Energetic iron(VI) chemistry: The super-iron battery

Energetic iron(VI) chemistry: The super-iron battery
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DOI:
10.1126/science.285.5430.1039
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发表时间:
1999-08-13
期刊:
影响因子:
56.9
通讯作者:
Ghosh, S
Ghosh, S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Licht, S;Wang, BH;Ghosh, S

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提出了基于不寻常的稳定铁(VI)化学的更高容量电池。碱性电池和金属氢化物电池的存储容量在很大程度上受到阴极限制,并且两者都使用氢氧化钾电解质。新电池与碱性和金属氢化物电池阳极兼容,但具有更高的阴极容量,并且基于可用的良性材料。铁(VI/III)阴极可以使用低溶解度的K2 FeO 4和BaFeO 4盐,其容量分别为406和313毫安时/克。与传统的碱性电池相比,超级铁电池具有50%的能量优势。具有铁(VI)阴极和金属氢化物阳极的电池显著(75%)可再充电。
Higher capacity batteries based on an unusual stabilized iron(VI) chemistry are presented. The storage capacities of alkaline and metal hydride batteries are largely cathode limited, and both use a potassium hydroxide electrolyte. The new batteries are compatible with the alkaline and metal hydride battery anodes but have higher cathode capacity and are based on available, benign materials. Iron(VI/III) cathodes can use low-solubility K2FeO4 and BaFeO4 salts with respective capacities of 406 and 313 milliampere-hours per gram. Super-iron batteries have a 50 percent energy advantage compared to conventional alkaline batteries. A cell with an iron(VI) cathode and a metal hydride anode is significantly (75 percent) rechargeable.