Towards High-voltage Aqueous Metal-ion Batteries Beyond1.5 V: The Zinc/Zinc hexacyanoferrate System
Rechargeable metal-ion batteries made from low-cost and abundant electrode materials operating in safe aqueous electrolytes are attractive for large-scale energy storage.Herein, a new kind of aqueous zinc-ion battery based on a zinc anode and a zinc hexacyanoferrrate cathode is demonstrated.Such a battery is built on two reversible electrochemical reactions: zinc deposition/dissolution at anode side and Zn2+ intercalation/extraction at cathode side.Its average operating voltage is as high as 1.7 V, to the best of our knowledge, which is the 2nd highest on record among rechargeable aqueous metal-ion batteries.As well, it can deliver a specific energy of 100 Wh kg-1 at a specific power of 0.1 KW kg-1 and a specific power of 1.7 KW kg-1 at a specific energy of 46 Wh kg-1.Moreover, such a battery exhibits good stability with capacity retention over 76% and 81% after 100 cycles at a rate of 1 C and 5 C,respectively.Hence, its excellent electrochemical properties combining with the low-cost active materials make it a viable alternative to commercial aqueous batteries for large-scale energy storage.
aqueous battery hexacyanoferrates energy storage cathode material zinc-ion battery
Liang Chen Leyuan Zhang Xufeng Zhou Zhaoping Liu
Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo315201, P.R.China
国内会议
宁波
英文
697-711
2014-11-11（万方平台首次上网日期，不代表论文的发表时间）