A dimensionally stable and fast-discharging graphite-silicon composite Li-ion battery anode enabled by electrostatically self-assembled multifunctional polymer-blend coating

A high-performance graphite-Si composite anode for Li-ion batteries containing Si nanoparticles (NPs) attached onto graphite microparticles was synthesized by adopting a polymer-blend of poly(diallyl dimethyl-ammonium chloride) and poly(sodium 4-styrenesulfonate). The polymer-blend enabled uniform d...

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Veröffentlicht in:	Chemical communications (Cambridge, England) England), 2015-05, Vol.51 (40), p.8429-8431
Hauptverfasser:	Li, Fu-Sheng, Wu, Yu-Shiang, Chou, Jackey, Wu, Nae-Lih
Format:	Artikel
Sprache:	eng
Schlagworte:	Anodes Chlorides Electrodes Graphite Lithium-ion batteries Microparticles Nanoparticles Silicon
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container_title	Chemical communications (Cambridge, England)
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creator	Li, Fu-Sheng Wu, Yu-Shiang Chou, Jackey Wu, Nae-Lih
description	A high-performance graphite-Si composite anode for Li-ion batteries containing Si nanoparticles (NPs) attached onto graphite microparticles was synthesized by adopting a polymer-blend of poly(diallyl dimethyl-ammonium chloride) and poly(sodium 4-styrenesulfonate). The polymer-blend enabled uniform distribution of Si NPs during synthesis and served as a robust artificial solid-electrolyte interphase that substantially enhanced the cycle stability and rate performance of the composite electrode. The electrode exhibited a specific capacity of 450 mA h g(-1), 96% capacity retention at a 10 C-rate, 95% retention after 200 cycles, and the same electrode expansion behavior as a pristine graphite electrode.
doi_str_mv	10.1039/c4cc09825k
format	Article
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source	Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects	Anodes Chlorides Electrodes Graphite Lithium-ion batteries Microparticles Nanoparticles Silicon
title	A dimensionally stable and fast-discharging graphite-silicon composite Li-ion battery anode enabled by electrostatically self-assembled multifunctional polymer-blend coating
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