title: A dimensionally stable and fast-discharging graphite-silicon composite Li-ion battery anode enabled by electrostatically self-assembled multifunctional polymer-blend coating.
abstract: 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.
authors: Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan. nlw001@ntu.edu.tw.
authors: Fu-Sheng
authors: FS
authors: Li
authors: Yu-Shiang
authors: YS
authors: Wu
authors: Jackey
authors: J
authors: Chou
authors: Nae-Lih
authors: NL
authors: Wu