TY - JOUR
T1 - Effect of Activated Carbon Addition on Electrochemical Performance of Li4Ti5O12/Nano Si Composite as Anode Material for LiB
AU - Annisa, N.
AU - Orlando, I.
AU - Faizah,
AU - Syahrial, A. Z.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/11/12
Y1 - 2019/11/12
N2 - Lithium titanate (Li4Ti5O12/LTO) is one of the materials being developed as an anode in Li-ion battery. LTO has zero-strain properties that do not volume change during charge and discharge, does not cause SEI, and can be used for the high rate. However, LTO has a weakness such as low electrical conductivity of 10-13 S/cm and low capacity of 175 mAh/g. Therefore, it needs to be combined with high-capacity materials such as silicon and materials that have high electrical conductivity such as carbon. In this study, the LTO-C/nano-Si composite was made to obtain an anode with high capacity and electrical conductivity. Carbon is added with a variation of 1, 3, and 5 wt% during the sol-gel process, while nano-Si is added by 10 wt% of the total active material ingredient in the slurry making. The carbon added is activated carbon which has previously been activated by using NaOH. Activated carbon is characterized by BET and SEM, while LTO-C/nano-Si composite was characterized by XRD and SEM. For the battery electrochemical performance, EIS, CV, and CD tests are performed. Activated carbon has a surface area of 490,007 m2/g. In this study, the optimum result achieved by the addition of 3% activated carbon (LTO-3%C/nano-Si) with 182.87 Ω resistivity and 17.14 mAh/g discharge capacity at 20C.
AB - Lithium titanate (Li4Ti5O12/LTO) is one of the materials being developed as an anode in Li-ion battery. LTO has zero-strain properties that do not volume change during charge and discharge, does not cause SEI, and can be used for the high rate. However, LTO has a weakness such as low electrical conductivity of 10-13 S/cm and low capacity of 175 mAh/g. Therefore, it needs to be combined with high-capacity materials such as silicon and materials that have high electrical conductivity such as carbon. In this study, the LTO-C/nano-Si composite was made to obtain an anode with high capacity and electrical conductivity. Carbon is added with a variation of 1, 3, and 5 wt% during the sol-gel process, while nano-Si is added by 10 wt% of the total active material ingredient in the slurry making. The carbon added is activated carbon which has previously been activated by using NaOH. Activated carbon is characterized by BET and SEM, while LTO-C/nano-Si composite was characterized by XRD and SEM. For the battery electrochemical performance, EIS, CV, and CD tests are performed. Activated carbon has a surface area of 490,007 m2/g. In this study, the optimum result achieved by the addition of 3% activated carbon (LTO-3%C/nano-Si) with 182.87 Ω resistivity and 17.14 mAh/g discharge capacity at 20C.
KW - Activated carbon
KW - Li-ion battery
KW - Litio
KW - Lto/nano si composites
KW - Nano si
UR - http://www.scopus.com/inward/record.url?scp=85076084799&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/553/1/012057
DO - 10.1088/1757-899X/553/1/012057
M3 - Conference article
AN - SCOPUS:85076084799
SN - 1757-8981
VL - 553
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012057
T2 - 19th International Union of Materials Research Societies - International Conference in Asia, IUMRS-ICA 2018
Y2 - 30 October 2018 through 2 November 2018
ER -