Aqueous Lithium Rechargeable Battery with a Tin(II) Chloride Aqueous Cathode and a Water-Stable Lithium-Ion Conducting Solid Electrolyte. Issue 4 (1st January 2019)

• Record Type: Journal Article
• Authors: Watanabe, Shinya; Mori, Daisuke; Taminato, Sou; Matsuda, Yasuaki; Yamamoto, Osamu; Takeda, Yasuo; Imanishi, Nobuyuki
• Is Part Of: Journal of the Electrochemical Society. Volume 166:Issue 4(2019)
• Page Start: A539
• Page End: A545
• Publication Date: 2019-01-01
• Subjects: Batteries - aqueous -- Aqueous battery -- Lithium battery -- solid electrolyte; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0331904jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Electrical vehicles (EVs) have enjoyed extensive focus this decade as next-generation vehicles. However, high specific energy, high power density and low-cost batteries are essential for EVs to replace vehicles with internal combustion engines. Here, we propose a novel high specific energy and power density rechargeable aqueous lithium battery with an aqueous SnCl2 cathode and a lithium metal anode, where the lithium anode and the aqueous cathode are separated by a water-stable high lithium-ion conductivity solid electrolyte of Li1.4 Al0.4 Ge0.2 Ti1.4 (PO4 )3 . The theoretical specific energy density of this battery was 681 Wh kg −1, which is around 1.8 times higher than that of conventional lithium-ion batteries. The cell was successfully cycled at 1.5 mA cm −2 and 25°C for a specific areal capacity of 15 mAh cm −2 .