期刊
ADVANCED ENERGY MATERIALS
卷 3, 期 12, 页码 1630-1635出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201300627
关键词
aqueous electrodes; batteries; electrochemistry; iodine; redox couples
类别
资金
- RIKEN Advanced Science Institute
A cathode-flow lithium-iodine (Li-I) battery is proposed operating by the triiodide/iodide (I-3(-)/I-) redox couple in aqueous solution. The aqueous Li-I battery has noticeably high energy density (approximate to 0.28 kWh kg(cell)(-1)) because of the considerable solubility of LiI in aqueous solution (approximate to 8.2 m) and reasonably high power density (approximate to 130 mW cm(-2) at a current rate of 60 mA cm(-2), 328 K). In the operation of cathode-flow mode, the Li-I battery attains high storage capacity (approximate to 90% of the theoretical capacity), Coulombic efficiency (100% +/- 1% in 2-20 cycles) and cyclic performance (>99% capacity retention for 20 cycles) up to total capacity of 100 mAh.
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