High?Voltage Flexible Aqueous Zn?IonBattery with Extremely Low Dropout Voltage and Super?Flat Platfo

• 作 者: Zhe Chen Panpan Wang Zhenyuan Ji Hua Wang Jie Liu Jiaqi Wang Mengmeng Hu Yan Huang
• 机 构: State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 51805
• 出 处: 纳微快报（英文）
• 发表日期: 2020年6期
• 关键词: Flexible Aqueous zinc-ion battery High voltage Flat platform Rate capability

Flexible rechargeable aqueous zinc-ion batteries (ZIBs) have attracted extensive attentions in the energy storage field due to their high safety, environmental friendliness, and outstanding electro-chemical performance while the exploration of high-voltage aqueous ZIBs with excellent rate capability is still a great challenge for the further application them in flexible and wearable electronics. Herein, we fabricated a 2.4 V high-voltage flexible aqueous ZIB, being among the highest voltage reported in aqueous ZIBs. Moreover, it exhibits extremely flat charging/discharging voltage platforms and the dropout voltage is only 0.1 V, which is the smallest gap in all aqueous batteries to our best knowledge. Furthermore, the prepared ZIB performs high rate capability of 25 C and energy density of 120 Wh kg?1 and exhibitsexcellent safety under various destructive conditions including hammering, sewing, punching, and soaking. These extraordinary results indicate the great application potential of our high-voltage flexible aqueous ZIB in wearable electronics.