electrodes: preparations and properties
ELEMENTS
ENERGY DENSITY
ENERGY STORAGE
Exact sciences and technology
General and physical chemistry
Graphite
HEAT TREATMENTS
HYDROCARBONS
Ions
LITHIUM
Lithium (Metal)
Materials
METALS
Molecules
NMR
Nuclear magnetic resonance
ORGANIC COMPOUNDS
Other electrodes
POLYPHENYLS
Scientific imaging
Spectroscopy
Stoichiometry
STORAGE
Transmission electron microscopes
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Beschreibung
Zusammenfassung:High-resolution electron microscopy and lithium-7 nuclear magnetic resonance measurements were carried out for a disordered carbon material, prepared by heat treatment of polyphenylene, in which lithium was stored electrochemically. The nuclear magnetic resonance spectrum suggests the existence of Li$_2$ covalent molecules in the carbon material. This extra covalent site of lithium storage promises extraordinarily high energy density for secondary batteries.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.264.5158.556