Si/C composite was prepared by ball milling and subsequent pyrolysis process using nanosilicon, flake graphite, and phenolic resin as raw materials. The effect of different binders on the performance of Si/C composite was investigated. XRD and FT-IR were used to characterize the structure of the binders, and SEM was used to characterize the morphology of the electrodes. The −1 electrochemical results showed that LA133 had the best performance; the initial charge capacity was 660.4 mAh g ,with a capacity retention of 92.9% after 50 cycles. Compared with PVDF and sodium alginate, better cycling performance was obtained using LA133 as binder of Si/C composite. . . . . Keywords Li-ion batteries Anode material Si/C composite Binder Electrochemical performance Introduction materials have attracted people’s attention because of their −1 high specific capacity (4200 mAh g ), environmental com- With the rapid development of battery markets, high-energy patibility, and low cost [9–11]. However, due to the large storage has attracted attention of scientists to satisfy the de- volume change (~ 300%) and low intrinsic conductivity dur- mands of portable electronics, electric vehicles, and energy- ing the alloying/dealloying process, the application of Si is efficient transportation [1–3]. Lithium-ion battery is in com- severely
Ionics – Springer Journals
Published: Jun 5, 2018
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