Silicon-Carbon Composite Electrode Materials Prepared by Pyrolysis of a Mixture of Manila Hemp, Silicon Powder, and Flake Artificial Graphite for Lithium Batteries

Qin Si, Daisuke Mori, Yasuo Takeda, Osamu Yamamoto and Nobuyuki Imanishi
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Qin Si: Graduate School of Engineering, Mie University, Tsu 514-8507, Japan
Daisuke Mori: Graduate School of Engineering, Mie University, Tsu 514-8507, Japan
Yasuo Takeda: Graduate School of Engineering, Mie University, Tsu 514-8507, Japan
Osamu Yamamoto: Graduate School of Engineering, Mie University, Tsu 514-8507, Japan
Nobuyuki Imanishi: Graduate School of Engineering, Mie University, Tsu 514-8507, Japan

Energies, 2017, vol. 10, issue 11, 1-9

Abstract: A high performance lithium anode is a key component for high energy density lithium batteries. Silicon based lithium anode materials are attractive for the lithium anode due to their high theoretical capacity. However, a severe problem is the huge volume change that occurs during cycling, resulting in a poor capacity retention. We have developed a silicon based anode that disperses silicon particles on a carbon paper made from Manila hemp. The composite silicon electrode materials showed a high initial coulombic efficiency of 83%. The initial capacity of 566 mAh g ?1 based on the total weight of the electrode was retained at 491 mAh g ?1 after 70 cycles at the charge and discharge rate of 100 mA g ?1 and at room temperature.

Keywords: lithium-ion battery; silicon anode; carbon paper; cyclic performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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