Hollow Core-Shell Structured Porous Si-C Nanocomposites for Li-Ion Battery Anodes
Journal Article
·
· Journal of Materials Chemistry
Hollow core-shell structured porous Si-C nanocomposites with void space up to tens of nanometers are designed to accommodate the volume expansion during lithiation for high-performance Li-ion battery anodes. An initial capacity of {approx}760 mAh/g after formation cycles (based on the entire electrode weight) with {approx}86% capacity retention over 100 cycles is achieved at a current density of 1 A/g. Good rate performance is also demonstrated.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1043106
- Report Number(s):
- PNNL-SA-85843; 42690; VT1201000
- Journal Information:
- Journal of Materials Chemistry, Journal Name: Journal of Materials Chemistry Journal Issue: 22 Vol. 22; ISSN JMACEP; ISSN 0959-9428
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANODES
CAPACITY
COMPOSITE MATERIALS
CURRENT DENSITY
Core-shell structured porous Si
ELECTRIC BATTERIES
ELECTRODES
Environmental Molecular Sciences Laboratory
LITHIUM IONS
PERFORMANCE
POROUS MATERIALS
RETENTION
SILICON CARBIDES
energy storage
pore size effect
volume expansion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANODES
CAPACITY
COMPOSITE MATERIALS
CURRENT DENSITY
Core-shell structured porous Si
ELECTRIC BATTERIES
ELECTRODES
Environmental Molecular Sciences Laboratory
LITHIUM IONS
PERFORMANCE
POROUS MATERIALS
RETENTION
SILICON CARBIDES
energy storage
pore size effect
volume expansion