化学工程
材料科学
碳酸丙烯酯
碳纤维
二氧化碳
阴极
电化学
法拉第效率
作者
Seiji Miyoshi,Hiroki Nagano,Taro Fukuda,Takuya Kurihara,Motonori Watanabe,Shintaro Ida,Tatsumi Ishihara
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:2016-01-01
卷期号:163 (7): A1206-A1213
被引量:117
摘要
The effects of LiPF6 concentration in ethylene carbonate (EC)–dimethyl carbonate (DMC) on PF6− intercalation into graphitic carbon were studied for a high-energy-density dual-carbon battery. The capacity as well as potential for PF6− intercalation decreased with increasing LiPF6 concentration when EC–DMC was used as an electrolyte. Low-viscosity carbonate was found to be suitable as a high-concentration LiPF6 electrolyte, and DMC is thus a promising electrolyte for high-concentration LiPF6. The PF6− intercalation capacity as well as the intercalation potential in 3.7 M LiPF6/DMC (100 mAh g−1) were almost the same as those in 1 M LiPF6/EC–DMC (89 mAh g−1). Considering the anode capacity, 3.1 M LiPF6 is suitable for the full cell. Using 3.1 M LiPF6 in DMC, the energy density of the dual-carbon battery could be significantly increased.
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