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Self-assembly of porous-graphite/silicon/carbon composites for lithium-ion batteries

The self-assembly of porous-graphite/silicon/carbon composites is fabricated by electrostatic attraction in solvent and pyrolysis method. Silicon carries a positive charge after surface modification and porous-graphite carries a negative charge after oxidation. Transmission electron microscopy revea... Full description

Contained in: Powder Technology Vol. 254 (2014), p. 403-406
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Links: Additional Link (dx.doi.org)
Additional Keywords: ELEKTROSTATISCHE-ANZIEHUNG
ENTLADUNG
GRAPHIT
LITHIUM
LOESUNGSMITTEL
NANOPARTIKEL
OXIDATIONSREAKTION
POROESES-SILICIUM
PYROLYSE
ROENTGENBEUGUNG
SELBSTASSEMBLIERUNG
SILICON:POLYMER
TRANSMISSIONSELEKTRONENMIKROSKOPIE
VERBUNDWERKSTOFF
DOI: 10.1016/j.powtec.2014.01.051
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 4 Seiten, 24 Quellen
ID (e.g. DOI, URN): 10.1016/j.powtec.2014.01.051
PPN (Catalogue-ID): WTI053408381
Note: WTI TEMA DB
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520 |a The self-assembly of porous-graphite/silicon/carbon composites is fabricated by electrostatic attraction in solvent and pyrolysis method. Silicon carries a positive charge after surface modification and porous-graphite carries a negative charge after oxidation. Transmission electron microscopy reveals some Si nanoparticles encapsulated in pores of porous-graphite. X-ray diffraction shows that the structure of porous-graphite and silicon are not destroyed during oxidation of the graphite and surface modification of the silicon with APTES. Galvanostatic charge/discharge tests demonstrate that porous-graphite/silicon/carbon composites have much higher reversible charge capacity than flake graphite and better capacity retation than pristine silicon. The composites exhibit an initial reversible charge capacity of 778.8 mAh · g− 1. [Copyright Elsevier B.V. Reproduced with permission.] 
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