| 초록 |
Cellulose grafted with poly(acrylic acid) (PAA) and poly(ethylene glycol) (PEG) were synthesized by an atom transfer radical polymerization(ATRP) followed by a click reaction, which provides well defined polymeric binder for silicon based anode. Cellulose is the most abundant renewable materials and intrinsically greener and has excellent mechanical properties, which prevents from disintegration of silicon anode compared with that of conventional binder, PAA and carboxymethyl cellulose(CMC). PEG was grafted at the end of PAA chain to support Li ion diffusion, enhancing the ionic conductivity. The performance of Si anode with cellulose-PAA-PEG binder was evaluated by charge-discharge test, rate capability, and cycle retention. The fabricated cellulose binder incorporated with PAA and PEG showed the potential application for silicon anode in lithium-ion batteries. |
