A High Power Density Dual-electrolyte Lithium-Silver Battery with Celgard (R) 2325 Separator

作者：Zhang, Dong; Yan, Kang; Wu, Feng; Zhang, Cunzhong^*

来源：Electrochimica Acta, 2014, 116: 429-433.

DOI：10.1016/j.electacta.2013.11.051

• Lithium-silver battery
• Dual-electrolyte
• Celgard separator
• Impedance
• Power density

This paper presents a dual-electrolyte lithium-silver battery by using Celgard (R) to separate organic electrolyte and aqueous electrolyte. Such type of battery can output a maximum power density of 29.9 mW cm(-2) (or denoted as 915W kg(-1)), and can also deliver high energy density (650 Wh kg(-1)) at 1 mA cm(-2). The power density obtained is about 2 times higher than that of dual-electrolyte Li-air battery with the NASICON-type lithium-ion conducting solid electrolyte. The high power density performance is main attributed to the low area-specific impedance of Celgard (R) 2325 (5.6 Omega cm(-2)) which soaked in 1 M LiClO4 in PC/DMC. The infrared spectra results of fresh Celgard (R) 2325 sample and with above-mentioned organic electrolyte and aqueous electrolyte treatment, respectively, indicate that Celgard (R) 2325 is chemically stable in used electrolyte condition. In addition, the capacity utilization efficiency of the battery active materials is about 93%, indicating the Celgard (R) 2325 possesses obvious water-proof property at all of used discharge operation condition.

• 出版日期2014-1-10
• 单位北京理工大学