Application of SiO/C composite anode material for lithium -ion batteries |
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Authors: | WU Minchang SHEN Long QIAO Yongmin ZHANG Jie |
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Affiliation: | Shanghai Shanshan Tech. Co., LTD, Shanghai 201209, China |
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Abstract: | Silicon-based anode materials have attracted a lot of interests due to their high specific capacities. In this paper, the SiOx & NG composite was measured as a high-capacity anode for lithium-ion batteries, and the effect of the SiO/C proportion on the energy density and cycle performance of full cell was investigated. The full cells with SiO/C composite in various proportions show different initial capacities and columbic efficiencies. Compared with natural graphite, SiO/C composites display a larger expansion. Moreover, the energy-density of full cell show an enhancement in a low SiO content but a gradual reduce with further increase of SiOx content, and the corresponding cycle performance of full cell decrease with the increasement of SiOx. When the proportion of SiOx is 4%, the energy density of full cell adds 1.2%, and the capacity retains over 80% after 500 cycles, which can satisfy the demands of commercial lithium ion batteries. |
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Keywords: | SiO/C composite anode materials cycling performance lithium ion batteries |
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