Dual-Carbon Battery Using High Concentration LiPF6 in Dimethyl Carbonate (DMC) Electrolyte. Issue 7 (13th April 2016)

• Record Type: Journal Article
• Authors: Miyoshi, Seiji; Nagano, Hiroki; Fukuda, Taro; Kurihara, Takuya; Watanabe, Motonori; Ida, Shintaro; Ishihara, Tatsumi
• Is Part Of: Journal of the Electrochemical Society. Volume 163:Issue 7(2016)
• Page Start: A1206
• Page End: A1213
• Publication Date: 2016-04-13
• Subjects: Carbon Neutral Energy -- Dual-Carbon Battery -- High-concentration Electrolyte -- LiPF6; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0381607jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : 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.