All-solid-state Al-air batteries with polymer alkaline gel electrolyte

作者：Zhang Zhao; Zuo Chuncheng; Liu Zihui; Yu Ying; Zuo Yuxin^*; Song Yu

来源：Journal of Power Sources, 2014, 251: 470-475.

DOI：10.1016/j.jpowsour.2013.11.020

• All-solid-state
• Al-air battery
• Polyacrylic acid
• Alkaline gel electrolyte
• Separation

Aluminum-air (Al-air) battery is one of the most promising candidates for next-generation energy storage systems because of its high capacity and energy density, and abundance. The polyacrylic acid (PAA)-based alkaline gel electrolyte is used in all-solid-state Al-air batteries instead of aqueous electrolytes to prevent leakage. The optimal gel electrolyte exhibits an ionic conductivity of 460 mS cm(-1), which is close to that of aqueous electrolytes. The Al-air battery peak capacity and energy density considering only Al can reach 1166 mAh g(-1)-Al and 1230 mWh (g-1)-Al, respectively, during constant current discharge. The battery prototype also exhibits a high power density of 91.13 mW cm(-2). For the battery is a laminated structure, area densities of 29.2 mAh cm-2 and 30.8 mWh cm(-2) are presented to appraise the performance of the whole cell. A novel design to inhibit anodic corrosion is proposed by separating the Al anode from the gel electrolyte when not in use, thereby effectively maintaining the available capacity of the battery.

• 出版日期2014-4-1
• 单位吉林大学