Preliminary study of alkaline single flowing Zn–O2 battery |
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| Authors: | Junqing Pan Lizhong Ji Yanzhi Sun Pingyu Wan Jie Cheng Yusheng Yang Maohong Fan |
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| Institution: | 1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. Research Institute of Chemical Defence, Beijing 100083, China;3. School of Energy Resources, University of Wyoming, Laramie, WY 82071, USA |
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| Abstract: | A new single flow alkaline battery, Zn–K2Zn(OH)]4–O2 battery, in which electrodeposited zinc is employed as an negative electrode and the oxygen in atmosphere as an high-capacity positive electrode active material is developed. The working process of the battery only depends on the circulation of a single electrolyte solution with assistance of a single pump and no cationic membrane is needed. The newly designed dual catalytical layers of composite oxygen electrode employs nano-structured Ni(OH)2 and the electrolytic manganese dioxide doped with NaBiO3 as two types of novel highly-efficient catalysts for oxygen evolution and reduction process, respectively. Cell (grade 1000 mAh) test results show that high efficiency is achieved with an average coulombic efficiency of 97.4% and an energy efficiency of 72.2% in 150 cycles. |
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