TY  - JOUR
AU  - Takagi, Hironori
AU  - Kakimoto, Koichi
AU  - Mori, Daishuke
AU  - Taminato, Sou
AU  - Takeda, Yashuo
AU  - yamamoto, osamu
AU  - Imanishi, Nobuyuki
PY  - 2021
DA  - 2021/02/24
TI  - High Energy Density Rechargeable Aqueous Lithium Batteries with an Aqueous Hydroquinone Sulfonic Acid and Benzoquinone Sulfonic Acid Redox Couple Cathode
JO  - Journal of Energy and Power Technology
SP  - 010
VL  - 03
IS  - 01
AB  - The demand for high energy density rechargeable batteries beyond lithium-ion batteries has increased for electric vehicles. In the present study, a novel high energy density rechargeable aqueous lithium battery was proposed. The battery was composed of a lithium metal anode, a lithium-stable non-aqueous electrolyte, a water-stable lithium-ion conducting solid electrolyte of Li1.4Al0.4Ge0.2Ti1.4(PO4)3-epoxy-TiO2 separator, and a hydroquinone sulfonic acid (HQS)/benzoquinone sulfonic acid (BQS) redox couple in an aqueous acetic acid solution (HAc). An open-circuit voltage of 3.7 V at 25 °C was recorded, and the theoretical energy density of the battery based on the reaction 2Li + BQS + 2H2O = 2 LiOH + HQS was 833 Whkg-1, about two times higher than that of the lithium-ion battery. The battery was successfully cycled at 0.5 mA cm-2 and 25 °C with low polarization.
SN  - 2690-1692
UR  - https://doi.org/10.21926/jept.2101010
DO  - 10.21926/jept.2101010
ID  - Takagi2021
ER  -