Korean Journal of Chemical Engineering, Vol.34, No.12, 3195-3199, 2017
Spherical graphene and Si nanoparticle composite particles for high-performance lithium batteries
Silicon/carbon composite electrodes are in the spotlight as an anode with a high capacity and a long cycle life. For this purpose, it is important to make a uniformly dispersed composite material. We fabricated spherical composite particles of reduced graphene oxide (rGO) and silicon nanoparticle (Si NP) using a spray drying method. The composite microparticle fabricated by drying the suspended droplets forms a well-agglomerated rGO/Si NP composite and forms a pore structure by crumpled rGO. The rGO/Si NP microparticles were applied as the anode of the lithiumion battery. We achieved a reversible capacity of 1,246 mAh/g at 1A/g after 200 charge/discharge cycles and a capacity retention of 83%. Considering that the Si NP microparticle without rGO showed a capacity of 365 mAh/g and a retention of 12%, the rGO matrix improves the electrical conductivity and effectively alleviates stress during charge and discharge cycles.
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[Cited By]
Lee SH, Lee JD, Korean Chemical Engineering Research , 56 (4), 561, 2018
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Jeong SY, Cho JS, Korean Chemical Engineering Research , 57 (4), 559, 2019
Lee WM, Kwon YC, Korean Chemical Engineering Research , 57 (5), 695, 2019
Chu CH, Lee WM, Kwon YC, Korean Chemical Engineering Research , 57 (6), 847, 2019
Lee SH, Lee JD, Korean Chemical Engineering Research , 58 (1), 142, 2020
Lee TH, Lee JD, Korean Chemical Engineering Research , 59 (4), 487, 2021
Lee TH, Lee JD, Korean Chemical Engineering Research , 60 (3), 446, 2022
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