掺钛(Ⅳ)电解二氧化锰的制备及其理化性能  

Preparation of Electrolytic Manganese Dioxide Samples Doped with Titanium(Ⅳ)and Their PhYsico-chemical Properties~*

作　　者：周遵亮[1] 张其昕[1] 

机构地区：[1]福建师范大学化学系

出　　处：《福建师范大学学报（自然科学版）》1990年第3期59-67,共9页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金

摘　　要：作者通过在MnSO_4-H_2SO_4电解液体系中,分别添加适量的三种不同钛化合物作添加剂,制备了掺钛(Ⅳ)电解二氧化锰(EMD-Ti),并测试了它们的部分理化特性。实验室碱性介质放电结果表明,EMD-Ti样品的放电容量有较大的提高。通过XRD分析发现,EMD-Ti样品的晶型仍属于γ型,但其晶格受到扭曲,b/a值增大,c/b值减小。XPS分析证明EMD-Ti样品中的钛以Ti(Ⅳ)离子形式存在。In this paper, the doped titanium(Ⅳ)electrolytic manganese dioxide samples are obtained by electrolyzing MnSO_4-H_2SO_4 solutions with three titanium compounds as additives, and then the physico-chemicai properties of these samples are determined. The results of laboratory cell discharging in alkaline solution show that discharge capacity of EMD-Ti samples is greatly improved. Examined by XRD, we find that EMD-Ti samples still belong to γ variety, but the original EMD lattice is twisted. The value of b/a is increased and that of c/b decreased. XPS analysis shows that titanium eXists in the EMD-Ti samples being in Ti(Ⅳ)state.

关 键 词：电解 二氧化锰 掺钛 制备 理化性能 

分 类 号：TQ137.12[化学工程—无机化工]