title: Engineered Si electrode nanoarchitecture: a scalable postfabrication treatment for the production of next-generation Li-ion batteries.
abstract: A novel, economical flash heat treatment of the fabricated silicon based electrodes is introduced to boost the performance and cycle capability of Li-ion batteries. The treatment reveals a high mass fraction of Si, improved interfacial contact, synergistic SiO2/C coating, and a conductive cellular network for improved conductivity, as well as flexibility for stress compensation. The enhanced electrodes achieve a first cycle efficiency of ∼84% and a maximum charge capacity of 3525 mA h g(-1), almost 84% of silicon's theoretical maximum. Further, a stable reversible charge capacity of 1150 mA h g(-1) at 1.2 A g(-1) can be achieved over 500 cycles. Thus, the flash heat treatment method introduces a promising avenue for the production of industrially viable, next-generation Li-ion batteries.
authors: Department of Chemical Engineering, University of Waterloo , Waterloo, Ontario N2L3G1, Canada.
authors: Fathy M
authors: FM
authors: Hassan
authors: Victor
authors: V
authors: Chabot
authors: Abdel Rahman
authors: AR
authors: Elsayed
authors: Xingcheng
authors: X
authors: Xiao
authors: Zhongwei
authors: Z
authors: Chen
mesh_terms: D011211:Electric Power Supplies; D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007477:Ions; D008094:Lithium / Q000737:chemistry*; D008839:Microelectrodes; D036103:Nanotechnology / Q000295:instrumentation*; D012825:Silicon / Q000737:chemistry*
chemical_list: D007477:Ions; D008094:Lithium; D012825:Silicon