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发明授权
CN101645505B 高容量铁电极材料 有权 转让 许可

高容量铁电极材料
摘要：
本发明提供了一种高容量铁电极材料，其特征在于该铁电极材料由活性物质和添加剂组成。活性物质的成分是铁或铁的化合物，包括Fe3O4，Fe(OH)2，Fe(OH)3，Fe2O3，还原铁粉，羰基铁粉中的一种或几种；添加剂包括：1)含量为1-10％的稀土氧化物，稀土氧化物包括La2O3、CeO2、Nd2O3、Pr2O3、Y2O3、Gd2O3、Sm2O3等中的一种或几种，2)含量为1-3％的氢氧化亚镍或饱和硫酸镍溶液。这种铁电极材料的优点是：1)不用添加有毒的重金属(如Hg、Cd、Pb等)，是一种环保型的电极材料；2)不用添加贵金属(如In、Ga等)，电极成本很低；3)电极活性物质的容量超过400mAh/g。该材料用于制造高能量环保的铁镍电池。
摘要（英）：

The invention provides a high-capacity iron electrode material, which is characterized by consisting of an active matter and an additive. The active matter is iron or a compound of iron and comprises one or more of Fe3O4, Fe(OH)2, Fe(OH)3, Fe2O3, reduced iron powder, and carbonyl iron powder; and the additive comprises 1) 1 to 10 percent of rare earth oxides and 2) 1 to 3 percent of nickel hydroxide or saturated nickel sulfate solution, wherein the rare earth oxides comprise one or more of La2O3, CeO2, Nd2O3, Pr2O3, Y2O3, Gd2O3, Sm2O3 and the like. The iron electrode material has the advantages that: 1) poisonous heavy metals (such as Hg, Cd, Pb and the like) are not added, so that the iron electrode material is an environmental protection type electrode material; 2) precious metals (such as In, Ga and the like) are not added, so the cost of the iron electrode material is extremely low; and 3) the capacity of the active matter of the electrode exceeds 400mAh/g. The material is used for manufacturing high-energy environment-protecting iron-nickel batteries.

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