title: Interface chemistry engineering for stable cycling of reduced GO/SnO2 nanocomposites for lithium ion battery.
abstract: From the whole anode electrode of view, we report in this work a system-level strategy of fabrication of reduced graphene oxide (RGO)/SnO2 composite-based anode for lithium ion battery (LIB) to enhance the capacity and cyclic performance of SnO2-based electrode materials. RGO/SnO2 composite was first coated by a nanothick polydopamine (PD) layer and the PD-coated RGO/SnO2 composite was then cross-linked with poly(acrylic acid) (PAA) that was used as a binder to accomplish a whole anode electrode. The cross-link reaction between PAA and PD produced a robust network in the anode system to stabilize the whole anode during cycling. As a result, the designed anode exhibits an outstanding energy capacity up to 718 mAh/g at current density of 100 mA/g after 200 cycles and a good rate performance of 811, 700, 641, and 512 mAh/g at current density of 100, 250, 500, and 1000 mA/g, respectively. Fourier transform IR spectra confirm the formation of cross-link reaction and the stability of the robust network after long-term cycling. Our results indicate the importance of designing interfaces in anode system on achieving improved performance of electrode of LIBs.
authors.affiliation: i-LAB and Nano-bionics Division, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Dong
authors.initials: D
authors.lastname: Wang
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Dong
authors.forename: Fengxing
authors.initials: F
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Jin
mesh_terms: D011211:Electric Power Supplies; D006108:Graphite / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry; D010087:Oxides / Q000737:chemistry
chemical_list: D010087:Oxides; D006108:Graphite; D008094:Lithium