【作者】 吴红军；

【导师】 王宝辉； 陈颖；

【作者基本信息】 大庆石油学院 ， 化学工艺， 2004， 硕士

【摘要】 铁为自然界中的含量最为丰富的元素，通常以Fe（0）、Fe（Ⅱ）及Fe（Ⅲ）价态存在。如果Fe（Ⅵ）化合物作为电池的阴极材料时，其氧化反应为3电子过程，且反应产物为Fe₂O₃（铁锈），与一般传统碱性电池相比，它是一种高能，而且放电产物对环境无污染的绿色电池，目前，它的研究已成为电池研究领域的一个热点。由于采用Fe（Ⅵ）化合物为阴极材料的电池具有高能绿色特点，所以又称作高能超铁电池（"Super-Iron Battery”）。本文通过综述电池研究的进程和发展趋势，研究了高能超铁电池及其电化学性能。 采用改进的次氯酸盐氧化法（湿法），以工业级的原料，在实验室内，从1到4倍率规模合成高纯度、高收率的Fe（Ⅵ）化合物起始物——高铁酸钾，纯度可达98％、收率在80％以上；再以高铁酸钾为原料合成碱土金属Fe（Ⅵ）化合物或其他Fe（Ⅵ）复合物，其中碱土金属Fe（Ⅵ）化合物纯度可达94％以上。 利用亚铬酸盐氧化滴定法、分光光度法分析Fe（Ⅵ）化合物的纯度，并考察其稳定性与溶解性；借助原子吸收分光光度仪（AAS）、X-射线衍射仪（XRD）、傅立叶变换红外光谱仪（FTIR）对不同Fe（Ⅵ）化合物的结构特性作对比研究或表征。结果表明，实验所合成的Fe（Ⅵ）化合物纯度高，结晶性好。 采用各种Fe（Ⅵ）材料组装Super-Iron／ZnAAA型及钮扣型电池，具有高能特点，且其在高电流下放电，容量比碱锰电池高近1.5倍。更多还原

【Abstract】 Iron, an abundant element in nature, typically occurs in the valence states of Fe(0), Fe(II) and Fe(III). Due to their high oxidation, multiple electron transfer, and high intrinsic energy, we refer to the cells containing Fe(VI) compounds as " super-iron" batteries with more energy capacity compared to conventional alkaline batteries. The three charge reduction of Fe (VI) represents a high energy and capacity source of cathodes, and the products(ferric oxide) have been considered as an environmentally benign substance.This paper provides a review of advanced technology, application and updating progress of alkaline, lithium and super-iron batteries. Based on the electrochemistry, performance and growing history, high-energy super-iron batteries are systematically studied in this thesis.In the experiments, we aim at the study of preparations, analysis, characterization and electrochemistry of green super-iron batteries. The paper developed a novel method of preparation of potassium ferrate by hypochlorite oxidation, and determined the optimal parameters. The experimental results demonstrate that Fe(VI) compounds with high purity and yield can be prepared by raw technical materials. A variety of Fe(VI) cathode materials, synthesized by potassium ferrate and alkaline-earth metal salts, provide a high-energy electrochemical discharge.The characterization of Fe(VI) compounds was presented by chemical analysis (chromite), FTIR, UV, XRD. The results show high purity and perfect crystallation of as-synthsized Fe(VI) compounds.Effects of factors, cell compositions, electrolyte, active agent, modifer and conductor, on the cell electrochemical properties were investigated. The optimal parameters of electrochemical peformance of Fe(VI) compounds were exhibited by more 1.5-time energy and capacity of super-iron batteries compared to a standard one.更多还原