ANODIC CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY, LITHIUM SECONDARY BATTERY ANODE, LITHIUM SECONDARY BATTERY, AND METHOD FOR MANUFACTURING ANODIC CARBON MATERIAL FOR LITHIUM SECONDARY BATTERY
First Claim
1. An anodic carbon material for a lithium secondary battery, comprising:
- composite particles composed of silicon-containing particles containing an alloy, oxide, nitride, or carbide of silicon capable of occluding and releasing lithium ions and a resinous carbon material enclosing said silicon-containing particles; and
a network structure formed from nanofibers and/or nanotubes that bond to surfaces of said composite particles and that enclose said composite particles, and wherein;
said network structure contains silicon.
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Abstract
The invention provides an anodic carbon material for a lithium secondary battery and a lithium secondary battery anode having excellent charge/discharge cycle characteristics, and a lithium secondary battery using the same. More specifically, an anodic carbon material for a lithium secondary battery according to the present invention comprises: composite particles composed of silicon-containing particles containing an alloy, oxide, nitride, or carbide of silicon capable of occluding and releasing lithium ions and a resinous carbon material enclosing the silicon-containing particles; and a network structure formed from nanofibers and/or nanotubes that bond to surfaces of the composite particles and that enclose the composite particles, and wherein: the network structure contains silicon.
32 Citations
13 Claims
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1. An anodic carbon material for a lithium secondary battery, comprising:
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composite particles composed of silicon-containing particles containing an alloy, oxide, nitride, or carbide of silicon capable of occluding and releasing lithium ions and a resinous carbon material enclosing said silicon-containing particles; and a network structure formed from nanofibers and/or nanotubes that bond to surfaces of said composite particles and that enclose said composite particles, and wherein; said network structure contains silicon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for manufacturing an anodic carbon material for a lithium secondary battery, comprising:
- mixing silicon-containing particles containing an alloy, oxide, nitride, or carbide of silicon, capable of occluding and releasing lithium ions, into a carbon precursor, thereby forming a mixture with said silicon-containing particles dispersed in said carbon precursor; and
carbonizing said mixture.
- mixing silicon-containing particles containing an alloy, oxide, nitride, or carbide of silicon, capable of occluding and releasing lithium ions, into a carbon precursor, thereby forming a mixture with said silicon-containing particles dispersed in said carbon precursor; and
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13. A method for manufacturing an anodic carbon material for a lithium secondary battery, comprising:
- mixing silicon-containing particles containing an alloy, oxide, nitride, or carbide of silicon, capable of occluding and releasing lithium ions, into a carbon precursor together with a catalyst, thereby forming a mixture with said silicon-containing particles and said catalyst dispersed in said carbon precursor; and
carbonizing said mixture.
- mixing silicon-containing particles containing an alloy, oxide, nitride, or carbide of silicon, capable of occluding and releasing lithium ions, into a carbon precursor together with a catalyst, thereby forming a mixture with said silicon-containing particles and said catalyst dispersed in said carbon precursor; and
Specification