Abstract
To develop high capacity electrode materials for lithium-ion battery (LIB), dissimilar materials are mixed and, as a result, carbon nanofibers containing silicon (Si) nanoparticles and its components are successfully created by electrospinning method and some heat treatments. Tetraethoxysilane (TEOS) and Si nanoparticles are adopted as additives of carbon nanofibers because of their huge potential for obtaining high capacity. In this research, therefore, we develop TEOS/Si hybrid carbon nanofibers. Consequently, some samples obtain much higher charging/discharging capacity than the theoretical capacity for graphite (372 mAh/g, LiC6) even after second cycle.
Highlights
Lithium-ion batteries (LIBs) are widely used for many industrial products currently
The present study developed TEOS Carbon and TEOS/Si Hybrid Carbon, electrode materials for the anode of LIB
The cell, consisting of Ni mesh-based electrode made of TEOS Carbon, exhibited a bit higher capacity than the theoretical capacity for graphite
Summary
Lithium-ion batteries (LIBs) are widely used for many industrial products currently. The purpose of this research is to develop high capacity anode electrode materials for LIB. It is necessary to obtain much higher capacity than the theoretical capacity for graphite since much wider utilization of LIBs is expected in the future. For the achievement of this purpose, carbon nanofibers containing Si nanoparticles and its components are created. The alloy-type anode electrode material using Si has the largest charging/discharging capacity among the materials examined so far (4200 mAh/g), ≥10 times than that of graphite [1]. There are, some problems when Si is adopted as an anode material.
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