title: Poly (acrylic acid sodium) grafted carboxymethyl cellulose as a high performance polymer binder for silicon anode in lithium ion batteries.
abstract: The design of novel binder systems is required for the high capacity silicon (Si) anodes which usually undergo huge volume change during the charge/discharge cycling. Here, we introduce a poly (acrylic acid sodium)-grafted-carboxymethyl cellulose (NaPAA-g-CMC) copolymer as an excellent binder for Si anode in lithium ion batteries (LIBs). The NaPAA-g-CMC copolymer was prepared via a free radical graft polymerization method by using CMC and acrylic acid as precursors. Unlike the linear, one-dimensional binders, the NaPAA-g-CMC copolymer binder is expected to present multi-point interaction with Si surface, resulting in enhanced binding ability with Si particles as well as with the copper (Cu) current collectors, and building a stable solid electrolyte interface (SEI) layer on the Si surface. The NaPAA-g-CMC based Si anode shows much better cycle stability and higher coulombic efficiency than those made with the well-known linear polymeric binders such as CMC and NaPPA.
authors.affiliation: Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Microelectronics and Nanoscience, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
authors.forename: Liangming
authors.initials: L
authors.lastname: Wei
authors.affiliation: Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Microelectronics and Nanoscience, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
authors.forename: Changxin
authors.initials: C
authors.lastname: Chen
authors.affiliation: Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Microelectronics and Nanoscience, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
authors.forename: Zhongyu
authors.initials: Z
authors.lastname: Hou
authors.affiliation: Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Microelectronics and Nanoscience, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wei